IGSNRR OpenIR
Disentangling climatic and anthropogenic contributions to nonlinear dynamics of alpine grassland productivity on the Qinghai-Tibetan Plateau
Wu, Jianshuang1,2; Li, Meng3,4; Zhang, Xianzhou3; Fiedler, Sebastian2,5,9; Gao, Qingzhu1; Zhou, Yuting6; Cao, Wenfang1,7; Hassan, Waseem1; Ciprian, Mihai8; Tarolli, Paolo7; Tietjen, Britta2,9
2021-03-01
Source PublicationJOURNAL OF ENVIRONMENTAL MANAGEMENT
ISSN0301-4797
Volume281Pages:10
Corresponding AuthorWu, Jianshuang(wujianshuang@caas.cn)
AbstractAlpine 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.
KeywordAnthropogenic impacts Climate fluctuations Ecosystem non-linearity Grassland productivity Human disturbance Vegetation dynamics
DOI10.1016/j.jenvman.2020.111875
Indexed BySCI
Language英语
Funding ProjectAlexander von Humboldt Foundation ; Chinese Academy of Agricultural Sciences ; Second Tibetan Plateau Scientific Expedition and Research (STEP)[2019QZKK1002] ; German Research Foundation (DFG)[TI 824/3-1]
Funding OrganizationAlexander von Humboldt Foundation ; Chinese Academy of Agricultural Sciences ; Second Tibetan Plateau Scientific Expedition and Research (STEP) ; German Research Foundation (DFG)
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000618047500003
PublisherACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/160654
Collection中国科学院地理科学与资源研究所
Corresponding AuthorWu, Jianshuang
Affiliation1.Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, Beijing 100081, Peoples R China
2.Free Univ Berlin, Inst Biol, Theoret Ecol, D-14195 Berlin, Germany
3.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
4.Nantong Univ, Sch Geog Sci, Nantong 226007, Jiangsu, Peoples R China
5.Univ Bayreuth, Dept Ecol Modelling, D-95448 Bayreuth, Germany
6.Oklahoma State Univ, Dept Geog, Stillwater, OK 74078 USA
7.Univ Padua, Dept Land Environm Agr & Forestry, I-35020 Legnaro, PD, Italy
8.Alexandru Ioan Cuza Univ, Geog & Geol Fac, Dept Geog, Iasi 700505, Romania
9.Berlin Brandenburg Inst Adv Biodivers Res, D-14195 Berlin, Germany
Recommended Citation
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]. JOURNAL OF ENVIRONMENTAL MANAGEMENT,2021,281:10.
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,281,10.
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):10.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Wu, Jianshuang]'s Articles
[Li, Meng]'s Articles
[Zhang, Xianzhou]'s Articles
Baidu academic
Similar articles in Baidu academic
[Wu, Jianshuang]'s Articles
[Li, Meng]'s Articles
[Zhang, Xianzhou]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Wu, Jianshuang]'s Articles
[Li, Meng]'s Articles
[Zhang, Xianzhou]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.