Dynamics of aeolian desertification and its driving forces in the Horqin Sandy Land, Northern China (SCI)

CORC > 寒区旱区环境与工程研究所 > 中科院寒区旱区环境与工程研究所（未分类） > 期刊论文

	Dynamics of aeolian desertification and its driving forces in the Horqin Sandy Land, Northern China (SCI)
	Duan H. C. ; Wang T. ; Xue X. ; Liu S. L. ; Guo J.
刊名	Environmental Monitoring and Assessment
	2014
卷号	186 期号:10 页码:6083-6096
英文摘要	Aeolian desertification is one of the most serious environmental and socioeconomic problems in arid, semi-arid, and dry subhumid zones. Understanding desertification processes and causes is important to provide reasonable and effective control measures for preventing desertification. With satellite remote sensing images as data source to assess the temporal and spatial dynamics of desertification from 1975 to 2010 in the Horqin Sandy Land, dynamic changes of aeolian desertification were detected using the human-machine interactive interpretation method. The driving factors of local desertification were analyzed based on natural and socioeconomic data. The results show that aeolian desertified land in the study area covered 30,199 km(2) in 2010, accounting for 24.1 % of the study area. The total area of aeolian desertified land obviously expanded from 30,884 km(2) in 1975 to 32,071 km(2) in 1990, and gradually decreased to 30,199 km(2) in 2010; aeolian desertified land represented an increasing trend firstly and then decreased. During the past 35 years, the gravity centers of desertified lands that are classified as extremely severe and severe generally migrated to the northeast, whereas those that are moderate and slight migrated to the northwest. The migration distance of severely desertified land was the largest, which indicated the southern desertified lands were improved during the last few decades. In addition, the climatic variation in the past 35 years has been favorable to desertification in the Horqin Sandy Land. Aeolian desertified land rapidly expanded from 1975 to 1990 under the combined effects of climate changes and unreasonable human activities. After the 1990s, the main driving factors responsible for the decrease in desertification were positive human activities, such as the series of antidesertification and ecological restoration projects.
收录类别	SCI
公开日期	2015-12-24
内容类型	期刊论文
源URL	[http://ir.casnw.net/handle/362004/24800]
专题	寒区旱区环境与工程研究所_中科院寒区旱区环境与工程研究所（未分类）_期刊论文
推荐引用方式 GB/T 7714	Duan H. C.,Wang T.,Xue X.,et al. Dynamics of aeolian desertification and its driving forces in the Horqin Sandy Land, Northern China (SCI)[J]. Environmental Monitoring and Assessment,2014,186(10):6083-6096.
APA	Duan H. C.,Wang T.,Xue X.,Liu S. L.,&Guo J..(2014).Dynamics of aeolian desertification and its driving forces in the Horqin Sandy Land, Northern China (SCI).Environmental Monitoring and Assessment,186(10),6083-6096.
MLA	Duan H. C.,et al."Dynamics of aeolian desertification and its driving forces in the Horqin Sandy Land, Northern China (SCI)".Environmental Monitoring and Assessment 186.10(2014):6083-6096.