Divergent impacts of atmospheric water demand on gross primary productivity in three typical ecosystems in China

doi:10.1016/j.agrformet.2021.108527

	Divergent impacts of atmospheric water demand on gross primary productivity in three typical ecosystems in China
	Chen, Ning 1; Song, Changchun 1,2; Xu, Xiaofeng 4; Wang, Xianwei 1; Cong, Nan 3; Jiang, Peipei 5; Zu, Jiaxing 6; Sun, Li 1; Song, Yanyu 1; Zuo, Yunjiang 1
刊名	AGRICULTURAL AND FOREST METEOROLOGY
	2021-09-15
卷号	307 页码:12
关键词	Vapor pressure deficit Soil water content Gross primary productivity Heterogeneous China
ISSN号	0168-1923
DOI	10.1016/j.agrformet.2021.108527
通讯作者	Song, Changchun(songcc@iga.ac.cn)
英文摘要	Atmospheric water demand is practically characterized as vapor pressure deficit (VPD) and has been identified as a critical driver of ecosystem function, by affecting plant mortality, wildfires, and carbon loss. In this study, we used daily eddy covariance data across Chinese forest, grassland and shrubland ecosystems, in combination with remote sensing data, to investigate the impacts of VPD on gross primary productivity (GPP). We found divergent VPD impacts on GPP among grassland, shrubland and forest ecosystems. The VPD yielded substantial inhibitory impacts on GPP in grassland ecosystems and this suppressing impact was regulated by soil water content (SWC), showing that GPP declined with VPD under dry conditions but increased with VPD under wet conditions. This GPP variance was attributed to VPD, SWC and their interactions. More than 50% of the variability in GPP was explained by SWC in grassland ecosystems and by VPD in forest and shrubland ecosystems. Partial correlation analysis, random forest, and multiple linear regression revealed similar results when temperature, radiation and SWC were considered. Compared with shrubland and forest ecosystems, grassland has drier environmental conditions and poorer soil water-holding capacity that led to lower SWC and stronger negative impacts on VPD. Thus, GPP was susceptible to the negative impacts of higher VPD, especially under dryness stress. Our results highlight the need to comprehensively consider divergent VPD impacts for different ecosystems to more accurately assess climate impacts on ecosystem function.
资助项目	National Key Research and Development Program of China[2016YFA0602303] ; National Natural Science Foundation of China[41730643] ; National Natural Science Foundation of China[42071133] ; National Natural Science Foundation of China[42001216] ; China Postdoctoral Science Foundation[2020M681058]
WOS关键词	VAPOR-PRESSURE DEFICIT ; TIBETAN PLATEAU ; ALPINE MEADOW ; DIFFERENTIAL RESPONSES ; USE EFFICIENCY ; CARBON FLUXES ; PHOTOSYNTHESIS ; EXCHANGE ; PRECIPITATION ; SENSITIVITY
WOS研究方向	Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000682515100037
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/164689]
专题	中国科学院地理科学与资源研究所
通讯作者	Song, Changchun
作者单位	1.Chinese Acad Sci, Northeast Inst Geog & Agroecol, Key Lab Wetland Ecol & Environm, Changchun 130102, Peoples R China 2.Dalian Univ Technol, Sch Hydraul Engn, Dalian 116024, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 4.San Diego State Univ, Biol Dept, Ecol Modeling & Integrat Lab, San Diego, CA 92182 USA 5.Shandong Normal Univ, Coll Life Sci, Key Lab Plant Stress Res, Jinan 250014, Peoples R China 6.Nanning Normal Univ, Minist Educ, Key Lab Environm Change & Resources Use Beibu Gul, Nanning 530001, Peoples R China 7.Shenyang Agr Univ, Coll Agron, Shenyang 110866, Peoples R China 8.China Meteorol Adm, Inst Liaoning Meteorol, Shenyang 110166, Peoples R China
推荐引用方式 GB/T 7714	Chen, Ning,Song, Changchun,Xu, Xiaofeng,et al. Divergent impacts of atmospheric water demand on gross primary productivity in three typical ecosystems in China[J]. AGRICULTURAL AND FOREST METEOROLOGY,2021,307:12.
APA	Chen, Ning.,Song, Changchun.,Xu, Xiaofeng.,Wang, Xianwei.,Cong, Nan.,...&Huang, Ke.(2021).Divergent impacts of atmospheric water demand on gross primary productivity in three typical ecosystems in China.AGRICULTURAL AND FOREST METEOROLOGY,307,12.
MLA	Chen, Ning,et al."Divergent impacts of atmospheric water demand on gross primary productivity in three typical ecosystems in China".AGRICULTURAL AND FOREST METEOROLOGY 307(2021):12.