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

doi:10.1016/j.scitotenv.2019.02.293

CORC > 成都生物研究所 > 中国科学院成都生物研究所 > 生物多样性与生态系统服务领域 > 生态研究

	Grassland production in response to changes in biological metrics over the Tibetan Plateau
	Jin, Jiaxin 2,3; Ma, Xuanlong 4,5; Chen, Huai 6; Wang, Han 1; Kang, Xiaoming 9; Wang, Xufeng 8; Wang, Ying 7; Yong, Bin 2,3; Guo, Fengsheng 3
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2019
卷号	666 页码:641-651
关键词	Biological regulation Phonology Grassland The Tibetan Plateau Remote sensing
ISSN号	0048-9697
DOI	10.1016/j.scitotenv.2019.02.293
产权排序	5
文献子类	Article
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.
学科主题	Environment/ecology
URL标识	查看原文
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
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000463180700061
内容类型	期刊论文
源URL	[http://210.75.237.14/handle/351003/30527]
专题	生物多样性与生态系统服务领域_生态研究
作者单位	1.Tsinghua Univ, Dept Earth Syst Sci, Beijing, Peoples R China; 2.Hohai Univ, State Key Lab Hydrol Water Resources & Hydraul En, Nanjing, Jiangsu, Peoples R China; 3.Hohai Univ, Sch Earth Sci & Engn, Nanjing, Jiangsu, Peoples R China; 4.German Ctr Integrat Biodivers Res iDiv, D-04103 Leipzig, Germany; 5.Max Planck Inst Biogeochem, Jena, Germany; 6.Chinese Acad Sci, Chengdu Inst Biol, Chengdu, Sichuan, Peoples R China; 7.Sanjiang Univ, Sch Culture Ind & Tourism Management, Nanjing, Jiangsu, Peoples R China 8.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou, Gansu, Peoples R China; 9.Chinese Acad Forestry, Inst Wetland Res, Beijing Key Lab Wetland Serv & Restorat, Beijing, 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.