干旱区生态环境知识资源中心(Arid): 陕北长城沿线地区1986--2000年沙漠化动态变化分析

Arid

	陕北长城沿线地区1986--2000年沙漠化动态变化分析
其他题名	Analysis on Desertification Dynamics based on Remote Sensing and GIS in Zone along the Great Wall in Northern Shaanxi Province
	高小红; 王一谋; 王建华; 颜长珍; 李忠锋
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2005
卷号	25 期号:1 页码:63-67
中文摘要	以毛乌素沙地的东南缘部分----陕北长城沿线地区为研究区,以1986--2000年沙漠化动态数据为依据,分析了陕北长城沿线20世纪80年代中期到2000年沙地变化情况.结果表明:该地区14 a来沙漠化土地减少735.1 km2,局部处于稳定的逆转过程,沙地逆转以半固定沙地和半流动沙地为主.但耕地、草地和林地沙漠化仍非常严重,而且新增沙漠化土地中极重度沙漠化土地所占比例较大.近14 a来,沙漠化逆转的原因主要是人类采取了一系列积极的治理沙地措施和国家政策导向.但是由于人口的增加,滥垦、滥牧和滥樵的继续存在,及大规模煤矿资源开发和治理保护的不相协调,致使土地仍在发生沙漠化.
英文摘要	The study area, a part of the southern Mu Us Sandland, is located along the Great Wall in north-ern Shaanxi Province. Based on database of desertification dynamics from 1986 to 2000, the changes of the sandland were analyzed. The results show that the desertified land had decreased 735. 1 km2 from 1986 to 2000 and keep stable reversed situation as a whole. The reversed lands are mainly semi-fixed and semi-shift-ing sand lands. At the same time, the desertification of arable land, grassland and forest land became very severe. Further, the extremely severe decertified land covers the majority among the increased decertified lands. In the past 14 years, the reason of land desertification being reversed is that a series of positive sand-control measures and governmental policy have been adopted. Nevertheless, land resource is still in deserti-fication process because of unreasonable agricultural practices, heavy livestock grazing and firewood cutting, and the disharmony between coal-mine-resources exploitation and environmental protection.
中文关键词	沙漠化 ; 遥感和GIS ; 陕北长城沿线地区
英文关键词	sandy desertification remote sensing and GIS zone along the Great Wall in northern Shaanxi province
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURAL ECONOMICS POLICY
WOS研究方向	Agriculture
CSCD记录号	CSCD:1870812
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/2XILL650/206955
作者单位	中国科学院,寒区旱区环境与工程研究所, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	高小红,王一谋,王建华,等. 陕北长城沿线地区1986--2000年沙漠化动态变化分析[J]. 中国科学院西北生态环境资源研究院,2005,25(1):63-67.
APA	高小红,王一谋,王建华,颜长珍,&李忠锋.(2005).陕北长城沿线地区1986--2000年沙漠化动态变化分析.中国沙漠,25(1),63-67.
MLA	高小红,et al."陕北长城沿线地区1986--2000年沙漠化动态变化分析".中国沙漠 25.1(2005):63-67.