Interannual variability of ecosystem carbon exchange: From observation to prediction

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

	Interannual variability of ecosystem carbon exchange: From observation to prediction
	Niu, SL; Fu, Z; Luo, YQ; Stoy, PC; Keenan, TF; Poulter, B; Zhang, LM; Piao, SL; Zhou, XH; Zheng, H
刊名	GLOBAL ECOLOGY AND BIOGEOGRAPHY
	2017
卷号	26 期号:11 页码:1225-1237
关键词	climate change interannual variability net ecosystem exchange photosynthesis respiration
ISSN号	1466-822X
英文摘要	Aim: Terrestrial ecosystems have sequestered, on average, the equivalent of 30% of anthropogenic carbon (C) emissions during the past decades, but annual sequestration varies from year to year. For effective C management, it is imperative to develop a predictive understanding of the interannual variability (IAV) of terrestrial net ecosystem C exchange (NEE). Location: Global terrestrial ecosystems. Methods: We conducted a comprehensive review to examine the IAV of NEE at global, regional and ecosystem scales. Then we outlined a conceptual framework for understanding how anomalies in climate factors impact ecological processes of C cycling and thus influence the IAV of NEE through biogeochemical regulation. Results: The phenomenon of IAV in land NEE has been ubiquitously observed at global, regional and ecosystem scales. Global IAV is often attributable to either tropical or semi-arid regions, or to some combination thereof, which is still under debate. Previous studies focus on identifying climate factors as driving forces of IAV, whereas biological mechanisms underlying the IAV of ecosystem NEE are less clear. We found that climate anomalies affect the IAV of NEE primarily through their differential impacts on ecosystem C uptake and respiration. Moreover, recent studies suggest that the carbon uptake period makes less contribution than the carbon uptake amplitude to IAV in NEE. Although land models incorporate most processes underlying IAV, their efficacy to predict the IAV in NEE remains low. Main conclusions: To improve our ability to predict future IAV of the terrestrial C cycle, we have to understand biological mechanisms through which anomalies in climate factors cause the IAV of NEE. Future research needs to pay more attention not only to the differential effects of climate anomalies on photosynthesis and respiration but also to the relative importance of the C uptake period and amplitude in causing the IAV of NEE. Ultimately, we need multiple independent approaches, such as benchmark analysis, data assimilation and time-series statistics, to integrate data, modelling frameworks and theory to improve our ability to predict future IAV in the terrestrial C cycle.
学科主题	Environmental Sciences & Ecology ; Physical Geography
语种	英语
出版者	WILEY
WOS记录号	WOS:000413906800002
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/43988]
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
推荐引用方式 GB/T 7714	Niu, SL,Fu, Z,Luo, YQ,et al. Interannual variability of ecosystem carbon exchange: From observation to prediction[J]. GLOBAL ECOLOGY AND BIOGEOGRAPHY,2017,26(11):1225-1237.
APA	Niu, SL.,Fu, Z.,Luo, YQ.,Stoy, PC.,Keenan, TF.,...&Yu, GR.(2017).Interannual variability of ecosystem carbon exchange: From observation to prediction.GLOBAL ECOLOGY AND BIOGEOGRAPHY,26(11),1225-1237.
MLA	Niu, SL,et al."Interannual variability of ecosystem carbon exchange: From observation to prediction".GLOBAL ECOLOGY AND BIOGEOGRAPHY 26.11(2017):1225-1237.