Climate Variability Rather Than Livestock Grazing Dominates Changes in Alpine Grassland Productivity Across Tibet

doi:10.3389/fevo.2021.631024

	Climate Variability Rather Than Livestock Grazing Dominates Changes in Alpine Grassland Productivity Across Tibet
	Li, Meng 2; Wu, Jianshuang 3,4; Feng, Yunfei 1; Niu, Ben 5; He, Yongtao 5; Zhang, Xianzhou 5
刊名	FRONTIERS IN ECOLOGY AND EVOLUTION
	2021-03-08
卷号	9 页码:12
关键词	climate change grassland degradation human activities NPP Tibetan Plateau
ISSN号	2296-701X
DOI	10.3389/fevo.2021.631024
通讯作者	Wu, Jianshuang(wujianshuang@caas.cn)
英文摘要	Alpine grasslands on the Tibetan Plateau, being vulnerable to environmental and anthropogenic changes, have experienced dramatic climate change and intensive livestock grazing during the last half-century. Climate change, coupled with grazing activities, has profoundly altered alpine grassland function and structure and resulted in vast grassland degradation. To restore degraded grasslands, the Central Government of China has implemented the Ecological Security Barrier Protection and Construction Project since 2008 across the Tibetan Autonomous Region. However, the relative effect of climate change and grazing activities on the variation in alpine grassland productivity is still under debate. In this study, we quantified how aboveground net primary production (ANPP) varied before (2000-2008) and after (2009-2017) starting the project across different alpine grasslands and how much variance in ANPP could be attributed to climate change and grazing disturbance, in terms of temperature, precipitation, solar radiation, and grazing intensity. Our results revealed that Tibet's climate got warmer and wetter, and grazing intensity decreased after starting the project. Mean ANPP increased at approximately 81% of the sites, on average from 27.0 g C m(-2) during 2000-2008 to 28.4 g C m(-2) during 2009-2017. The ANPP positively correlated with annual temperature and precipitation, but negatively with grazing intensity for both periods. Random forest modeling indicated that grazing intensity (14.5%) had a much lower influence in controlling the dynamics of grassland ANPP than precipitation (29.0%), suggesting that precipitation variability was the key factor for alpine grassland ANPP increase across Tibet.
资助项目	Second Tibetan Plateau Scientific Expedition and Research (STEP) program[2019QZKK1002] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA19050502] ; Alexander von Humboldt Foundation ; Young Talent Scientist Program of the Chinese Academy of Agricultural Sciences
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	FRONTIERS MEDIA SA
WOS记录号	WOS:000631067900001
资助机构	Second Tibetan Plateau Scientific Expedition and Research (STEP) program ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Alexander von Humboldt Foundation ; Young Talent Scientist Program of the Chinese Academy of Agricultural Sciences
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/160451]
专题	中国科学院地理科学与资源研究所
通讯作者	Wu, Jianshuang
作者单位	1.Tangshan Normal Univ, Dept Resource Management, Tangshan, Peoples R China 2.Nantong Univ, Sch Geog Sci, Nantong, Peoples R China 3.Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, Beijing, Peoples R China 4.Free Univ Berlin, Theoret Ecol, Inst Biol, Berlin, Germany 5.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Lhasa Natl Ecol Res Stn, Key Lab Ecosyst Network Observat & Modelling, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Li, Meng,Wu, Jianshuang,Feng, Yunfei,et al. Climate Variability Rather Than Livestock Grazing Dominates Changes in Alpine Grassland Productivity Across Tibet[J]. FRONTIERS IN ECOLOGY AND EVOLUTION,2021,9:12.
APA	Li, Meng,Wu, Jianshuang,Feng, Yunfei,Niu, Ben,He, Yongtao,&Zhang, Xianzhou.(2021).Climate Variability Rather Than Livestock Grazing Dominates Changes in Alpine Grassland Productivity Across Tibet.FRONTIERS IN ECOLOGY AND EVOLUTION,9,12.
MLA	Li, Meng,et al."Climate Variability Rather Than Livestock Grazing Dominates Changes in Alpine Grassland Productivity Across Tibet".FRONTIERS IN ECOLOGY AND EVOLUTION 9(2021):12.