干旱区生态环境知识资源中心(Arid): Grassland dynamics in responses to climate variation and human activities in China from 2000 to 2013

Arid

DOI	10.1016/j.scitotenv.2019.06.503
	Grassland dynamics in responses to climate variation and human activities in China from 2000 to 2013
	Liu, Yangyang 1; Wang, Qian 1; Zhang, Zhaoying 2; Tong, Linjing 1; Wang, Zhenqian 3; Li, Jianlong 1
通讯作者	Zhang, Zhaoying ; Li, Jianlong
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2019
卷号	690 页码:27-39
英文摘要	Improving our understanding of the impacts of climate variation and human activities on grassland dynamics is heightened by expectations that climate variation and human activities may induce grassland degradation. An accurate evaluation of the respective impacts of climate variation and human activities on grassland dynamics is crucial to understand the grassland degradation mechanism and to control the degraded grassland. In this study, net primary productivity (NPP) was selected as an indicator to reflect grassland dynamics. Meanwhile, the potential NPP (PNPP) and human-induced NPP (HNPP) calculated as the difference of PNPP and actual ANPP (ANPP) were used to assess the relative effects of climate variation and human activities on grassland NPP changes in China during 2000-2013. Results of grassland ANPP showed an overall increase than decrease in productivity (81.21% vs 18.79%) from 2000 to 2013. For the increase of ANPP, the relative contribution of climate variation and human activities to grassland NPP changes were 41.45% and 45.22%, respectively. Climate variation was the dominant factor that induced the increase in ANPP mainly in areas of Sichuan, Gansu, Ningxia and Inner Mongolia. An increase in Human-dominated ANPP mainly occurred in Tibet, Qinghai and Xinjiang. The decrease in ANPP is principally controlled by the effect of human activities than that of climate variation, especially in Inner Mongolia. Meanwhile, climate-dominated ANPP increase and human-dominated ANPP decrease mainly occurred in plain grassland, desert grassland and meadow across the six types of grasslands in China. Furthermore, in alpine sub-alpine meadow and alpine sub-alpine, while climate-dominated ANPP of grassland was found to be decreased, an increase in human-dominated ANPP was detected. The increase in precipitation and the implementation of ecological restoration programs were found to be effective in inducing the noticeable increased grassland ANPP since 2003. The findings of the current research recommend that the Chinese government should continue to implement the prohibiting graze policy across the country and extensively strengthen the implementation of the policy in Inner Mongolia and North Xinjiang, particularly in plain grassland, desert grassland and meadow. (C) 2019 Elsevier B.V. All rights reserved.
英文关键词	Climate variation Grassland dynamics Human activities Net primary productivity (NPP) Quantitative assessment
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000482549900004
WOS关键词	NET PRIMARY PRODUCTION ; QINGHAI-TIBET PLATEAU ; PRIMARY PRODUCTIVITY ; QUANTITATIVE ASSESSMENT ; LAND DEGRADATION ; USE EFFICIENCY ; ANTHROPOGENIC ACTIVITIES ; CARBON SEQUESTRATION ; SEMIARID GRASSLANDS ; HUMAN APPROPRIATION
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
EI主题词	2019-11-10
来源机构	兰州大学 ; 南京大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310807
作者单位	1.Nanjing Univ, Sch Life Sci, Dept Ecol, Nanjing 210093, Jiangsu, Peoples R China; 2.Nanjing Univ, Jiangsu Prov Key Lab Geog Informat Sci & Technol, Int Inst Earth Syst Sci, Nanjing 210023, Jiangsu, Peoples R China; 3.Lanzhou Univ, Sch Earth Sci, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Liu, Yangyang,Wang, Qian,Zhang, Zhaoying,et al. Grassland dynamics in responses to climate variation and human activities in China from 2000 to 2013[J]. 兰州大学, 南京大学,2019,690:27-39.
APA	Liu, Yangyang,Wang, Qian,Zhang, Zhaoying,Tong, Linjing,Wang, Zhenqian,&Li, Jianlong.(2019).Grassland dynamics in responses to climate variation and human activities in China from 2000 to 2013.SCIENCE OF THE TOTAL ENVIRONMENT,690,27-39.
MLA	Liu, Yangyang,et al."Grassland dynamics in responses to climate variation and human activities in China from 2000 to 2013".SCIENCE OF THE TOTAL ENVIRONMENT 690(2019):27-39.