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Divergent impacts of atmospheric water demand on gross primary productivity in three typical ecosystems in China
Chen, Ning1; Song, Changchun1,2; Xu, Xiaofeng4; Wang, Xianwei1; Cong, Nan3; Jiang, Peipei5; Zu, Jiaxing6; Sun, Li1; Song, Yanyu1; Zuo, Yunjiang1; Liu, Jianzhao1; Zhang, Tao7; Xu, Mingjie7; Jiang, Peng8; Wang, Zhipeng3; Huang, Ke3
2021-09-15
Source PublicationAGRICULTURAL AND FOREST METEOROLOGY
ISSN0168-1923
Volume307Pages:12
Corresponding AuthorSong, Changchun(songcc@iga.ac.cn)
AbstractAtmospheric 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.
KeywordVapor pressure deficit Soil water content Gross primary productivity Heterogeneous China
DOI10.1016/j.agrformet.2021.108527
WOS KeywordVAPOR-PRESSURE DEFICIT ; TIBETAN PLATEAU ; ALPINE MEADOW ; DIFFERENTIAL RESPONSES ; USE EFFICIENCY ; CARBON FLUXES ; PHOTOSYNTHESIS ; EXCHANGE ; PRECIPITATION ; SENSITIVITY
Indexed BySCI
Language英语
Funding ProjectNational 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]
Funding OrganizationNational Key Research and Development Program of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation
WOS Research AreaAgriculture ; Forestry ; Meteorology & Atmospheric Sciences
WOS SubjectAgronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS IDWOS:000682515100037
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/164690
Collection中国科学院地理科学与资源研究所
Corresponding AuthorSong, Changchun
Affiliation1.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
Recommended Citation
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.
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