典型文献
Overestimation of global soil heterotrophic respiration
文献摘要：
Soil heterotrophic respiration (Rh) is the flux of CO2 that microbes and soil fauna release to the atmosphere by extracting the energy of organic molecules that they break down [1].Rh closes the terrestrial carbon cycle by recycling more than 70％ of the annual total fixed carbon to the atmosphere per year so that it can be reused by plants for photosynthesis [2].Rh plays a key role in regulating the changes in atmospheric CO2 concentrations as well as the consequential climate feedbacks [3,4].However,global Rh estimates suffer from large uncertainty.The simulated global Rh value ranges from 30 to 64 Pg C a-1 by MsTMIP models [5],from 47 to 72 Pg C a-1 by Trendy models [6],and from 42 to 73 Pg C a-1 by CMIP5 models [1].High spatial heterogeneity and the close contin-gency of soil decomposition on environmental changes,such as temperature and soil moisture,may be a response to such great unpredictability [7].Rh is highly transient and variable at diurnal,seasonal and multiyear scales.Short-term observations and limited in situ measurements,as well as low representativeness in many key regions with high soil carbon stocks and difficult accessibili-ties,such as the northern circumpolar permafrost region and high-altitude Tibetan region,make Rh the most unpredictable pro-cess in land-carbon cycle models [8].Accurate estimates of Rh at regional and global scales are thus imperative to quantify the land carbon sink,to evaluate land-carbon cycle models and to define baselines for climate change mitigation efforts.
文献关键词：
中图分类号：
作者姓名：
Yue He;Jinzhi Ding
作者机构：
Sino-French Institute for Earth System Science,College of Urban and Environmental Sciences,Peking University,Beijing 100871,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
文献出处：
引用格式：
[1]Yue He;Jinzhi Ding-.Overestimation of global soil heterotrophic respiration)[J].科学通报（英文版）,2022(03):223-225
A类：
MsTMIP,Trendy,accessibili
B类：
Overestimation,global,soil,heterotrophic,respiration,Soil,Rh,flux,that,microbes,fauna,release,atmosphere,by,extracting,energy,organic,molecules,they,break,down,closes,terrestrial,carbon,cycle,recycling,more,than,annual,total,fixed,can,reused,plants,photosynthesis,plays,key,role,regulating,changes,atmospheric,concentrations,well,consequential,climate,feedbacks,However,estimates,suffer,from,large,uncertainty,simulated,value,ranges,Pg,models,CMIP5,High,spatial,heterogeneity,contin,gency,decomposition,environmental,such,temperature,moisture,may,response,great,unpredictability,highly,transient,variable,diurnal,seasonal,multiyear,scales,Short,term,observations,limited,situ,measurements,low,representativeness,many,regions,stocks,difficult,ties,northern,circumpolar,permafrost,altitude,Tibetan,make,most,unpredictable,pro,land,Accurate,regional,are,thus,imperative,quantify,sink,evaluate,define,baselines,mitigation,efforts
AB值：
0.572165
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