干旱区生态环境知识资源中心(Arid): 雅鲁藏布江曲水-乃东段沙化空间特征研究

Arid

	雅鲁藏布江曲水-乃东段沙化空间特征研究
其他题名	Spatial feature of desertification in Qushui-Naidong area of Yarlung Zangbo River
	赵银兵 1; 何政伟 2; 倪忠云 1; 南希 2; 赵勇 3
来源期刊	干旱区资源与环境
ISSN	1003-7578
出版年	2012
卷号	26 期号:8 页码:135-140
中文摘要	雅鲁藏布江曲水-乃东段地处"一江两河"核心区域,土地沙化对区域经济发展和生态安全造成重大影响。通过收集多源数据,采用RS、GIS和数理统计方法,研究沙化分布特点及驱动机理。结果表明:沙地分布呈现北重南轻、西重东轻的格局,总面积621km~2,占全区面积15%;沙化从轻度到极重度的面积大致呈现正态分布,极重度沙地面积95km~2,占沙地总面积的15%;重度沙地153km~2,占25%;中度沙地314km~2,占51%;轻度沙地58km2,占9%;近东西向断层破碎带成为沙地发育和发展主体;海拔≤4200m的沙地占沙地总面积98%,坡度≤15°的沙地占沙地总面积85%,平地及全阳坡沙地占沙地总面积的77%;极重度沙地的沟壑密度平均值达659m/km~2;近年来,雅鲁藏布江北岸及拉萨河东岸沙化大致维持扩散态势,与之隔河而望的区域因工程防治,沙化面积收缩。
英文摘要	The Qushui-Naidong area is located in the main region of watershed of the Yarlung Zangbo River,the Lhasa River,and the Nyang Qu River,and desertification there has been making a significant impact on regional economic development and ecological security.By collecting multi-source data,and using remote sensing and geographic information system technology,desertification distribution feature and driving mechanism were studied.The results showed that the desertification area accounted for 15% of the total area is about 621 km~2,its distribution pattern is severe in northern and light in southern,severe in western and light in eastern;The area from light desertification to extremely severe desertification generally expresses as a normal distribution,the extremely severe desertification area accounted for 15% of the total desertification area is about 95km~2;The severe area is about 153 km~2 which accounts for 25% of the total desertification area;The medium area is about 314 km~2 which accounts for 51%;the light is about 58 km~2 which accounts for 9%;The nearly east-west fault fracture zone is the main region of desertification development and growth;The sand land its altitude ≤4200m accounts for 98% of the total,the sand land its slope ≤15° accounts for 85%,and the flat and full sunny sand accounts for 77%;The average gully density in the extremely severe desertification area is 659m/km~2;In recent years,the desertification in the north bank of Yarlung Zangbo River and the east bank of the Lhasa River generally kept spread situation,but the desertification area of the other banks has been reducing because of project prevention.
中文关键词	地质环境 ; 全球变暖 ; 驱动力 ; 地理信息系统 ; 雅鲁藏布江
英文关键词	geological environment global warming driving force geographic information system Yarlung Zangbo River
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:4576297
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/228122
作者单位	1.成都理工大学旅游与城乡规划学院, 地质灾害防治与地质环境保护国家重点实验室, 成都, 四川 610059, 中国; 2.成都理工大学地球科学学院, 地质灾害防治与地质环境保护国家重点实验室, 成都, 四川 610059, 中国; 3.地质灾害防治与地质环境保护国家重点实验室, 地质灾害防治与地质环境保护国家重点实验室, 成都, 四川 610059, 中国
推荐引用方式 GB/T 7714	赵银兵,何政伟,倪忠云,等. 雅鲁藏布江曲水-乃东段沙化空间特征研究[J],2012,26(8):135-140.
APA	赵银兵,何政伟,倪忠云,南希,&赵勇.(2012).雅鲁藏布江曲水-乃东段沙化空间特征研究.干旱区资源与环境,26(8),135-140.
MLA	赵银兵,et al."雅鲁藏布江曲水-乃东段沙化空间特征研究".干旱区资源与环境 26.8(2012):135-140.