干旱区生态环境知识资源中心(Arid): China's oases have expanded by nearly 40% over the past 20 years

Arid

DOI	10.1002/ldr.4425
	China's oases have expanded by nearly 40% over the past 20 years
	Liu, Xiaoyu; Wang, Yujing; Xin, Liangjie
通讯作者	Xin, LJ
来源期刊	LAND DEGRADATION & DEVELOPMENT
ISSN	1085-3278
EISSN	1099-145X
出版年	2022
卷号	33 期号:18 页码:3817-3828
英文摘要	Oases are supporters of biological, social, and economic activities in arid regions, which guides their prosperity or decay. Given that China has the largest oases area in the world, determining their evolution is of substantial importance for sustainable development and the ecological protection of these systems. Accordingly, the spatiotemporal evolution of China's oases between 2000 and 2020 was analyzed. This was based on the normalized difference vegetation index derived from moderate imaging spectroradiometer data, combined with superpixel image segmentation, the region adjacency graph merging method, and the genetic algorithm. The results were as follows. Between 2000 and 2020: (1) the oases in China expanded significantly from 207,812 to 289,751 km(2); with a total increase of 39.43%; and the number of oases decreased from 135 to 93, which mainly occurred in micro and small oases; (2) the areas of oases in stable, expanding, and shrinking states accounted for 96.77%, 42.65%, and respectively 3.23% of the total oasis area in 2000. Oases have become more concentrated and continuously expanded; (3) the increase in glacial meltwater and precipitation caused by rising temperatures increased the availability of water resources in oases, which provides the substantial basis for expansion; and (4) the primary anthropogenic drivers of oasis expansion and stabilization regions were cultivation and construction, respectively.
英文关键词	2000-2020 China climate change human activities oases expansion remote sensing
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000849691500001
WOS类目	Environmental Sciences ; Soil Science
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/393733
推荐引用方式 GB/T 7714	Liu, Xiaoyu,Wang, Yujing,Xin, Liangjie. China's oases have expanded by nearly 40% over the past 20 years[J],2022,33(18):3817-3828.
APA	Liu, Xiaoyu,Wang, Yujing,&Xin, Liangjie.(2022).China's oases have expanded by nearly 40% over the past 20 years.LAND DEGRADATION & DEVELOPMENT,33(18),3817-3828.
MLA	Liu, Xiaoyu,et al."China's oases have expanded by nearly 40% over the past 20 years".LAND DEGRADATION & DEVELOPMENT 33.18(2022):3817-3828.