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Luo C, Fang Z, Liu J, Han F, Wu Y, Bing H, Zhao P. Root carbon and soil temperature may be key drivers of below-ground biomass in grassland following prescribed fires in autumn and spring. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 349:119337. [PMID: 37951102 DOI: 10.1016/j.jenvman.2023.119337] [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: 05/29/2023] [Revised: 10/10/2023] [Accepted: 10/12/2023] [Indexed: 11/13/2023]
Abstract
Under global warming, fire and the season in which the fire occurs both have important impacts on grassland plant biomass. Still, the effect of fire on below-ground biomass (BB) along a natural aridity gradient and the main impact factors remain unclear. Here, we conducted a fire manipulation experiment (including un-fired, autumn fire and spring fire treatments) to investigate the effects of prescribed fire on BB and its critical determinants along a transect of grassland in northern China. BB had different response strategies in different aridity regions and fire seasons, despite above-ground biomass (AB) and root-shoot ratio were not significantly affected by fire. General linear regression models revealed that the fire changed the trend of increasing BB to decreasing along increasing aridity (p < 0.05). Random forest model (RFM) and partial correlations revealed that the BB was primarily influenced by aridity, followed by the nitrogen (N) and phosphorus (P) concentration ratio of AB under un-fired disturbance. For autumn fire, the BB was primarily influenced by below-ground biomass carbon concentration (BB c), followed by the C and N concentration ratio of BB. For spring fire, the BB was primarily influenced by soil temperature (ST), followed by aridity and soil total phosphorus concentration (Soil p). Furthermore, partial least squares path model (PLS-PM) revealed that autumn fires weakened the effects of environmental factors on BB, while spring fires enhanced the effects of soil nutrients on BB. These suggested that fire disrupted the original stable nutrient dynamics of BB. Our results suggested that fire promoted the growth of BB in relatively humid areas (aridity = 0.51-0.53) while inhibited the growth of BB in relatively arid areas (aridity = 0.68-0.74). BB c and ST may be key drivers of BB after prescribed fire in autumn and spring.
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Affiliation(s)
- Chaoyi Luo
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A & F University, Yangling 712100, China; Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, China; Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610299, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhao Fang
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A & F University, Yangling 712100, China; Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, China
| | - Jiang Liu
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A & F University, Yangling 712100, China; Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, China
| | - Fengpeng Han
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A & F University, Yangling 712100, China; Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, China.
| | - Yanhong Wu
- Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610299, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Haijian Bing
- Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610299, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Peng Zhao
- Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610299, China; University of Chinese Academy of Sciences, Beijing 100049, China
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Silva MC, Moonlight P, Oliveira RS, Pennington RT, Rowland L. Toward diverse seed sourcing to upscale ecological restoration in the Brazilian Cerrado. Front Ecol Evol 2022. [DOI: 10.3389/fevo.2022.1045591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Seed markets are vital to scaling up ecosystem restoration in the Brazilian Cerrado, home of the world’s most species-rich grasslands and savannas. We compiled lists of species traded by four major Cerrado seed supply systems to investigate the representativeness of the species currently available for seed-based restoration. We also identified whether dominant ground-layer species are being sourced for seed production. Seeds from 263 Cerrado species can be purchased for restoration, of which 68% are trees, particularly legumes (24%). 63% of the traded species were found in only one seed supply system. The five most dominant graminoids of the Cerrado ground layer were available for sale, but two additional species uncommon in old-growth areas represented 44% of the sales of a key seed trader in Central Brazil. The expansion of Cerrado seed supply systems should be supported to further increase the number of species on the market. Sourcing seeds from a diversity of herbaceous species is central to facilitating the restoration of species-rich grasslands and savannas in the Cerrado. Recovering the diversity and functioning of old-growth open ecosystems through seeds will depend on increasing the supply and demand for species typical of Cerrado’s ground layer.
