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Climate Sensitivities of Carbon Turnover Times in Soil and Vegetation: Understanding Their Effects on Forest Carbon Sequestration

文献类型：期刊论文

作者Ge, Rong1,13; He, Honglin11,12; Zhang, Li12; Ren, Xiaoli12; Williams, Mathew; Yu, Guirui; Smallman, T. Luke; Zhou, Tao8; Li, Pan7; Xie, Zongqiang6
刊名JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
出版日期2022
卷号127期号:3
ISSN号2169-8953
关键词soil carbon turnover time vegetation carbon turnover time climate sensitivity forest carbon sequestration
DOI10.1029/2020JG005880
文献子类Article
英文摘要The high uncertainty associated with the response of terrestrial carbon (C) cycle to climate is dominated by ecosystem C turnover time (tau(eco)). Although the relationship between tau(eco) and climate has been extensively studied, significant knowledge gaps remain regarding the differential climate sensitivities of turnover time in major biomass (tau(veg)) and soil (tau(soil)) pools, and their effects on vegetation and soil C sequestration under climate change are poorly understood. Here, we collected multiple time series observations on soil and vegetation C from permanent plots in 10 Chinese forests and used model-data fusion to retrieve key C cycle process parameters that regulate tau(soil) and tau(veg). Our analysis showed that tau(veg) and tau(soil) both decreased with increasing temperature and precipitation, and tau(soil) was more than twice as sensitive (1.27 years/degrees C, 1.70 years/100 mm) than tau(veg) (0.53 years/degrees C, 0.40 years/100 mm). The higher climate sensitivity of tau(soil) caused a more rapid decrease in tau(soil) than in tau(veg) with increasing temperature and precipitation, thereby significantly reducing the difference between tau(soil) and tau(veg) (tau(diff)) under warm and humid conditions. tau(diff), an indicator of the balance between the soil C input and exit rate, was strongly responsible for the variation (more than 50%) in soil C sequestration. Therefore, a smaller tau(diff) under warm and humid conditions suggests a relatively lower contribution from soil C sequestration. This information has strong implications for understanding forest C-climate feedback, predicting forest C sink distributions in soil and vegetation under climate change, and implementing C mitigation policies in forest plantations or soil conservation.
学科主题Environmental Sciences ; Geosciences, Multidisciplinary
电子版国际标准刊号2169-8961
出版地WASHINGTON
WOS关键词GROSS PRIMARY PRODUCTIVITY ; DATA ASSIMILATION SYSTEM ; INDUCED TREE MORTALITY ; ORGANIC-MATTER ; TEMPERATURE SENSITIVITY ; RESIDENCE TIME ; RADIOCARBON CONSTRAINTS ; TERRESTRIAL ECOSYSTEMS ; NUTRIENT AVAILABILITY ; EDDY COVARIANCE
WOS研究方向Science Citation Index Expanded (SCI-EXPANDED)
语种英语
出版者AMER GEOPHYSICAL UNION
WOS记录号WOS:000777487700014
资助机构National Natural Science Foundation of China [42030509] ; National Key Research and Development Program of China [2021YFF0703903] ; Strategic Priority Research Program of the Chinese Academy of Sciences [XDA19020301] ; Newton Fund CSSP, from the Royal Society ; UKSA Forests 2020
源URL[http://ir.ibcas.ac.cn/handle/2S10CLM1/28932]  
专题植被与环境变化国家重点实验室
作者单位1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing, Peoples R China
2.Chinese Acad Sci, Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Mengla, Peoples R China
3.Chinese Acad Sci, South China Bot Garden, Guangzhou, Peoples R China
4.Chinese Acad Sci, Inst Appl Ecol, Shenyang, Peoples R China
5.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China
6.Tianjin Univ, Inst Surface Earth Syst Sci, Tianjin, Peoples R China
7.Beijing Normal Univ, State Key Lab Earth Surface Proc & Resource Ecol, Beijing, Peoples R China
8.Univ Edinburgh, Natl Ctr Earth Observat, Edinburgh, Midlothian, Scotland
9.Univ Edinburgh, Sch GeoSci, Edinburgh, Midlothian, Scotland
10.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Ge, Rong,He, Honglin,Zhang, Li,et al. Climate Sensitivities of Carbon Turnover Times in Soil and Vegetation: Understanding Their Effects on Forest Carbon Sequestration[J]. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,2022,127(3).
APA Ge, Rong.,He, Honglin.,Zhang, Li.,Ren, Xiaoli.,Williams, Mathew.,...&Lin, Luxiang.(2022).Climate Sensitivities of Carbon Turnover Times in Soil and Vegetation: Understanding Their Effects on Forest Carbon Sequestration.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,127(3).
MLA Ge, Rong,et al."Climate Sensitivities of Carbon Turnover Times in Soil and Vegetation: Understanding Their Effects on Forest Carbon Sequestration".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 127.3(2022).

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来源：植物研究所

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