干旱区生态环境知识资源中心(Arid): Study on dynamic changes of land desertification in the circum-lake zone of the Qinghai Lake in the past 30 years supported by Remote Sensing and Geographical Information System

Arid

	Study on dynamic changes of land desertification in the circum-lake zone of the Qinghai Lake in the past 30 years supported by Remote Sensing and Geographical Information System
	Hu Mengjun; Zhang Wenli; Yang Aili; Tian Lihui; Zhang Dengshan
来源期刊	Sciences in Cold and Arid Regions
ISSN	1674-3822
出版年	2014
卷号	6 期号:6 页码:566-576
英文摘要	The circum-lake zone of the Qinghai Lake is one of the most serious regions of desertification on the Qinghai-Tibetan Plateau. Based on Remote Sensing (RS) and Geographical Information System (GIS) techniques, the four sets of remote sensing images acquired in 1976, 1987, 1995, and 2006 were selected to conduct thematic information extraction in 14,300 km2 of land in the circum-lake zone using the Earth Resource Data Analysis System (ERDAS) image and information processing function. In the meantime the off-site interpretation and filed check-correction methods were used to reconstruct the temporal-spatial dynamic changes and differentiation patterns of land desertification in the circum-lake zone in the past 30 years, and based on this, the developmental trend of land desertification in the next 20 years was predicted. The results of the study show that in the past 30 years land desertification in the region experienced a continuous fluctuation between rapid- and slow-development processes in time, while in space it exhibited a few small patchy distributions or sporadic distributions in many places while at the same time, four large sand-dominated distributions stood out and evolved into a circum-lake belt differentiation pattern with a lakeside dike as the connecting line. Due to the integrated effects of climate changes, human activities and artificial rehabilitation, land desertification area in the region in the next 20 years will exhibit an increasing trend in the first 15 years and then increase at a slower rate, and afterward occur in a reverse, decreasing trend.
英文关键词	Qinghai Lake land desertification dynamic change RS GIS
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Science & Technology - Other Topics
CSCD记录号	CSCD:5281267
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335421
作者单位	Hu Mengjun, College of Geography and Environment Science, Northwest Normal University, Lanzhou, Gansu China.; Zhang Wenli, College of Geography and Environment Science, Northwest Normal University, Lanzhou, Gansu China.; Yang Aili, College of Geography and Environment Science, Northwest Normal University, Lanzhou, Gansu China.; Tian Lihui, Beijing Normal University, Ministry of Education Key Laboratory of Environmental Change and Natural Disaster, Beijing 100875, China.; Zhang Dengshan, Beijing Normal University, Ministry of Education Key Laboratory of Environmental Change and Natural Disaster, Beijing 100875, China.
推荐引用方式 GB/T 7714	Hu Mengjun,Zhang Wenli,Yang Aili,et al. Study on dynamic changes of land desertification in the circum-lake zone of the Qinghai Lake in the past 30 years supported by Remote Sensing and Geographical Information System[J],2014,6(6):566-576.
APA	Hu Mengjun,Zhang Wenli,Yang Aili,Tian Lihui,&Zhang Dengshan.(2014).Study on dynamic changes of land desertification in the circum-lake zone of the Qinghai Lake in the past 30 years supported by Remote Sensing and Geographical Information System.Sciences in Cold and Arid Regions,6(6),566-576.
MLA	Hu Mengjun,et al."Study on dynamic changes of land desertification in the circum-lake zone of the Qinghai Lake in the past 30 years supported by Remote Sensing and Geographical Information System".Sciences in Cold and Arid Regions 6.6(2014):566-576.