Redefinition and global estimation of basal ecosystem respiration rate

CORC > 地理科学与资源研究所 > 中国科学院地理科学与资源研究所 > 生态系统研究网络观测与模拟重点实验室 > CERN水分分中心

	Redefinition and global estimation of basal ecosystem respiration rate
	Yuan, Wenping 1; Luo, Yiqi 2; Li, Xianglan 1; Liu, Shuguang 3,4; Yu, Guirui 5; Zhou, Tao 6; Bahn, Michael 7; Black, Andy 8; Desai, Ankur R.9; Cescatti, Alessandro 10
刊名	GLOBAL BIOGEOCHEMICAL CYCLES
	2011-10-13
卷号	25
文献子类	Article
英文摘要	Basal ecosystem respiration rate (BR), the ecosystem respiration rate at a given temperature, is a common and important parameter in empirical models for quantifying ecosystem respiration (ER) globally. Numerous studies have indicated that BR varies in space. However, many empirical ER models still use a global constant BR largely due to the lack of a functional description for BR. In this study, we redefined BR to be ecosystem respiration rate at the mean annual temperature. To test the validity of this concept, we conducted a synthesis analysis using 276 site-years of eddy covariance data, from 79 research sites located at latitudes ranging from similar to 3 degrees S to similar to 70 degrees N. Results showed that mean annual ER rate closely matches ER rate at mean annual temperature. Incorporation of site-specific BR into global ER model substantially improved simulated ER compared to an invariant BR at all sites. These results confirm that ER at the mean annual temperature can be considered as BR in empirical models. A strong correlation was found between the mean annual ER and mean annual gross primary production (GPP). Consequently, GPP, which is typically more accurately modeled, can be used to estimate BR. A light use efficiency GPP model (i.e., EC-LUE) was applied to estimate global GPP, BR and ER with input data from MERRA (Modern Era Retrospective-Analysis for Research and Applications) and MODIS (Moderate resolution Imaging Spectroradiometer). The global ER was 103 Pg C yr (-1), with the highest respiration rate over tropical forests and the lowest value in dry and high-latitude areas.
WOS关键词	CARBON-DIOXIDE FLUX ; SOIL RESPIRATION ; EDDY COVARIANCE ; TEMPERATURE SENSITIVITY ; INTERANNUAL VARIABILITY ; CO2 EXCHANGE ; DECIDUOUS FOREST ; CLIMATE-CHANGE ; MEDITERRANEAN FOREST ; EUROPEAN FORESTS
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000297541400001
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/68135]
专题	地理科学与资源研究所_生态系统研究网络观测与模拟重点实验室_CERN水分分中心
通讯作者	Yuan, Wenping
作者单位	1.Beijing Normal Univ, Coll Global Change & Earth Syst Sci, Beijing 100875, Peoples R China 2.Univ Oklahoma, Dept Bot & Microbiol, Norman, OK 73019 USA 3.US Geol Survey, Earth Resources Observat & Sci Ctr, Sioux Falls, SD USA 4.S Dakota State Univ, Geog Informat Sci Ctr Excellence, Brookings, SD 57007 USA 5.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Synth Res Ctr,Chinese Ecosyst Res Network, Beijing, Peoples R China 6.Beijing Normal Univ, State Key Lab Earth Surface Proc & Resource, Beijing 100875, Peoples R China 7.Univ Innsbruck, Inst Ecol, A-6020 Innsbruck, Austria 8.Univ British Columbia, Fac Land & Food Syst, Vancouver, BC V5Z 1M9, Canada 9.Univ Wisconsin Madison, Nelson Inst Environm Studies, Ctr Climat Res, Atmospher & Ocean Sci Dept, Madison, WI USA 10.European Commiss, Joint Res Ctr, Inst Environm & Sustainabil, Ispra, Italy
推荐引用方式 GB/T 7714	Yuan, Wenping,Luo, Yiqi,Li, Xianglan,et al. Redefinition and global estimation of basal ecosystem respiration rate[J]. GLOBAL BIOGEOCHEMICAL CYCLES,2011,25.
APA	Yuan, Wenping.,Luo, Yiqi.,Li, Xianglan.,Liu, Shuguang.,Yu, Guirui.,...&Stoy, Paul C..(2011).Redefinition and global estimation of basal ecosystem respiration rate.GLOBAL BIOGEOCHEMICAL CYCLES,25.
MLA	Yuan, Wenping,et al."Redefinition and global estimation of basal ecosystem respiration rate".GLOBAL BIOGEOCHEMICAL CYCLES 25(2011).