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Ren G, Zhang X, Zhang J, Mu L, Xin X, Yun Y, Zhu A, Ge S. Effects of straw management and N levels on gross nitrogen transformations in fluvo-aquic soil of the North China Plain. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 944:173652. [PMID: 38825209 DOI: 10.1016/j.scitotenv.2024.173652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 05/03/2024] [Accepted: 05/28/2024] [Indexed: 06/04/2024]
Abstract
Straw incorporation with nitrogen (N) fertilization is crucial for enhancing soil fertility and minimizing negative environmental impacts by altering the magnitude and direction of soil N transformation processes. However, the response of soil N transformations to long-term carbon (C) and N inputs, and their primary driving factors, remain poorly understood. Thus, a 15N tracing study was conducted to investigate the effects of straw incorporation (AS) and straw removal (NS) with N levels of 0, 150 and 250 kg N ha-1 per season (N0, N150 and N250) on gross N transformation rates in the North China Plain after 6-year trial. Results indicated that at N0, AS significantly increased soil microbial immobilization of nitrate (NO3--N, INO3) and autotrophic nitrification rates (ONH4) compared to NS. With N fertilization, AS increased gross N immobilization (Itotal), ammonium-N immobilization (NH4+-N, INH4), net NH4+-N immobilization (InetNH4) and net NH4+-N absorption rates (AnetNH4). Specifically, at N150, AS significantly increased recalcitrant organic N mineralization rate (MNrec), while significantly reducing ONH4, labile organic N mineralization (MNlab), and gross N mineralization rates (Mtotal). At N250, AnetNH4, MNlab, MNrec and ONH4 under AS were significantly higher than under NS. Nitrogen application significantly increased ONH4, Itotal and INO3 under two straw management practices, and enhanced INH4 and InetNH4 under AS. Compared to N250, N150 significantly increased INH4 and InetNH4 under AS, while decreasing Mtotal. Opposite results were observed under NS. Meanwhile, NO3--N and dissolved organic carbon (DOC) were master factors controlling immobilization, total nitrogen (TN), hydrolysable NH4+-N (HNN) and stable organic N significantly affected AnetNH4, while labile organic N were the key environmental factors affecting MNrec, all of which positively influenced the rates of assimilation, mineralization and clay mineral adsorption. Overall, this study provides new insights into reducing N fertilization under straw incorporation by quantifying soil N transformation processes.
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Affiliation(s)
- Guocui Ren
- Fengqiu Agro-ecological Experimental Station, State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100049, China; University of Chinese Academy of Sciences, Nanjing 211135, China
| | - Xianfeng Zhang
- Fengqiu Agro-ecological Experimental Station, State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100049, China; University of Chinese Academy of Sciences, Nanjing 211135, China
| | - Jinbo Zhang
- School of Geography, Nanjing Normal University, Nanjing 210023, China
| | - Lan Mu
- Soil and Fertilizer Station of Henan Province, Zhengzhou 450002, China
| | - Xiuli Xin
- Fengqiu Agro-ecological Experimental Station, State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100049, China; University of Chinese Academy of Sciences, Nanjing 211135, China
| | - Yiming Yun
- Fengqiu Agro-ecological Experimental Station, State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100049, China; University of Chinese Academy of Sciences, Nanjing 211135, China
| | - Anning Zhu
- Fengqiu Agro-ecological Experimental Station, State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100049, China; University of Chinese Academy of Sciences, Nanjing 211135, China.
| | - Shuchun Ge
- Soil and Fertilizer Station of Henan Province, Zhengzhou 450002, China.
