Sensitivity of terrestrial carbon cycle to changes in precipitation regimes

doi:10.1016/j.ecolind.2020.106223

	Sensitivity of terrestrial carbon cycle to changes in precipitation regimes
	Wang, Zhipeng 2,3; He, Yongtao 2; Niu, Ben 2; Wu, Jianshuang 1,4; Zhang, Xianzhou 2; Zu, Jiaxing 2,3; Huang, Ke 2; Li, Meng 2,3; Cao, Yanan 2,3; Zhang, Yanjie 2,3
刊名	ECOLOGICAL INDICATORS
	2020-06-01
卷号	113 页码:9
关键词	Climate change DGVM models Precipitation distribution Relative weight Terrestrial carbon cycle Sensitivity
ISSN号	1470-160X
DOI	10.1016/j.ecolind.2020.106223
通讯作者	Zhang, Xianzhou(zhangxz@igsnrr.ac.cn)
英文摘要	Climate change critically affects the carbon cycle of terrestrial ecosystems and thereafter the climate-carbon feedback. Previous studies have addressed the changes in temporal and spatial distribution of precipitation, termed as altered precipitation regimes. However, the response of terrestrial carbon cycle to the changes remain unclear. In this study, we used three process-based models to investigate the effect of changes in precipitation regimes on interannual variability (IAV) of gross primary productivity (GPP), net ecosystem productivity (NEP) and ecosystem respiration (RE). Annual sum of precipitation (PRE) and its monthly distribution, including its uniformity (PCI, precipitation concentration index) and timing (PCT, precipitation center time index), were used to describe the changes in precipitation regimes. Our results showed that the anomalies of both GPP and NEP in most biomes can be dominantly explained by anomalies of PRE. In addition, we also found that PCI and PCT were responsible for carbon dynamics in some specific biomes. For example, PCI dominated anomalies of both GPP and NEP in evergreen broadleaf forests (EBF), and a lower PCI (more uniform) is conducive to the increase of GPP and NEP. PCT is critical in driving the anomaly of GPP in mix forest (MF), grassland (GRA) and barren vegetation (Barren), and more precipitation distributed in early growing season benefits the increase of GPP. The sensibility of carbon cycle to changes in precipitation is biome specific, being likely due to the mismatch between water use ratio (WUR, defined as the ratio of transpiration to evapotranspiration) and precipitation distribution, implying that changes in distribution of precipitation among seasons/months may change the water availability. Our findings highlighted the necessity to pay more attention to the effects of altered precipitation distribution on changes in ecosystem multifunctionality related to carbon cycle.
资助项目	Ministry of Science and Technology of China[2016YFC0502001] ; Ministry of Science and Technology of China[2017YFA0604801] ; Chinese Academy of Sciences Key Project[KFJ-STS-QYZD-075] ; National Natural Science Foundation of China[41571042] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA20010201] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA19050502]
WOS关键词	NET PRIMARY PRODUCTIVITY ; INTERANNUAL VARIABILITY ; SEMIARID ECOSYSTEMS ; CLIMATE-CHANGE ; RESPONSES ; WATER ; LAND ; SOIL ; FLUXES ; RESPIRATION
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000523335900081
资助机构	Ministry of Science and Technology of China ; Chinese Academy of Sciences Key Project ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/133320]
专题	中国科学院地理科学与资源研究所
通讯作者	Zhang, Xianzhou
作者单位	1.Free Univ Berlin, Inst Biol, Theoret Ecol, D-14195 Berlin, Germany 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Lhasa Plateau Ecosyst Res Stn, Beijing 100101, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.CAAS, Inst Environm & Sustainable Dev Agr, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Wang, Zhipeng,He, Yongtao,Niu, Ben,et al. Sensitivity of terrestrial carbon cycle to changes in precipitation regimes[J]. ECOLOGICAL INDICATORS,2020,113:9.
APA	Wang, Zhipeng.,He, Yongtao.,Niu, Ben.,Wu, Jianshuang.,Zhang, Xianzhou.,...&Wang, Xiangtao.(2020).Sensitivity of terrestrial carbon cycle to changes in precipitation regimes.ECOLOGICAL INDICATORS,113,9.
MLA	Wang, Zhipeng,et al."Sensitivity of terrestrial carbon cycle to changes in precipitation regimes".ECOLOGICAL INDICATORS 113(2020):9.