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Liu Y, Delgado-Baquerizo M, Bing H, Wang Y, Wang J, Chen J, Qiu S, Zhu H, Wu Y, Fang L, Chang R. Warming-Induced Shifts in Alpine Soil Microbiome: An Ecosystem-Scale Study with Environmental Context-Dependent Insights. Environ Res 2024; 255:119206. [PMID: 38782346 DOI: 10.1016/j.envres.2024.119206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Revised: 05/17/2024] [Accepted: 05/20/2024] [Indexed: 05/25/2024]
Abstract
Climate warming is a pressing global issue with substantial impacts on soil health and function. However, the influence of environmental context on the responses of soil microorganisms to warming remains largely elusive, particularly in alpine ecosystems. This study examined the responses of the soil microbiome to in situ experimental warming across three elevations (3,850 m, 4,100 m, and 4,250 m) in the meadow of Gongga Mountain, eastern Tibetan Plateau. Our findings demonstrate that soil microbial diversity is highly resilient to warming, with significant impacts observed only at specific elevations. Furthermore, the influence of warming on the composition of the soil microbial community is also elevation-dependent, underscoring the importance of local environmental context in shaping microbial evolution in alpine soils under climate warming. Notably, we identified soil moisture at 3,850 m and carbon-to-nitrogen ratio at 4,250 m as indirect predictors regulating the responses of microbial diversity to warming at specific elevations. These findings underscore the paramount importance of considering pre-existing environmental conditions in predicting the response of alpine soil microbiomes to climate warming. Our study provides novel insights into the intricate interactions between climate warming, soil microbiome, and environmental context in alpine ecosystems, illuminating the complex mechanisms governing soil microbial ecology in these fragile and sensitive environments.
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Affiliation(s)
- Ye Liu
- Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610299, China
| | - Manuel Delgado-Baquerizo
- Laboratorio de Biodiversidad y Funcionamiento Ecosistémico, Institutode Recursos Naturales y Agrobiología de Sevilla (IRNAS), CSIC, Sevilla, Spain
| | - Haijian Bing
- Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610299, China.
| | - Yuhan Wang
- Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610299, China; Key Laboratory of Green Utilization of Critical Non-metallic Mineral Resources, Ministry of Education, Wuhan University of Technology, Wuhan 430070, China
| | - Jianjun Wang
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academic of Sciences, Nanjing 210008, China
| | - Ji Chen
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
| | - Shaojun Qiu
- Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610299, China
| | - He Zhu
- Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610299, China
| | - Yanhong Wu
- Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610299, China
| | - Linchuan Fang
- Key Laboratory of Green Utilization of Critical Non-metallic Mineral Resources, Ministry of Education, Wuhan University of Technology, Wuhan 430070, China
| | - Ruiying Chang
- Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610299, China
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Fu F, Li Y, Zhang B, Zhu S, Guo L, Li J, Zhang Y, Li J. Differences in soil microbial community structure and assembly processes under warming and cooling conditions in an alpine forest ecosystem. Sci Total Environ 2024; 907:167809. [PMID: 37863238 DOI: 10.1016/j.scitotenv.2023.167809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 10/09/2023] [Accepted: 10/11/2023] [Indexed: 10/22/2023]
Abstract
Global climate change affects the soil microbial community assemblages of many ecosystems. However, little is known about the effects of climate warming on the structure of soil microbial communities or the underlying mechanisms that influence microbial community composition in alpine forest ecosystems. Thus, our ability to predict the future consequences of climate change is limited. In this study, with the use of PVC pipes, the in situ soils of the rush-tip long-bud Abies georgei var. smithii forest at 3500 and 4300 m above sea level (MASL) of the Sygera Mountains were incubated in pairs for 1 year to simulate climate cooling and warming. This shift corresponds to a change in soil temperature of ±4.7 °C. Findings showed that climate warming increased the complexity of bacterial networks but decreased the complexity of fungal networks. Climate cooling also increased the complexity of bacterial networks. However, in fungal communities, climate cooling increased the number of nodes but decreased the total number of edges. Stochastic processes acted as the drivers of bacterial community composition, with climate warming leading the shift from deterministic to stochastic drivers. Fungal communities were more sensitive to climate change than bacterial communities, with soil temperature (ST) and soil water content (SWC) acting as the main drivers of change. By contrast, soil bacterial communities were more closely related to soil conditions than fungal communities and remained stable after a year of soil transplantation. In conclusion, fungi and bacteria had different response patterns, and their responses to climate cooling and warming were asymmetric. This work is expected to contribute to our understanding of the response to climate change of soil microbial communities in alpine forests and our prediction of the functions of soil microbial ecosystems in alpine forests.