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2
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Chen C, Gong H, Wei Y, Xu T, Li J, Ding GC. Promoting agricultural waste-driven denitrification and nitrogen sequestration with nano-enabled strategy. BIORESOURCE TECHNOLOGY 2024; 401:130746. [PMID: 38679240 DOI: 10.1016/j.biortech.2024.130746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 04/25/2024] [Accepted: 04/25/2024] [Indexed: 05/01/2024]
Abstract
Nanotechnology and biotechnology offer promising avenues for bolstering food security through the facilitation of soil nitrogen (N) sequestration and the reduction of nitrate leaching. Nonetheless, a comprehensive and mechanistic evaluation of their effectiveness and safety remains unclear. In this study, a soil remediation strategy employing nano-Fe3O4 and straw in N-contaminated soil was developed to elucidate N retention mechanisms via diverse metagenomics techniques. The findings revealed that subsoil amended with straw, particularly in conjunction with nano-Fe3O4, significantly increased subsoil N content (53.2%) and decreased nitrate concentration (74.6%) in leachate. Furthermore, the enrichment of functional genes associated with N-cycling, sulfate, nitrate, and iron uptake, along with chemotaxis, and responses to environmental stimuli or microbial collaboration, effectively mitigates nitrate leaching while enhancing soil N sequestration. This study introduces a pioneering approach utilizing nanomaterials in soil remediation, thereby offering the potential for the cultivation of safe vegetables in high N input greenhouse agriculture.
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Affiliation(s)
- Chen Chen
- College of Resources and Environmental Science, State Key Laboratory of Nutrient Use and Management, China Agricultural University, Beijing 100193, China; National Observation and Research Station for Yangtze Estuarine Wetland Ecosystems, and Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Institute of Biodiversity Science, School of Life Sciences, Fudan University, Shanghai 200433, China
| | - Haiqing Gong
- College of Resources and Environmental Science, State Key Laboratory of Nutrient Use and Management, China Agricultural University, Beijing 100193, China
| | - Yuquan Wei
- College of Resources and Environmental Science, State Key Laboratory of Nutrient Use and Management, China Agricultural University, Beijing 100193, China; Organic Recycling Institute (Suzhou) of China Agricultural University, Wuzhong District, Jiangsu Province 215128, China
| | - Ting Xu
- College of Resources and Environmental Science, State Key Laboratory of Nutrient Use and Management, China Agricultural University, Beijing 100193, China; Organic Recycling Institute (Suzhou) of China Agricultural University, Wuzhong District, Jiangsu Province 215128, China
| | - Ji Li
- College of Resources and Environmental Science, State Key Laboratory of Nutrient Use and Management, China Agricultural University, Beijing 100193, China; Organic Recycling Institute (Suzhou) of China Agricultural University, Wuzhong District, Jiangsu Province 215128, China
| | - Guo-Chun Ding
- College of Resources and Environmental Science, State Key Laboratory of Nutrient Use and Management, China Agricultural University, Beijing 100193, China; Organic Recycling Institute (Suzhou) of China Agricultural University, Wuzhong District, Jiangsu Province 215128, China.
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3
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Li H, Song X, Wu D, Wei D, Li Y, Ju X. Partial substitution of manure increases N 2O emissions in the alkaline soil but not acidic soils. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 359:120993. [PMID: 38688131 DOI: 10.1016/j.jenvman.2024.120993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 04/14/2024] [Accepted: 04/20/2024] [Indexed: 05/02/2024]
Abstract
The fertilization regimes of combining manure with synthetic fertilizer are benefits for crop yields and soil fertility in cropping systems as compared to sole synthetic fertilization, but the responses of nitrous oxide (N2O) emissions to these practices are inconsistent in the literatures. We hypothesized that it is caused by different proportions of nitrogen (N) applied as manure and various soil properties. Here, we conducted a microcosm experiment, and measured the N2O emissions from control (no N) and five manure substitution treatments (supplied 100 mg N kg-1 using the combination of urea with manure) with a range of proportions of N applied as manure (0, 25%, 50%, 75%, and 100%) in three different soil types (fluvo-aquic soil, black soil, and latosol) under aerobic condition. The stimulated effect on N2O emissions was more pronounced after manure application in an alkaline soil with high nitrification rate, due to relatively rapid soil DOC depletion and N mineralization of manure. N2O emissions from partial substitution of urea with manure were significantly higher than manure-only addition under high soil pH due to abundant labile C from manure. However, there was no difference between manure substitution treatments under acid soils. Nitrification inhibitor substantially decreased N2O emissions with increasing soil pH, but it was less effective in mitigating N2O emissions with larger proportion of manure. This is likely due to the slow nitrification under low soil pH, and denitrification derived N2O increased with increasing manure application rate. Collectively, our study shows that the application of manure substitution to alkaline soils requires careful consideration, which might have rapid nitrification potential and hence trigger significant N2O emissions. The knowledge gained in this work will help the decision-makers in optimizing a sound N fertilization regime interacted with soil properties for sustainable crop production and N2O mitigation.
