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Divergent shifts in peak photosynthesis timing of temperate and alpine grasslands in China

文献类型：期刊论文

作者Yang, Jilin5,7; Dong, Jinwei5; Xiao, Xiangming4; Dai, Junhu5; Wu, Chaoyang5; Xia, Jianyang6,8; Zhao, Guosong5; Zhao, Miaomiao2,7; Li, Zhaolei1; Zhang, Yao3
刊名REMOTE SENSING OF ENVIRONMENT
出版日期2019-11-01
卷号233页码:14
关键词Peak photosynthesis timing Grassland peak phenology Photosynthetic seasonality Gross primary production Interannual variation
ISSN号0034-4257
DOI10.1016/j.rse.2019.111395
通讯作者Dong, Jinwei(dongjw@igsnrr.ac.cn) ; Ge, Quansheng(geqs@igsnrr.ac.cn)
英文摘要The changing climate is shifting the seasonality of photosynthesis in vegetation, including the start (SOS), end (EOS), and length (LOS) of the growing season, and the peak photosynthesis timing (PPT). While the SOS, EOS, and LOS have been widely investigated, the PPT of grasslands - as a proxy for the response of seasonal plant photosynthesis to climate change - has been overlooked. In this study, we propose a hybrid generalized additive model (HGAM) method to extract PPT using the Vegetation Photosynthesis Model (VPM)-based gross primary production (GPP) product, and we examine the dynamics, drivers, and consequences of PPT changes in temperate and alpine grasslands in China over 2000-2016. We found that the PPTs in temperate and alpine grasslands have exhibited advancing (with -0.68 days yr(-1), p < 0.05) and delaying (with 0.29 days yr(-1), p = 0.158) trends, respectively. In addition, preseason precipitation and soil moisture were positively correlated with the PPT in temperate and alpine grasslands, respectively, while the preseason temperature consistently controlled the PPT changes in both grasslands. Furthermore, we found that an earlier PPT was associated with higher annual production in the temperate grasslands but not in the alpine grasslands in China. The divergent PPT patterns indicated the varied adaptation characteristics to climatic constraints in the temperate and alpine grasslands and also caused different consequences on carbon uptake. This study highlights the importance of PPT in understanding the spatiotemporal dynamics of vegetation photosynthesis and the carbon cycle under a changing climate.
WOS关键词GROSS PRIMARY PRODUCTION ; GROWING-SEASON LENGTH ; CLIMATE-CHANGE ; LAND-SURFACE ; INTERANNUAL VARIABILITY ; VEGETATION PHENOLOGY ; PRIMARY PRODUCTIVITY ; NORTHERN-HEMISPHERE ; AUTUMN PHENOLOGY ; TIBETAN PLATEAU
资助项目National Key Research and Development Program of China[2018YFA0606101] ; Strategic Priority Research Program[XDA19040301] ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences (CAS)[QYZDB-SSW-DQC005] ; Thousand Youth Talents Plan ; China Scholarship Council
WOS研究方向Environmental Sciences & Ecology ; Remote Sensing ; Imaging Science & Photographic Technology
语种英语
WOS记录号WOS:000497601000029
出版者ELSEVIER SCIENCE INC
资助机构National Key Research and Development Program of China ; Strategic Priority Research Program ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences (CAS) ; Thousand Youth Talents Plan ; China Scholarship Council
源URL[http://ir.igsnrr.ac.cn/handle/311030/130122]  
专题陆地表层格局与模拟院重点实验室_外文论文
通讯作者Dong, Jinwei; Ge, Quansheng
作者单位1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China
3.Columbia Univ, Dept Earth & Environm Engn, New York, NY 10027 USA
4.Univ Oklahoma, Ctr Spatial Anal, Dept Microbiol & Plant Biol, Norman, OK 73019 USA
5.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China
6.East China Normal Univ, Sch Ecol & Environm Sci, Res Ctr Global Change & Ecol Forecasting, Shanghai 200241, Peoples R China
7.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
8.East China Normal Univ, Sch Ecol & Environm Sci, Tiantong Natl Stn Forest Ecosyst, Shanghai 200241, Peoples R China
推荐引用方式
GB/T 7714		 Yang, Jilin,Dong, Jinwei,Xiao, Xiangming,et al. Divergent shifts in peak photosynthesis timing of temperate and alpine grasslands in China[J]. REMOTE SENSING OF ENVIRONMENT,2019,233:14.
APA Yang, Jilin.,Dong, Jinwei.,Xiao, Xiangming.,Dai, Junhu.,Wu, Chaoyang.,...&Ge, Quansheng.(2019).Divergent shifts in peak photosynthesis timing of temperate and alpine grasslands in China.REMOTE SENSING OF ENVIRONMENT,233,14.
MLA Yang, Jilin,et al."Divergent shifts in peak photosynthesis timing of temperate and alpine grasslands in China".REMOTE SENSING OF ENVIRONMENT 233(2019):14.

入库方式： OAI收割

来源：地理科学与资源研究所

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