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Grassland production in response to changes in biological metrics over the Tibetan Plateau

文献类型：期刊论文

作者Jin, Jiaxin1,2; Ma, Xuanlong3,4; Chen, Huai5; Wang, Han6; Kang, Xiaoming7; Wang, Xufeng8; Wang, Ying9; Yong, Bin1,2; Guo, Fengsheng2
刊名SCIENCE OF THE TOTAL ENVIRONMENT
出版日期2019-05-20
卷号666页码:641-651
关键词Biological regulation Phonology Grassland The Tibetan Plateau Remote sensing
ISSN号0048-9697
DOI10.1016/j.scitotenv.2019.02.293
通讯作者Jin, Jiaxin(jiaxinking@hhu.edu.cn)
英文摘要A clear interannual variability in annual production of grasslands (termed AEVI) has been reported over the Tibetan Plateau (TP), but the underlying mechanism has not been fully understood. Here, we explained the interannual variability of AEVI during 2001-2015 by two phenological metrics (the start and end of the growing season, termed SOS and EOS, respectively) and one physiological metric (the maximum capacity of canopy light absorbance, termed MEVI) using MODIS Enhanced Vegetation Index (EVI) data over the TP. The results showed that the interannual variability of AEVI can be well attributed to not only the trends of, but also the sensitivities of AEVI to, the selected biological metrics. On the one hand, the advancing SOS and delaying EOS dominated the study area while both increased and decreased MEVI were observed. On the other hand, the AEVI responded negatively to the SOS and positively to the EOS and MEVI, exhibiting significant variations along the temperature and precipitation gradients. Hence, the current interannual variability of SOS and EOS mainly increased the AEVI; meanwhile, both enhancement and suppression of the interannual variability of MEVI to the AEVI were widespread over the TP. Overall, the interannual variability of MEVI mostly contributed to that of the AEVI, indicating a dominant role of the physiological metric rather than phenological metrics in carbon gain of TP grasslands. The achievements of this study are helpful to understand the underlying biological causes of the interannual variability of grassland production over the TP. (C) 2019 Elsevier B.V. All rights reserved.
收录类别SCI
WOS关键词NET PRIMARY PRODUCTION ; GROSS PRIMARY PRODUCTIVITY ; CLIMATE-CHANGE ; ANTHROPOGENIC ACTIVITIES ; INTERANNUAL VARIABILITY ; ALPINE GRASSLAND ; RANGELAND DEGRADATION ; SPRING PHENOLOGY ; PLANT PHENOLOGY ; CARBON EXCHANGE
WOS研究方向Environmental Sciences & Ecology
WOS类目Environmental Sciences
语种英语
WOS记录号WOS:000463180700061
出版者ELSEVIER SCIENCE BV
URI标识http://www.irgrid.ac.cn/handle/1471x/2555506
专题寒区旱区环境与工程研究所
通讯作者Jin, Jiaxin
作者单位1.Hohai Univ, State Key Lab Hydrol Water Resources & Hydraul En, Nanjing, Jiangsu, Peoples R China
2.Hohai Univ, Sch Earth Sci & Engn, Nanjing, Jiangsu, Peoples R China
3.German Ctr Integrat Biodivers Res iDiv, D-04103 Leipzig, Germany
4.Max Planck Inst Biogeochem, Jena, Germany
5.Chinese Acad Sci, Chengdu Inst Biol, Chengdu, Sichuan, Peoples R China
6.Tsinghua Univ, Dept Earth Syst Sci, Beijing, Peoples R China
7.Chinese Acad Forestry, Inst Wetland Res, Beijing Key Lab Wetland Serv & Restorat, Beijing, Peoples R China
8.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou, Gansu, Peoples R China
9.Sanjiang Univ, Sch Culture Ind & Tourism Management, Nanjing, Jiangsu, Peoples R China
推荐引用方式
GB/T 7714		 Jin, Jiaxin,Ma, Xuanlong,Chen, Huai,et al. Grassland production in response to changes in biological metrics over the Tibetan Plateau[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2019,666:641-651.
APA Jin, Jiaxin.,Ma, Xuanlong.,Chen, Huai.,Wang, Han.,Kang, Xiaoming.,...&Guo, Fengsheng.(2019).Grassland production in response to changes in biological metrics over the Tibetan Plateau.SCIENCE OF THE TOTAL ENVIRONMENT,666,641-651.
MLA Jin, Jiaxin,et al."Grassland production in response to changes in biological metrics over the Tibetan Plateau".SCIENCE OF THE TOTAL ENVIRONMENT 666(2019):641-651.

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