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Affiliation(s)
- Haoruo Li
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, the Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China; College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China
| | - Xiaotong Song
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Di Wu
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, Liaoning, 110016, China
| | - Dan Wei
- Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agricultural and Forestry Sciences, Beijing, 100097, China
| | - Yuyi Li
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, the Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Xiaotang Ju
- School of Tropical Agriculture and Forestry, Hainan University, Haikou, 570228, China.
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4
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Farooqi ZUR, Qadir AA, Alserae H, Raza A, Mohy-Ud-Din W. Organic amendment-mediated reclamation and build-up of soil microbial diversity in salt-affected soils: fostering soil biota for shaping rhizosphere to enhance soil health and crop productivity. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:109889-109920. [PMID: 37792186 DOI: 10.1007/s11356-023-30143-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Accepted: 09/25/2023] [Indexed: 10/05/2023]
Abstract
Soil salinization is a serious environmental problem that affects agricultural productivity and sustainability worldwide. Organic amendments have been considered a practical approach for reclaiming salt-affected soils. In addition to improving soil physical and chemical properties, organic amendments have been found to promote the build-up of new halotolerant bacterial species and microbial diversity, which plays a critical role in maintaining soil health, carbon dynamics, crop productivity, and ecosystem functioning. Many reported studies have indicated the development of soil microbial diversity in organic amendments amended soil. But they have reported only the development of microbial diversity and their identification. This review article provides a comprehensive summary of the current knowledge on the use of different organic amendments for the reclamation of salt-affected soils, focusing on their effects on soil properties, microbial processes and species, development of soil microbial diversity, and microbial processes to tolerate salinity levels and their strategies to cope with it. It also discusses the factors affecting the microbial species developments, adaptation and survival, and carbon dynamics. This review is based on the concept of whether addition of specific organic amendment can promote specific halotolerant microbe species, and if it is, then which amendment is responsible for each microbial species' development and factors responsible for their survival in saline environments.
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Affiliation(s)
- Zia Ur Rahman Farooqi
- Institute of Soil and Environmental Sciences, University of Agriculture Faisalabad, Faisalabad, 38040, Pakistan.
| | - Ayesha Abdul Qadir
- Institute of Soil and Environmental Sciences, University of Agriculture Faisalabad, Faisalabad, 38040, Pakistan
| | - Hussein Alserae
- Department of Soil Sciences and Water Resources, College of Agricultural Engineering Science, Baghdad University, Baghdad, Iraq
| | - Ali Raza
- Institute of Soil and Environmental Sciences, University of Agriculture Faisalabad, Faisalabad, 38040, Pakistan
| | - Waqas Mohy-Ud-Din
- Institute of Soil and Environmental Sciences, University of Agriculture Faisalabad, Faisalabad, 38040, Pakistan
- Department of Soil and Environmental Sciences, Ghazi University, Dera Ghazi Khan, 32200, Pakistan
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5
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Chen Y, Li W, Bu H, Yin W, Li P, Fang Z, Wu J. Enhanced Cd(II) immobilization in sediment with zero-valent iron induced by hydrogenotrophic denitrification. JOURNAL OF HAZARDOUS MATERIALS 2023; 441:129833. [PMID: 36084458 DOI: 10.1016/j.jhazmat.2022.129833] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 08/02/2022] [Accepted: 08/21/2022] [Indexed: 06/15/2023]
Abstract
In this study, an integrated system of Fe0 and hydrogenotrophic microbes mediated by nitrate (nitrate-mediated bio-Fe0, NMB-Fe0) was established to remediate Cd(II)-contaminated sediment. Solid phase characterization confirmed that aqueous Cd(II) (Cd(II)aq) was successfully immobilized and enriched on iron surface due to promoted iron corrosion driven by hydrogenotrophic denitrification and subsequent greater biomineral production such as magnetite, lepidocrocite and green rust. Compared to a Cd(II)aq removal of 21.1% in overlying water of the nitrate-mediated Fe0 (NM-Fe0) system, the NMB-Fe0 system obtained a much higher Cd(II)aq removal of 83.1% after 7 d remediation. The leaching test and sequential extraction results also showed that the leachability of Cd(II) decreased by 75.9% while the residual fraction of Cd(II) increased by 185.7% in comparison with untreated sediment. Besides, the Cd(II)aq removal raised with the increase of nitrate concentration and Fe0 dosage, further revealing the promotion effect of nitrate on Cd(II) removal by bio-Fe0. This study highlighted the involvement of bio-denitrification in the remediation of Cd(II)-contaminated sediment by Fe0 and provided a new insight to enhance its reactivity and applicability for Cd(II) immobilization.
