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A globally robust relationship between water table decline, subsidence rate, and carbon release from peatlands

文献类型：期刊论文

作者Ma, Lei5,6; Zhu, Gaofeng7; Chen, Bolong5; Zhang, Kun1,8; Niu, Shuli2,4,6; Wang, Jinsong2,6; Ciais, Phillipe3; Zuo, Hongchao5
刊名COMMUNICATIONS EARTH & ENVIRONMENT
出版日期2022-10-29
卷号3期号:1页码:14
DOI10.1038/s43247-022-00590-8
通讯作者Zuo, Hongchao(zuohch@lzu.edu.cn)
英文摘要Peatland ecosystems are globally important carbon stores. Disturbances, such as drainage and climate drying, act to lower peatland water table depths, consequently enhancing soil carbon release and subsidence rates. Here, we conduct a global meta-analysis to quantify the relationship among water table depth, carbon release and subsidence. We find that the water table decline stimulated heterotrophic, rather than autotrophic, soil respiration, which was associated with an increase in subsidence rate. This relationship held across different climate zones and land uses. We find that 81% of the total annual soil respiration for all drained peatlands was attributable to tropical peatlands drained for agriculture and forestry and temperate peatlands drained for agriculture. Globally, we estimate that, drained peatlands release 645 Mt C yr(-1) (401-1025 Mt C yr(-1)) through soil respiration, equivalent to approximately 5% of global annual anthropogenic carbon emissions. Our findings highlight the importance of conserving pristine peatlands to help mitigate climate change. Heterotrophic soil respiration and subsidence are enhanced by water table decline, with a meta-analysis estimating that soil respiration in drained peatlands across the globe release 645 Mt carbon per year.
WOS关键词GREENHOUSE-GAS EMISSIONS ; SOIL RESPIRATION ; LAND-USE ; DIOXIDE EMISSIONS ; NITROUS-OXIDE ; PEAT ; RESPONSES ; WETLAND ; CO2 ; METAANALYSIS
资助项目Second Tibetan Plateau Scientific Expedition and Research Program (STEP)[2019QZKK0103] ; Double First-Class Special Guidance Project of Lanzhou University[561120206]
WOS研究方向Environmental Sciences & Ecology ; Geology ; Meteorology & Atmospheric Sciences
语种英语
出版者SPRINGERNATURE
WOS记录号WOS:000876332000003
资助机构Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Double First-Class Special Guidance Project of Lanzhou University
源URL[http://ir.igsnrr.ac.cn/handle/311030/186482]  
专题中国科学院地理科学与资源研究所
通讯作者Zuo, Hongchao
作者单位1.Univ Hong Kong, Dept Math, Hong Kong, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Simulat, Beijing 100101, Peoples R China
3.Univ Paris Saclay, Lab Sci Climat & & Environm, LSCE IRSL, CEA CNRS UVSQ, Gif Sur Yvette, France
4.Univ Chinese Acad Sci, Sch Resources & Environm, Beijing 100049, Peoples R China
5.Lanzhou Univ, Coll Atmospher Sci, 222 Tian Shui South Rd, Lanzhou 730000, Peoples R China
6.Southwest Minzu Univ, Sichuan Zoige Alpine Wetland Ecosyst Natl Observa, 16,South 4th Sect First Ring Rd, Chengdu 610041, Peoples R China
7.Lanzhou Univ, Coll Earth & Environm Sci, 222 Tian Shui South Rd, Lanzhou 730000, Peoples R China
8.Univ Hong Kong, Sch Biol Sci, Hong Kong, Peoples R China
推荐引用方式
GB/T 7714		 Ma, Lei,Zhu, Gaofeng,Chen, Bolong,et al. A globally robust relationship between water table decline, subsidence rate, and carbon release from peatlands[J]. COMMUNICATIONS EARTH & ENVIRONMENT,2022,3(1):14.
APA Ma, Lei.,Zhu, Gaofeng.,Chen, Bolong.,Zhang, Kun.,Niu, Shuli.,...&Zuo, Hongchao.(2022).A globally robust relationship between water table decline, subsidence rate, and carbon release from peatlands.COMMUNICATIONS EARTH & ENVIRONMENT,3(1),14.
MLA Ma, Lei,et al."A globally robust relationship between water table decline, subsidence rate, and carbon release from peatlands".COMMUNICATIONS EARTH & ENVIRONMENT 3.1(2022):14.

入库方式： OAI收割

来源：地理科学与资源研究所

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