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Affiliation(s)
- Fangwei Fu
- Research Institute of Tibet Plateau Ecology, Tibet Agricultureal & Animal Husbandry University, Nyingchi, Tibet 860000, China; Key Laboratory of Forest Ecology in Tibet Plateau, Ministry of Education, Nyingchi, Tibet 860000, China; National Key Station of Field Scientific Observation & Experiment, Nyingchi, Tibet 860000, China; Key Laboratory of Alpine Vegetation Ecological Security in Tibet, Nyingchi, Tibet 860000, China
| | - Yueyao Li
- Research Institute of Tibet Plateau Ecology, Tibet Agricultureal & Animal Husbandry University, Nyingchi, Tibet 860000, China; Key Laboratory of Forest Ecology in Tibet Plateau, Ministry of Education, Nyingchi, Tibet 860000, China; National Key Station of Field Scientific Observation & Experiment, Nyingchi, Tibet 860000, China; Key Laboratory of Alpine Vegetation Ecological Security in Tibet, Nyingchi, Tibet 860000, China
| | - Bo Zhang
- Research Institute of Tibet Plateau Ecology, Tibet Agricultureal & Animal Husbandry University, Nyingchi, Tibet 860000, China; Key Laboratory of Forest Ecology in Tibet Plateau, Ministry of Education, Nyingchi, Tibet 860000, China; National Key Station of Field Scientific Observation & Experiment, Nyingchi, Tibet 860000, China; Key Laboratory of Alpine Vegetation Ecological Security in Tibet, Nyingchi, Tibet 860000, China
| | - Sijie Zhu
- Research Institute of Tibet Plateau Ecology, Tibet Agricultureal & Animal Husbandry University, Nyingchi, Tibet 860000, China; Key Laboratory of Forest Ecology in Tibet Plateau, Ministry of Education, Nyingchi, Tibet 860000, China; National Key Station of Field Scientific Observation & Experiment, Nyingchi, Tibet 860000, China; Key Laboratory of Alpine Vegetation Ecological Security in Tibet, Nyingchi, Tibet 860000, China
| | - Liangna Guo
- Research Institute of Tibet Plateau Ecology, Tibet Agricultureal & Animal Husbandry University, Nyingchi, Tibet 860000, China; Key Laboratory of Forest Ecology in Tibet Plateau, Ministry of Education, Nyingchi, Tibet 860000, China; National Key Station of Field Scientific Observation & Experiment, Nyingchi, Tibet 860000, China; Key Laboratory of Alpine Vegetation Ecological Security in Tibet, Nyingchi, Tibet 860000, China
| | - Jieting Li
- Research Institute of Tibet Plateau Ecology, Tibet Agricultureal & Animal Husbandry University, Nyingchi, Tibet 860000, China; Key Laboratory of Forest Ecology in Tibet Plateau, Ministry of Education, Nyingchi, Tibet 860000, China; National Key Station of Field Scientific Observation & Experiment, Nyingchi, Tibet 860000, China; Key Laboratory of Alpine Vegetation Ecological Security in Tibet, Nyingchi, Tibet 860000, China
| | - Yibo Zhang
- Research Institute of Tibet Plateau Ecology, Tibet Agricultureal & Animal Husbandry University, Nyingchi, Tibet 860000, China; Key Laboratory of Forest Ecology in Tibet Plateau, Ministry of Education, Nyingchi, Tibet 860000, China; National Key Station of Field Scientific Observation & Experiment, Nyingchi, Tibet 860000, China; Key Laboratory of Alpine Vegetation Ecological Security in Tibet, Nyingchi, Tibet 860000, China
| | - Jiangrong Li
- Research Institute of Tibet Plateau Ecology, Tibet Agricultureal & Animal Husbandry University, Nyingchi, Tibet 860000, China; Key Laboratory of Forest Ecology in Tibet Plateau, Ministry of Education, Nyingchi, Tibet 860000, China; National Key Station of Field Scientific Observation & Experiment, Nyingchi, Tibet 860000, China; Key Laboratory of Alpine Vegetation Ecological Security in Tibet, Nyingchi, Tibet 860000, China; State Key Laboratory of Tibetan Plateau Earth System, Resources and Environment (TPESRE), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China.
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Sierra CA, Ahrens B, Bolinder MA, Braakhekke MC, von Fromm S, Kätterer T, Luo Z, Parvin N, Wang G. Carbon sequestration in the subsoil and the time required to stabilize carbon for climate change mitigation. Glob Chang Biol 2024; 30:e17153. [PMID: 38273531 DOI: 10.1111/gcb.17153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 12/21/2023] [Accepted: 01/02/2024] [Indexed: 01/27/2024]
Abstract
Soils store large quantities of carbon in the subsoil (below 0.2 m depth) that is generally old and believed to be stabilized over centuries to millennia, which suggests that subsoil carbon sequestration (CS) can be used as a strategy for climate change mitigation. In this article, we review the main biophysical processes that contribute to carbon storage in subsoil and the main mathematical models used to represent these processes. Our guiding objective is to review whether a process understanding of soil carbon movement in the vertical profile can help us to assess carbon storage and persistence at timescales relevant for climate change mitigation. Bioturbation, liquid phase transport, belowground carbon inputs, mineral association, and microbial activity are the main processes contributing to the formation of soil carbon profiles, and these processes are represented in models using the diffusion-advection-reaction paradigm. Based on simulation examples and measurements from carbon and radiocarbon profiles across biomes, we found that advective and diffusive transport may only play a secondary role in the formation of soil carbon profiles. The difference between vertical root inputs and decomposition seems to play a primary role in determining the shape of carbon change with depth. Using the transit time of carbon to assess the timescales of carbon storage of new inputs, we show that only small quantities of new carbon inputs travel through the profile and can be stabilized for time horizons longer than 50 years, implying that activities that promote CS in the subsoil must take into consideration the very small quantities that can be stabilized in the long term.
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Affiliation(s)
- Carlos A Sierra
- Max Planck Institute for Biogeochemistry, Jena, Germany
- Department of Ecology, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | | | - Martin A Bolinder
- Department of Ecology, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | | | - Sophie von Fromm
- Max Planck Institute for Biogeochemistry, Jena, Germany
- Department of Environmental Science, ETH Zurich, Zurich, Switzerland
| | - Thomas Kätterer
- Department of Ecology, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Zhongkui Luo
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, China
| | - Nargish Parvin
- Department of Ecology, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Guocheng Wang
- Faculty of Geographical Science, Beijing Normal University, Beijing, China
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