干旱区生态环境知识资源中心(Arid): Dynamic of Grassland Degradation and Its Driving Forces from Climate Variation and Human Activities in Central Asia

Arid

DOI	10.3390/agronomy13112763
	Dynamic of Grassland Degradation and Its Driving Forces from Climate Variation and Human Activities in Central Asia
	Yang, Yue; Xu, Mengjia; Sun, Jie; Qiu, Jie; Pei, Wenming; Zhang, Kun; Xu, Xiaojuan; Liu, Dong
通讯作者	Liu, D
来源期刊	AGRONOMY-BASEL
EISSN	2073-4395
出版年	2023
卷号	13 期号:11
英文摘要	Central Asia is one of the most sensitive regions to climate changes in the world and the grassland degradation of this region has attracted considerable concern. Quantifying the driving force of grassland degradation is important for understanding the effects of climate variation and human activities on grassland. In this study, net primary productivity (NPP) was selected as an indicator to quantitatively evaluate the relative role of climate variation and human activities in Central Asia from 2000 to 2020. This study used the global NPP product MOD17A3 as actual NPP and estimated the potential NPP using the Thornthwaite memorial model. The potential NPP and the difference between the potential NPP and actual NPP were used to represent the influence of climate variation and human activities. The grassland degradation or restoration can be demonstrated by the slope of actual NPP (SA). A positive slope value (SA) suggested that restoration occurs, whereas a negative slope value suggested that degradation occurred. The results showed that 23.08% of the total grassland area experienced grassland degradation, whereas 2.51% of the whole grassland underwent grassland restoration. Furthermore, 53.8% of the degraded grassland areas were influenced by climate variation, and 14.5% were caused by human activities. By contrast, the relative roles of climate variation and human activities in grassland restoration were 25% and 47.9%, respectively. The NPP variation also could be calculated by assessing the effects of these factors and the results showed that 55.7% of the NPP decrease was caused by climate variation, whereas 9.6% was a result of human activities. On the contrary, climate variation and human activities resulted in 19.8% and 37.3% of grassland restoration, respectively. Therefore, climate variation was the dominant factor of grassland degradation, and human activities were the main driver of grassland restoration in Central Asia.
英文关键词	grassland degradation net primary productivity (NPP) climate variation human activities quantitative assessment
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001107839700001
WOS关键词	NET PRIMARY PRODUCTIVITY ; QUANTITATIVE ASSESSMENT ; LAND DEGRADATION ; HUMAN APPROPRIATION ; VEGETATION GROWTH ; RELATIVE ROLE ; DESERTIFICATION ; CHINA ; COVER ; DROUGHT
WOS类目	Agronomy ; Plant Sciences
WOS研究方向	Agriculture ; Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395253
推荐引用方式 GB/T 7714	Yang, Yue,Xu, Mengjia,Sun, Jie,et al. Dynamic of Grassland Degradation and Its Driving Forces from Climate Variation and Human Activities in Central Asia[J],2023,13(11).
APA	Yang, Yue.,Xu, Mengjia.,Sun, Jie.,Qiu, Jie.,Pei, Wenming.,...&Liu, Dong.(2023).Dynamic of Grassland Degradation and Its Driving Forces from Climate Variation and Human Activities in Central Asia.AGRONOMY-BASEL,13(11).
MLA	Yang, Yue,et al."Dynamic of Grassland Degradation and Its Driving Forces from Climate Variation and Human Activities in Central Asia".AGRONOMY-BASEL 13.11(2023).