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Affiliation(s)
- Ying Chen
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Weiquan Li
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Huaitian Bu
- SINTEF Industry, Department of Materials and Nanotechnology, Forskningsveien 1, 0373 Oslo, Norway
| | - Weizhao Yin
- School of Environment, Jinan University, Guangzhou 510632, China
| | - Ping Li
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Zhanqiang Fang
- School of Environment, South China Normal University, Guangzhou 510006, China
| | - Jinhua Wu
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China; The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou 510006, China; The Key Laboratory of Environmental Protection and Eco-Remediation of Guangdong Regular Higher Education Institutions, Guangzhou 510006, China.
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6
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Elrys AS, Uwiragiye Y, Zhang Y, Abdel-Fattah MK, Chen ZX, Zhang HM, Meng L, Wang J, Zhu TB, Cheng Y, Zhang JB, Cai ZC, Chang SX, Müller C. Expanding agroforestry can increase nitrate retention and mitigate the global impact of a leaky nitrogen cycle in croplands. NATURE FOOD 2023; 4:109-121. [PMID: 37118576 PMCID: PMC10154242 DOI: 10.1038/s43016-022-00657-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 11/02/2022] [Indexed: 12/29/2022]
Abstract
The internal soil nitrogen (N) cycle supplies N to plants and microorganisms but may induce N pollution in the environment. Understanding the variability of gross N cycling rates resulting from the global spatial heterogeneity of climatic and edaphic variables is essential for estimating the potential risk of N loss. Here we compiled 4,032 observations from 398 published 15N pool dilution and tracing studies to analyse the interactions between soil internal potential N cycling and environmental effects. We observed that the global potential N cycle changes from a conservative cycle in forests to a less conservative one in grasslands and a leaky one in croplands. Structural equation modelling revealed that soil properties (soil pH, total N and carbon-to-N ratio) were more important than the climate factors in shaping the internal potential N cycle, but different patterns in the potential N cycle of terrestrial ecosystems across climatic zones were also determined. The high spatial variations in the global soil potential N cycle suggest that shifting cropland systems towards agroforestry systems can be a solution to improve N conservation.
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Affiliation(s)
- Ahmed S Elrys
- School of Geography, Nanjing Normal University, Nanjing, China
- College of Tropical Crops, Hainan University, Haikou, China
- Soil Science Department, Faculty of Agriculture, Zagazig University, Zagazig, Egypt
| | - Yves Uwiragiye
- College of Natural Resources and Environment, Northwest A&F University, Yangling, China
- Department of Agriculture, Faculty of Agriculture, Environmental Management and Renewable Energy, University of Technology and Arts of Byumba, Byumba, Rwanda
| | - Yanhui Zhang
- School of Geography, Nanjing Normal University, Nanjing, China
| | | | - Zhao-Xiong Chen
- School of Geography, Nanjing Normal University, Nanjing, China
| | - Hui-Min Zhang
- School of Geography, Nanjing Normal University, Nanjing, China
| | - Lei Meng
- College of Tropical Crops, Hainan University, Haikou, China
| | - Jing Wang
- Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, China
| | - Tong-Bin Zhu
- Key Laboratory of Karst Dynamics, MLR & Guangxi, Institute of Karst Geology, Chinese Academy of Geological Sciences, Guilin, China
| | - Yi Cheng
- School of Geography, Nanjing Normal University, Nanjing, China.
- Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, China.
- Key Laboratory of Virtual Geographic Environment (Nanjing Normal University), Ministry of Education, Nanjing, China.
| | - Jin-Bo Zhang
- School of Geography, Nanjing Normal University, Nanjing, China
| | - Zu-Cong Cai
- School of Geography, Nanjing Normal University, Nanjing, China
| | - Scott X Chang
- Department of Renewable Resources, University of Alberta, Edmonton, Alberta, Canada
| | - Christoph Müller
- Institute of Plant Ecology, Justus Liebig University Giessen, Giessen, Germany
- School of Biology and Environmental Science and Earth Institute, University College Dublin, Dublin, Ireland
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7
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Cui H, Yang Y, Zhang X, Dong L, Yang Y, Huang M, He Y, Lu X, Zhen G. Nitrogen removal and microbial mechanisms in a novel tubular bioreactor-enhanced floating treatment wetland for the treatment of high nitrate river water. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2022; 94:e10767. [PMID: 35941098 DOI: 10.1002/wer.10767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 06/20/2022] [Accepted: 07/01/2022] [Indexed: 06/15/2023]
Abstract
A novel tubular bioreactor-enhanced floating treatment wetland (TB-EFTW) was developed for the in situ treatment of high nitrate river water. When compared with the enhanced floating treatment wetland (EFTW), the TB-EFTW system achieved 30% higher total nitrogen removal efficiency. Further, the average TN level of the TB-EFTW effluent was below the Grade IV requirement (1.5 mg/L) specified in Chinese standard (GB3838-2002). Microbial analysis revealed that both aerobic and anoxic denitrifying bacteria coexisted in the new system. The relative abundance of aerobic and anoxic denitrifiers were 42.69% and 22% at the middle and end of the tubular bioreactor (TB), respectively. It is reasonable to assume that effective nitrogen removal can mainly be attributed to the addition of solid carbon source and the spatial difference in DO distribution (oxic-anoxic areas in sequence) inside the TB. The initial investment cost and operating costs associated with the TB-EFTW system are approximately 14,000 and 3500 yuan per 1000 m3 river water, respectively. Considering its low cost, minimal maintenance requirements, and effective nitrogen removal, this newly developed system can be regarded as a promising technology for treating high nitrate river water. PRACTITIONER POINTS: A novel TB-EFTW system was developed to upgrade traditional in situ treatment techniques. The TB-EFTW could achieve 30% higher nitrogen removal efficiency than EFTWs. Both aerobic and anoxic denitrifying bacteria coexisted in the system. The system shows better technical and economic performance compared with routine techniques.
