气候变化领域集成服务门户(CCPortal): Dynamics of aeolian desertification and its driving forces in the Horqin Sandy Land, Northern China

CCPortal

DOI	10.1007/s10661-014-3841-3
	Dynamics of aeolian desertification and its driving forces in the Horqin Sandy Land, Northern China
	Duan, Han-chen; Wang, Tao; Xue, Xian; Liu, Shu-lin; Guo, Jian
发表日期	2014
ISSN	0167-6369
EISSN	1573-2959
卷号	186 期号:10
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.
关键词	Aeolian desertification Remote sensing Climate change Human activities Horqin Sandy Land
学科领域	Environmental Sciences & Ecology
语种	英语
WOS研究方向	Environmental Sciences
来源期刊	ENVIRONMENTAL MONITORING AND ASSESSMENT
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/111730
作者单位	Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Key Lab Desert & Desertificat, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Duan, Han-chen,Wang, Tao,Xue, Xian,et al. Dynamics of aeolian desertification and its driving forces in the Horqin Sandy Land, Northern China[J]. 中国科学院西北生态环境资源研究院,2014,186(10).
APA	Duan, Han-chen,Wang, Tao,Xue, Xian,Liu, Shu-lin,&Guo, Jian.(2014).Dynamics of aeolian desertification and its driving forces in the Horqin Sandy Land, Northern China.ENVIRONMENTAL MONITORING AND ASSESSMENT,186(10).
MLA	Duan, Han-chen,et al."Dynamics of aeolian desertification and its driving forces in the Horqin Sandy Land, Northern China".ENVIRONMENTAL MONITORING AND ASSESSMENT 186.10(2014).