干旱区生态环境知识资源中心(Arid): 19752015年鄂尔多斯市沙漠化的时空演变过程

Arid

	19752015年鄂尔多斯市沙漠化的时空演变过程
其他题名	Spatial-temporal Evolution of Aeolian Desertification Process in Ordos City during 1975-2015
	冯坤 1; 颜长珍 2; 谢家丽 2; 钱大文 1
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2018
卷号	38 期号:2 页码:233-242
中文摘要	鄂尔多斯市地处温带草原向荒漠草原过渡的半干旱区,是中国沙漠化问题较为严重的区域之一,其土地沙漠化发展和逆转过程及影响因素在北方农牧交错带具有代表性。以7期Landsat卫星遥感数据为信息源提取沙漠化土地类型及程度的时空格局信息,分析了该地区自1975年以来的土地沙漠化过程,并结合气象及社会经济数据采用主成分分析法对驱动因子进行定量分析。结果表明:在脆弱生态环境背景下,鄂尔多斯市土地沙漠化受人口数量增加、过垦及过牧等人为因素的严重影响。不同时段土地沙漠化发展的方向与驱动力都有所不同,19752000年是土地沙漠化的急剧发展期,驱动力以人为因素为主导,自然因素为基础;20002015年是土地沙漠化的逆转期,驱动力以自然因素为主,人为因素为辅。
英文摘要	The Ordos City is located in the semi-arid region and also an ecotone from temperate steppe to desert steppe,and it suffers the serious aeolian desertification problems like the other parts of Northern China. Due to its representative and typical characteristics of the development and reversal process of aeolian desertification and its driving factors,Ordos City has become one of the hot areas of desertification research.We derives the spatial and temporal patterns change information of aeolian desertification from1975 to 2015 based on the Landsat images,and analyzed the driving factors with the principal component analysis(PCA) and meteorological and social-economic data.The results showed that in the context of the fragile ecological environment,the development of aeolian desertification in Ordos City in the forty years was mainly influenced by human factors,such as population increase,reclamation and overgrazing.The trend of land desertification and the dominant driving factors are different at different periods:The land desertification tended to deteriorate from1975 to 2000,and the main driving factors were human activities,followed by natural factors;The land desertification was reversed in 2000-2015,and the natural factors played more important role than human activity in this period.
中文关键词	沙漠化 ; 驱动力 ; 主成分分析 ; 鄂尔多斯市
英文关键词	aeolian desertification driving factor principal component analysis Ordos
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOSCIENCES MULTIDISCIPLINARY
WOS研究方向	Geology
CSCD记录号	CSCD:6213954
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/238747
作者单位	1.中国科学院西北生态环境资源研究院;;中国科学院大学, ;;, 兰州;;, 甘肃;;北京 730000;;100049, 中国; 2.中国科学院西北生态环境资源研究院, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	冯坤,颜长珍,谢家丽,等. 19752015年鄂尔多斯市沙漠化的时空演变过程[J]. 中国科学院西北生态环境资源研究院,2018,38(2):233-242.
APA	冯坤,颜长珍,谢家丽,&钱大文.(2018).19752015年鄂尔多斯市沙漠化的时空演变过程.中国沙漠,38(2),233-242.
MLA	冯坤,et al."19752015年鄂尔多斯市沙漠化的时空演变过程".中国沙漠 38.2(2018):233-242.