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Affiliation(s)
- He Cui
- Shanghai Municipal Engineering Design Institute (Group) Co., Ltd., Shanghai, China
| | - Yinchuan Yang
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, China
| | - Xin Zhang
- Shanghai Municipal Engineering Design Institute (Group) Co., Ltd., Shanghai, China
| | - Lei Dong
- Shanghai Municipal Engineering Design Institute (Group) Co., Ltd., Shanghai, China
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, China
| | - Yifeng Yang
- Shanghai Municipal Engineering Design Institute (Group) Co., Ltd., Shanghai, China
| | - Minsheng Huang
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, China
| | - Yan He
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, China
| | - Xueqin Lu
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, China
- Institute of Eco-Chongming (IEC), Shanghai, China
| | - Guangyin Zhen
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, China
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai, China
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8
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Stuchiner ER, von Fischer JC. Using isotope pool dilution to understand how organic carbon additions affect N 2 O consumption in diverse soils. GLOBAL CHANGE BIOLOGY 2022; 28:4163-4179. [PMID: 35377524 PMCID: PMC9321687 DOI: 10.1111/gcb.16190] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Revised: 02/24/2022] [Accepted: 03/24/2022] [Indexed: 06/14/2023]
Abstract
Nitrous oxide (N2 O) is a formidable greenhouse gas with a warming potential ~300× greater than CO2 . However, its emissions to the atmosphere have gone largely unchecked because the microbial and environmental controls governing N2 O emissions have proven difficult to manage. The microbial process N2 O consumption is the only know biotic pathway to remove N2 O from soil pores and therefore reduce N2 O emissions. Consequently, manipulating soils to increase N2 O consumption by organic carbon (OC) additions has steadily gained interest. However, the response of N2 O emissions to different OC additions are inconsistent, and it is unclear if lower N2 O emissions are due to increased consumption, decreased production, or both. Simplified and systematic studies are needed to evaluate the efficacy of different OC additions on N2 O consumption. We aimed to manipulate N2 O consumption by amending soils with OC compounds (succinate, acetate, propionate) more directly available to denitrifiers. We hypothesized that N2 O consumption is OC-limited and predicted these denitrifier-targeted additions would lead to enhanced N2 O consumption and increased nosZ gene abundance. We incubated diverse soils in the laboratory and performed a 15 N2 O isotope pool dilution assay to disentangle microbial N2 O emissions from consumption using laser-based spectroscopy. We found that amending soils with OC increased gross N2 O consumption in six of eight soils tested. Furthermore, three of eight soils showed Increased N2 O Consumption and Decreased N2 O Emissions (ICDE), a phenomenon we introduce in this study as an N2 O management ideal. All three ICDE soils had low soil OC content, suggesting ICDE is a response to relaxed C-limitation wherein C additions promote soil anoxia, consequently stimulating the reduction of N2 O via denitrification. We suggest, generally, OC additions to low OC soils will reduce N2 O emissions via ICDE. Future studies should prioritize methodical assessment of different, specific, OC-additions to determine which additions show ICDE in different soils.
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Affiliation(s)
- Emily R. Stuchiner
- Graduate Degree Program in EcologyColorado State UniversityFort CollinsColoradoUSA
- Department of BiologyColorado State UniversityFort CollinsColoradoUSA
| | - Joseph C. von Fischer
- Graduate Degree Program in EcologyColorado State UniversityFort CollinsColoradoUSA
- Department of BiologyColorado State UniversityFort CollinsColoradoUSA
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9
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Elrys AS, Chen Z, Wang J, Uwiragiye Y, Helmy AM, Desoky ESM, Cheng Y, Zhang JB, Cai ZC, Müller C. Global patterns of soil gross immobilization of ammonium and nitrate in terrestrial ecosystems. GLOBAL CHANGE BIOLOGY 2022; 28:4472-4488. [PMID: 35445472 DOI: 10.1111/gcb.16202] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 03/31/2022] [Accepted: 04/13/2022] [Indexed: 06/14/2023]
Abstract
Microbial nitrogen (N) immobilization, which typically results in soil N retention but based on the balance of gross N immobilization over gross N production, affects the fate of the anthropogenic reactive N. However, global patterns and drivers of soil gross immobilization of ammonium (INH4 ) and nitrate (INO3 ) are still only tentatively known. Here, we provide a comprehensive analysis considering gross N production rates, soil properties, and climate and their interactions for a deeper understanding of the patterns and drivers of INH4 and INO3 . By compiling and analyzing 1966 observations from 274 15 N-labelled studies, we found a global average of INH4 and INO3 of 7.41 ± 0.72 and 2.03 ± 0.30 mg N kg-1 day-1 with a ratio of INO3 to INH4 (INO3 :INH4 ) of 0.79 ± 0.11. Soil INH4 and INO3 increased with increasing soil gross N mineralization (GNM) and nitrification (GN), microbial biomass, organic carbon, and total N and decreasing soil bulk density. Our analysis revealed that GNM and GN were the main stimulators for INH4 and INO3 , respectively. The structural equation modeling showed that higher soil microbial biomass, total N, pH, and precipitation stimulate INH4 and INO3 through enhancing GNM and GN. However, higher temperature and soil bulk density suppress INH4 and INO3 by reducing microbial biomass and total N. Soil INH4 varied with terrestrial ecosystems, being greater in grasslands and forests, which have higher rates of GNM, than in croplands. The highest INO3 :INH4 was observed in croplands, which had higher rates of GN. The global average of GN to INH4 was 2.86 ± 0.31, manifesting a high potential risk of N loss. We highlight that anthropogenic activities that influence soil properties and gross N production rates likely interact with future climate changes and land uses to affect soil N immobilization and, eventually, the fate of the anthropogenic reactive N.
