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Increasing sensitivity of alpine grasslands to climate variability along an elevational gradient on the Qinghai-Tibet Plateau

文献类型：期刊论文

作者Li, Lanhui2,3,4; Zhang, Yili2,3,4; Wu, Jianshuang5; Li, Shicheng6; Zhang, Binghua2,3; Zu, Jiaxing2,3; Zhang, Huamin1; Ding, Mingjun1; Paudel, Basanta2
刊名SCIENCE OF THE TOTAL ENVIRONMENT
出版日期2019-08-15
卷号678页码:21-29
关键词Alpine grassland Vegetation sensitivity index Climate variability Elevation Qinghai-Tibet Plateau
ISSN号0048-9697
DOI10.1016/j.scitotenv.2019.04.399
通讯作者Zhang, Yili(zhangyl@igsnrr.ac.cn)
英文摘要Monitoring and mapping the sensitivity of grassland ecosystems to climate change is crucial for developing sustainable local grassland management strategies. The sensitivity of alpine grasslands to climate change is considered to be high on the Qinghai-Tibet Plateau (QTP), yet little is known about its spatial pattern, and particularly the variations between different elevations. Here, based on the Normalized Difference Vegetation Index (NDVI) and three climate variables (air temperature, precipitation, and solar radiation), we modified a vegetation sensitivity index-approach to capture the relative sensitivity of alpine grassland productivity to climate variability on the QTP during 2000-2016. The results show that alpine grasslands on the southern QTP are more sensitive to climate variability overall, and that the climate factors driving alpine grassland dynamics are spatially heterogeneous. Alpine grasslands on the southern QTP are more sensitive to temperature variability, those on the northeastern QTP display strong responses to precipitation variability, and those on the central QTP are primarily influenced by a combination of radiation and temperature variability. The sensitivity of alpine grasslands to climate variability increases significantly along an elevational gradient, especially to temperature variability. This study underscores that alpine grasslands at higher elevations on the QTP are more sensitive to climate variability than those at lower elevations at the regional scale. (C) 2019 Elsevier B.V. All rights reserved.
WOS关键词NET PRIMARY PRODUCTION ; TEMPORAL VARIABILITY ; LAND-SURFACE ; VEGETATION ; TEMPERATURE ; PHENOLOGY ; ECOSYSTEMS ; RESPONSES ; CHINA ; PRECIPITATION
资助项目Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China[41671104] ; National Natural Science Foundation of China[41761144081] ; International Partnership Program of Chinese Academy of Sciences[131C11KYSB20160061]
WOS研究方向Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000468618900003
出版者ELSEVIER SCIENCE BV
资助机构Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; International Partnership Program of Chinese Academy of Sciences
源URL[http://ir.igsnrr.ac.cn/handle/311030/59275]  
专题中国科学院地理科学与资源研究所
通讯作者Zhang, Yili
作者单位1.Jiangxi Normal Univ, Sch Geog & Environm, Minist Educ, Key Lab Poyang Lake Wetland & Watershed Res, Nanchang 330028, Jiangxi, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
5.Free Univ Berlin, Inst Biol Biodivers Theoret Ecol, D-14195 Berlin, Germany
6.China Univ Geosci, Sch Publ Adm, Wuhan 430074, Hubei, Peoples R China
推荐引用方式
GB/T 7714		 Li, Lanhui,Zhang, Yili,Wu, Jianshuang,et al. Increasing sensitivity of alpine grasslands to climate variability along an elevational gradient on the Qinghai-Tibet Plateau[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2019,678:21-29.
APA Li, Lanhui.,Zhang, Yili.,Wu, Jianshuang.,Li, Shicheng.,Zhang, Binghua.,...&Paudel, Basanta.(2019).Increasing sensitivity of alpine grasslands to climate variability along an elevational gradient on the Qinghai-Tibet Plateau.SCIENCE OF THE TOTAL ENVIRONMENT,678,21-29.
MLA Li, Lanhui,et al."Increasing sensitivity of alpine grasslands to climate variability along an elevational gradient on the Qinghai-Tibet Plateau".SCIENCE OF THE TOTAL ENVIRONMENT 678(2019):21-29.

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来源：地理科学与资源研究所

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