干旱区生态环境知识资源中心(Arid): Disentangling the relative impacts of climate change and human activities on arid and semiarid grasslands in Central Asia during 1982-2015

Arid

DOI	10.1016/j.scitotenv.2018.11.058
	Disentangling the relative impacts of climate change and human activities on arid and semiarid grasslands in Central Asia during 1982-2015
	Chen, Tao 1,2; Bao, Anming1 ; Jiapaer, Guli 1; Guo, Hao 1,2; Zheng, Guoxiong 1,2; Jiang, Liangliang 1,2; Chang, Cun 1; Tuerhanjiang, Latipa 1,3
通讯作者	Jiapaer, Guli
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2019
卷号	653 页码:1311-1325
英文摘要	In recent decades, climate change and human activities have severely affected grasslands in Central Asia. Grassland regulation and sustainability in this region require an accurate assessment of the effects of these two factors on grasslands. Based on the abrupt change analysis, linear regression analysis and net primary productivity (NPP), the spatiotemporal patterns of grassland ecosystems in Central Asia during 1982-2015 were studied. Further, the potential NPP (NPPP) was estimated using the Thornthwaite Memorial model and the human-induced NPP (NPPH), which was the difference between NPPP and actual NPP, were used to differentiate the effects of climate change and human activities on the grassland ecosystems, respectively. The grassland NPP showed a slight upward trend during 1982-2015, while two obvious decreasing periods were found before and after the mutation year 1999. Additionally, the main driving forces of the grassland NPP variation for the two periods were different. During 1982-1999, climate change was the main factor controlling grassland NPP increase or decrease, and 84.7% of grasslands experienced NPP reduction, while the regions experiencing an increase represented only 15.3% of the total area. During 1999-2015, the areas of increasing and decreasing grassland NPP represented 41.6% and 58.4% of the total area, respectively. After 1999, human activities became the main driving force of the NPP reduction, whereas climate change facilitated grassland restoration. The five Central Asian countries showed widely divergent relative impacts of climate change and human activities on NPP changes. In Uzbekistan and Turkmenistan, anthropogenic decreases in grassland NPP intensified during 1982-2015, while the negative anthropogenic effects on grassland NPP in Kyrgyzstan and Tajikistan moderated. Further analysis identified precipitation as the major climatic factor affecting grassland variation in most areas of Central Asia and overgrazing as the main form of human activity accelerating grassland degradation. This study improves the understanding of the relative impacts of climate change and human activities on grasslands in Central Asia. (c) 2018 Published by Elsevier B.V.
英文关键词	NPP Change-year detection Human activities Climate change Arid and semiarid grassland ecosystems
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000458626800128
WOS关键词	NET PRIMARY PRODUCTIVITY ; VEGETATION DYNAMICS ; HUMAN APPROPRIATION ; ANTHROPOGENIC ACTIVITIES ; TERRESTRIAL ECOSYSTEMS ; LAND DEGRADATION ; RIVER-BASIN ; SATELLITE ; CHINA ; VARIABILITY
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218632
作者单位	1.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830011, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 3.Chinese Acad Sci, Res Ctr Ecol & Environm Cent Asia, Urumqi 830011, Peoples R China
推荐引用方式 GB/T 7714	Chen, Tao,Bao, Anming,Jiapaer, Guli,et al. Disentangling the relative impacts of climate change and human activities on arid and semiarid grasslands in Central Asia during 1982-2015[J]. 中国科学院新疆生态与地理研究所,2019,653:1311-1325.
APA	Chen, Tao.,Bao, Anming.,Jiapaer, Guli.,Guo, Hao.,Zheng, Guoxiong.,...&Tuerhanjiang, Latipa.(2019).Disentangling the relative impacts of climate change and human activities on arid and semiarid grasslands in Central Asia during 1982-2015.SCIENCE OF THE TOTAL ENVIRONMENT,653,1311-1325.
MLA	Chen, Tao,et al."Disentangling the relative impacts of climate change and human activities on arid and semiarid grasslands in Central Asia during 1982-2015".SCIENCE OF THE TOTAL ENVIRONMENT 653(2019):1311-1325.