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Porto AB, do Prado MAPF, Rodrigues LDS, Overbeck GE. Restoration of subtropical grasslands degraded by non‐native pine plantations: Effects of litter removal and hay transfer. Restor Ecol 2022. [DOI: 10.1111/rec.13773] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ana Boeira Porto
- Programa de Pós‐Graduação em Botânica Universidade Federal do Rio Grande do Sul Porto Alegre Brazil
| | | | - Lucas dos Santos Rodrigues
- Programa de Pós‐Graduação em Oceanografia Biológica Universidade Federal do Rio Grande, Rio Grande Brazil
| | - Gerhard Ernst Overbeck
- Programa de Pós‐Graduação em Botânica Universidade Federal do Rio Grande do Sul Porto Alegre Brazil
- Programa de Pós‐Graduação em Ecologia Universidade Federal do Rio Grande do Sul Porto Alegre Brazil
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Buisson E, Archibald S, Fidelis A, Suding KN. Ancient grasslands guide ambitious goals in grassland restoration. Science 2022; 377:594-598. [PMID: 35926035 DOI: 10.1126/science.abo4605] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Grasslands, which constitute almost 40% of the terrestrial biosphere, provide habitat for a great diversity of animals and plants and contribute to the livelihoods of more than 1 billion people worldwide. Whereas the destruction and degradation of grasslands can occur rapidly, recent work indicates that complete recovery of biodiversity and essential functions occurs slowly or not at all. Grassland restoration-interventions to speed or guide this recovery-has received less attention than restoration of forested ecosystems, often due to the prevailing assumption that grasslands are recently formed habitats that can reassemble quickly. Viewing grassland restoration as long-term assembly toward old-growth endpoints, with appreciation of feedbacks and threshold shifts, will be crucial for recognizing when and how restoration can guide recovery of this globally important ecosystem.
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Affiliation(s)
- Elise Buisson
- Institut Méditerranéen de Biodiversité et d'Ecologie, Avignon Université, CNRS, IRD, Aix Marseille Université, 84911 Avignon, France
| | - Sally Archibald
- Centre for African Ecology, School of Animal, Plant and Environmental Sciences, University of the Witwatersrand, Johannesburg 2050, South Africa
| | - Alessandra Fidelis
- Instituto de Biociências, Lab of Vegetation Ecology, Universidade Estadual Paulista (UNESP), Rio Claro 13506-900, Brazil
| | - Katharine N Suding
- Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO, USA.,Institute of Arctic and Alpine Research, University of Colorado, Boulder, CO, USA
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D’Angioli AM, Giles AL, Costa PB, Wolfsdorf G, Pecoral LLF, Verona L, Piccolo F, Sampaio AB, Schmidt IB, Rowland L, Lambers H, Kandeler E, Oliveira RS, Abrahão A. Abandoned pastures and restored savannahs have distinct patterns of plant‐soil feedback and nutrient cycling compared with native Brazilian savannahs. J Appl Ecol 2022. [DOI: 10.1111/1365-2664.14193] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- André M. D’Angioli
- Programa de pós‐graduação em Ecologia, Departamento de Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas, Campinas Brasil
| | - André L. Giles
- Programa de pós‐graduação em Ecologia, Departamento de Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas, Campinas Brasil
| | - Patricia B. Costa
- Programa de pós‐graduação em Biologia Vegetal, Departamento de Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas, Campinas Brasil
- School of Biological Sciences University of Western Australia Perth Australia
| | - Gabriel Wolfsdorf
- Programa de pós‐graduação em Ecologia, Departamento de Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas, Campinas Brasil
| | - Luisa L. F. Pecoral
- Departamento de Biologia Vegetal, Universidade Estadual de Campinas, Campinas, São Paulo Brasil
| | - Larissa Verona
- Departamento de Biologia Vegetal, Universidade Estadual de Campinas, Campinas, São Paulo Brasil
| | - Fernanda Piccolo
- Departamento de Biologia Vegetal, Universidade Estadual de Campinas, Campinas, São Paulo Brasil
| | | | - Isabel B. Schmidt
- Departamento de Ecologia, Universidade de Brasília, Brasília DF Brasil
| | - Lucy Rowland
- College of Life and Environmental Sciences University of Exeter Exeter UK
| | - Hans Lambers
- School of Biological Sciences University of Western Australia Perth Australia
| | - Ellen Kandeler
- Institute of Soil Science and Land Evaluation, Soil Biology Department University of Hohenheim Stuttgart Germany
| | - Rafael S. Oliveira
- Departamento de Biologia Vegetal, Universidade Estadual de Campinas, Campinas, São Paulo Brasil
- School of Biological Sciences University of Western Australia Perth Australia
| | - Anna Abrahão
- Programa de pós‐graduação em Biologia Vegetal, Departamento de Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas, Campinas Brasil
- Institute of Soil Science and Land Evaluation, Soil Biology Department University of Hohenheim Stuttgart Germany
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