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Affiliation(s)
- Ahmed S Elrys
- School of Geography, Nanjing Normal University, Nanjing, China
- Soil Science Department, Faculty of Agriculture, Zagazig University, Zagazig, Egypt
| | - Zhaoxiong Chen
- School of Geography, Nanjing Normal University, Nanjing, China
| | - Jing Wang
- College of Forestry, Nanjing Forestry University, Nanjing, China
| | - Yves Uwiragiye
- College of Natural Resources and Environment, Northwest A&F University, Yangling, China
- Department of Agriculture, Faculty of Agriculture, Environmental Management and Renewable Energy, University of Technology and Arts of Byumba, Byumba, Rwanda
| | - Ayman M Helmy
- Soil Science Department, Faculty of Agriculture, Zagazig University, Zagazig, Egypt
| | - El-Sayed M Desoky
- Botany Department, Faculty of Agriculture, Zagazig University, Zagazig, Egypt
| | - Yi Cheng
- School of Geography, Nanjing Normal University, Nanjing, China
- Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, China
- Jiangsu Engineering Research Center for Soil Utilization & Sustainable Agriculture, Nanjing, China
| | - Jin-Bo Zhang
- School of Geography, Nanjing Normal University, Nanjing, China
| | - Zu-Cong Cai
- School of Geography, Nanjing Normal University, Nanjing, China
| | - Christoph Müller
- Institute of Plant Ecology, Justus Liebig University Giessen, Giessen, Germany
- School of Biology and Environmental Science and Earth Institute, University College Dublin, Dublin, Ireland
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Xu J, Min J, Sun H, Singh BP, Wang H, Shi W. Biostimulants decreased nitrogen leaching and NH 3 volatilization but increased N 2O emission from plastic-shed greenhouse vegetable soil. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:6093-6102. [PMID: 34431054 DOI: 10.1007/s11356-021-16039-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Accepted: 08/14/2021] [Indexed: 06/13/2023]
Abstract
Biostimulant application is an effective strategy to enhance soil fertility and plant growth. However, its comprehensive impacts on nitrogen (N) uptake and reactive N (Nr) losses via leaching, ammonia (NH3) volatilization, and nitrous oxide (N2O) emission from plastic-shed greenhouse vegetable system are still little known. Therefore, a field experiment was conducted with cauliflower-tomato growth rotation (from September 6, 2018, to July 17, 2019) receiving three biostimulants, i.e., humic acid (HA), algae extract (AE), and chitosan (CT), as well as a control without stimulant. The cumulative Nr losses over the cauliflower-tomato growth cycle via leaching, NH3 volatilization, and N2O emission were 104-175 kg N ha-1, 2.32-3.85 kg N ha-1, and 0.70-0.85 kg N ha-1, respectively. Biostimulant application significantly (P < 0.05) retarded the total N leaching by 17-44% in tomato season, while suppressed the NH3 volatilization by 18-38% in cauliflower season. Overall, AE showed the best inhibition efficiency on Nr losses by significantly (P < 0.05) decreasing total N leaching and NH3 volatilization by 36-44% and 38-52% in both vegetable seasons, compare to the control. However, all three biostimulants stimulated the N2O emission under both vegetable cycles. Interestingly, all biostimulant-added treatments promote the cauliflower and tomato yield, particularly following the HA and AE amendments, which bring local farmers approximately 4,384-10,035 yuan RMB ha-1 more income. Enhanced yield under biostimulant treatments was due to higher N uptake capacity and enhanced root morphology. In summary, biostimulants have a contrasting influence on three major Nr lost pathways in greenhouse vegetable production. We recommend that AE is the most optimal biostimulant as it increases vegetable yield and decreases total N leaching and NH3 volatilization while not dramatically increase the N2O emission.
