干旱区生态环境知识资源中心(Arid): Land use significantly improved grassland degradation and desertification states in China over the last two decades

Arid

DOI	10.1016/j.jenvman.2023.119419
	Land use significantly improved grassland degradation and desertification states in China over the last two decades
	Zhao, Yanbo; Chang, Chuchen; Zhou, Xiaoli; Zhang, Geli; Wang, Jie
通讯作者	Wang, J
来源期刊	JOURNAL OF ENVIRONMENTAL MANAGEMENT
ISSN	0301-4797
EISSN	1095-8630
出版年	2024
卷号	349
英文摘要	China possesses extensive grasslands primarily located in dryland regions, which are highly susceptible and fragile to climate change and human intervention, making them prone to degradation and desertification. In recent decades, China has implemented numerous ecological projects to improve the states of ecosystems. Additionally, recent studies have revealed the critical roles of rising CO2 on dryland greening. However, it is still limited to understand the contributions of anthropogenic recovery and CO2 fertilization, as well as other climate factors, to the dynamics of grassland degradation and desertification in China. To address these gaps, we employed a two-step approach to differentiate between grassland degradation and desertification as distinct processes across the grasslands and sparsely vegetated lands in China. This involved assessing degradation within existing grassland areas and identifying the conversion of grasslands into desert regions. The study period of 2000-2020 was examined to determine the occurrence of grassland desertification, which suggested a significant decrease in the desertification area in China. Subsequently, the time series of the Enhanced Vegetation Index (EVI) during the growing season was analyzed to track vegetation dynamics. Since the beginning of the 21st century, a significant greening trend has been observed in approximately 97% of the study area. Furthermore, we quantified the effects of anthropogenic climate change (ACC), climate change, and land use change on grassland degradation and desertification in China. The analyses indicated that 50.7% of the observed vegetation changes in the study area from 2000 to 2020 were primarily driven by land use, followed by the effects of rising CO2, accounting for 42.1% of the changes. These findings provided some insights on developing regionally-targeted strategies for grassland conservation in China.
英文关键词	Dryland greening Land degradation Land cover Vegetation index Spatiotemporal analysis
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001105985500001
WOS关键词	QUANTITATIVE ASSESSMENT ; SEMIARID ECOSYSTEMS ; VEGETATION DYNAMICS ; CLIMATE-CHANGE ; VARIABILITY ; GREENNESS ; FORESTS ; TREND
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/404442
推荐引用方式 GB/T 7714	Zhao, Yanbo,Chang, Chuchen,Zhou, Xiaoli,et al. Land use significantly improved grassland degradation and desertification states in China over the last two decades[J],2024,349.
APA	Zhao, Yanbo,Chang, Chuchen,Zhou, Xiaoli,Zhang, Geli,&Wang, Jie.(2024).Land use significantly improved grassland degradation and desertification states in China over the last two decades.JOURNAL OF ENVIRONMENTAL MANAGEMENT,349.
MLA	Zhao, Yanbo,et al."Land use significantly improved grassland degradation and desertification states in China over the last two decades".JOURNAL OF ENVIRONMENTAL MANAGEMENT 349(2024).