干旱区生态环境知识资源中心(Arid): Disentangling climatic and anthropogenic contributions to nonlinear dynamics of alpine grassland productivity on the Qinghai-Tibetan Plateau

Arid

DOI	10.1016/j.jenvman.2020.111875
	Disentangling climatic and anthropogenic contributions to nonlinear dynamics of alpine grassland productivity on the Qinghai-Tibetan Plateau
	Wu, Jianshuang; Li, Meng; Zhang, Xianzhou; Fiedler, Sebastian; Gao, Qingzhu; Zhou, Yuting; Cao, Wenfang; Hassan, Waseem; Margarint, Mihai Ciprian; Tarolli, Paolo; Tietjen, Britta
通讯作者	Wu, JS (corresponding author), Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, Beijing 100081, Peoples R China.
来源期刊	JOURNAL OF ENVIRONMENTAL MANAGEMENT
ISSN	0301-4797
EISSN	1095-8630
出版年	2021
卷号	281
英文摘要	Alpine grasslands on the Qinghai-Tibetan Plateau are sensitive and vulnerable to climate change and human activities. Climate warming and overgrazing have already caused degradation in a large fraction of alpine grasslands on this plateau. However, it remains unclear how human activities (mainly livestock grazing) regulates vegetation dynamics under climate change. Here, alpine grassland productivity (substituted with the normalized difference vegetation index, NDVI) is hypothesized to vary in a nonlinear trajectory to follow climate fluctuations and human disturbances. With generalized additive mixed modelling (GAMM) and residual-trend (RESTREND) analysis together, both magnitude and direction of climatic (in terms of temperature, precipitation, and radiation) and anthropogenic impacts on NDVI variation were examined across alpine meadows, steppes, and desert-steppes on the Qinghai-Tibetan Plateau. The results revealed that accelerating warming and greening, respectively, took place in 76.2% and 78.8% of alpine grasslands on the Qinghai-Tibetan Plateau. The relative importance of temperature, precipitation, and radiation impacts was comparable, between 20.4% and 24.8%, and combined to explain 66.2% of NDVI variance at the pixel scale. The human influence was strengthening and weakening, respectively, in 15.5% and 14.3% of grassland pixels, being slightly larger than any sole climatic variable across the entire plateau. Anthropogenic and climatic factors can be in opposite ways to affect alpine grasslands, even within the same grassland type, likely regulated by plant community assembly and species functional traits. Therefore, the underlying mechanisms of how plant functional diversity regulates nonlinear ecosystem response to climatic and anthropogenic stresses should be carefully explored in the future.
英文关键词	Anthropogenic impacts Climate fluctuations Ecosystem non-linearity Grassland productivity Human disturbance Vegetation dynamics
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000618047500003
WOS关键词	TIME-SERIES SEGMENTATION ; ECOSYSTEM SERVICES ; GRAZING EXCLUSION ; VEGETATION DYNAMICS ; LAND DEGRADATION ; SOIL PROPERTIES ; CHANGE IMPACTS ; BIODIVERSITY ; PLANT ; PRECIPITATION
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	中国科学院地理科学与资源研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/350789
作者单位	[Wu, Jianshuang; Gao, Qingzhu; Cao, Wenfang; Hassan, Waseem] Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, Beijing 100081, Peoples R China; [Wu, Jianshuang; Fiedler, Sebastian; Tietjen, Britta] Free Univ Berlin, Inst Biol, Theoret Ecol, D-14195 Berlin, Germany; [Li, Meng; Zhang, Xianzhou] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modelling, Lhasa Natl Ecol Res Stn, Beijing 100101, Peoples R China; [Li, Meng] Nantong Univ, Sch Geog Sci, Nantong 226007, Jiangsu, Peoples R China; [Fiedler, Sebastian] Univ Bayreuth, Dept Ecol Modelling, D-95448 Bayreuth, Germany; [Zhou, Yuting] Oklahoma State Univ, Dept Geog, Stillwater, OK 74078 USA; [Cao, Wenfang; Tarolli, Paolo] Univ Padua, Dept Land Environm Agr & Forestry, I-35020 Legnaro, PD, Italy; [Margarint, Mihai Ciprian] Alexandru Ioan Cuza Univ, Geog & Geol Fac, Dept Geog, Iasi 700505, Romania; [Fiedler, Sebastian; Tietjen, Britta] Berlin Brandenburg Inst Adv Biodivers Res, D-14195 Berlin, Germany
推荐引用方式 GB/T 7714	Wu, Jianshuang,Li, Meng,Zhang, Xianzhou,et al. Disentangling climatic and anthropogenic contributions to nonlinear dynamics of alpine grassland productivity on the Qinghai-Tibetan Plateau[J]. 中国科学院地理科学与资源研究所,2021,281.
APA	Wu, Jianshuang.,Li, Meng.,Zhang, Xianzhou.,Fiedler, Sebastian.,Gao, Qingzhu.,...&Tietjen, Britta.(2021).Disentangling climatic and anthropogenic contributions to nonlinear dynamics of alpine grassland productivity on the Qinghai-Tibetan Plateau.JOURNAL OF ENVIRONMENTAL MANAGEMENT,281.
MLA	Wu, Jianshuang,et al."Disentangling climatic and anthropogenic contributions to nonlinear dynamics of alpine grassland productivity on the Qinghai-Tibetan Plateau".JOURNAL OF ENVIRONMENTAL MANAGEMENT 281(2021).