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Affiliation(s)
- Jiyuan Xu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing, 210008, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ju Min
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing, 210008, China
| | - Haijun Sun
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing, 210037, China
- Key Laboratory of Soil and Water Conservation and Ecological Restoration of Jiangsu Province, Nanjing Forestry University, Nanjing, 210037, China
| | - Bhupinder Pal Singh
- Elizabeth Macarthur Agricultural Institute, NSW Department of Primary Industries, Menangle, NSW, 2568, Australia
| | - Hailong Wang
- Biochar Engineering Technology Research Center of Guangdong Province, School of Environmental and Chemical Engineering, Foshan University, Foshan, 528000, China
- Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, Zhejiang A&F University, Hangzhou, 311300, China
| | - Weiming Shi
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing, 210008, China.
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Qiao J, Zhao D, Zhou W, Yan T, Yang L. Sustained rice yields and decreased N runoff in a rice-wheat cropping system by replacing wheat with Chinese milk vetch and sharply reducing fertilizer use. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 288:117722. [PMID: 34256283 DOI: 10.1016/j.envpol.2021.117722] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 06/20/2021] [Accepted: 07/03/2021] [Indexed: 06/13/2023]
Abstract
Pollution from the paddy fields has posed a threat to surface water quality, and the reactive N in runoff has been recognized as the dominant contributor. In the rice-wheat systems of eastern China, replacing wheat (Triticum aestivum) with Chinese milk vetch (CMV) (Astragalus sinicus) is known to reduce total fertilizer N use and associated N losses during winter; however, the function of the rice-CMV system in controlling the N runoff loss was overlooked during the summer rice-growing season. Over 6 years, we monitored soil mineral N, plant N accumulation, rice grain yield, N agronomic efficiency (AEN), and N runoff in rice-CMV fertilizer N rate-response experiments and made comparisons with the conventional N inputs in rice-wheat rotation. Aboveground CMV residues added 65-116 kg N ha-1 yr-1; therefore, by adjusting the fertilizer time, the rice in this system required 44-56% less N fertilizer to produce rice yields equivalent to the 270 kg N ha-1 (district average, C270) used in the rice-wheat system. In all fertilizer N application treatments, 120 kg ha-1 seemed to be the threshold that ensured the soil N supply, the N accumulation at rice critical stages, and consequently, the current level rice yield. The corresponding runoff N averaged 9.3 kg ha-1 season-1, which was 51.8% less than that in C270 (19.3 kg ha-1 season-1). Cumulative N runoff (total N and NH4+-N) correlated strongly with fertilizer N input for any single year (sample size = 108, P < 0.01). Application of 30-120 kg fertilizer N ha-1 gave an equivalent AEN, which indicated that the integration of CMV and fertilizer N could increase the agronomic efficiency of N fertilizer applied to the rice. Rotating paddy rice with CMV instead of wheat, together with the suitable adjustment of N fertilizer, could sustain rice yield and gain the utmost environmental benefits from rice-based agroecosystems.
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Affiliation(s)
- Jun Qiao
- Institute of Soil Science, Chinese Academy of Sciences, No. 71 East Beijing Road, Nanjing, 210008, China.
| | - Dong Zhao
- Institute of Geography, Henan Academy of Sciences, No. 64 Longhai Middle Road, Zhengzhou, 450052, China
| | - Wei Zhou
- Institute of Soil Science, Chinese Academy of Sciences, No. 71 East Beijing Road, Nanjing, 210008, China.
| | - Tingmei Yan
- Institute of Soil Science, Chinese Academy of Sciences, No. 71 East Beijing Road, Nanjing, 210008, China
| | - Linzhang Yang
- Jiangsu Academy of Agricultural Sciences, No. 50 Zhongling Road, Nanjing, 210014, China
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