干旱区生态环境知识资源中心(Arid): 中国北方沙漠化土地时空演变分析

Arid

	中国北方沙漠化土地时空演变分析
其他题名	Time-space Evolution of Desertification Land in Northern China
	王涛; 吴薇; 薛娴; 张伟民; 韩致文; 孙庆伟
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2003
卷号	23 期号:3 页码:230-235
中文摘要	对2000年中国北方25610^4km^2区域内沙漠化土地的遥感监测结果表明：沙漠化土地总面积现已达到38．5710^4km^2，其中轻度和潜在沙漠化土地13．9310^4km^2，占沙漠化土地面积的36.1％；中度沙漠化土地9．97710^4km^4，占25．9％；重度沙漠化土地7．如910^4km^2，占20．5％；严重沙漠化土地面积6．75610^4km^2，占17．5％。与20世纪50年代后期到70年代中期和80年代后期的沙漠化土地发展状况相比，目前我国沙漠化土地演变趋势具以下特征：(1)沙漠化土地仍在蔓延，面积已由1987年的33．89510^4km^2增加到了2000年的38．56910^4km^4，13a中净增4．674*10^4km^2；(2)沙漠化土地继续呈加速发展的趋势，年平均发展速率从20世纪50年代后期到70年代中期的1560km^2、70年代中期到80年代后期的2100km^2发展到90年代的3600km^2；(3)部分旱农区以及农牧交错地区沙漠化土地出现明显逆转，但荒漠草原地区沙漠化土地面积继续扩大，并且程度有所加剧。
英文摘要	It was disclosed by former researches that the desertification land in northern China developed at rate of 1 560 km2 per year from late of 1950s to middle of 1970s, and till late of 1970s the already desertified land had reached 17. 6 * 104 km2, the light degree and potential desertification lands had reached 15. 8 104 km2; During the following ten years the developing rate was up to 2 100 km2 per year, and till late of 1980s the already desertified land had reached 33. 3 x 10* km2. In order to further disclose the status and developing trend of desertification land in China from then on and provide dependable bases for the strategy making of desertification control, another field investigation and monitoring with remote sensing to the desertification status in 256 x 104 km2 area of Northern China was conducted in 2000. The results showed that the total desertified land area had increased to 38. 576 * 104 km2 from 33. 895 * 104 km2 in 1987 , among which the light degree and potential desertification land was 13.93 * 104 km2, occupied 36.1% of the total; the middle degree was 9.977 * 104 km2, occupied 25. 9% ; the serious was 7.907 104 km2, occupied 20.51% ; the very serious was 6.756 10 km , occupied 17. 5%. The developing rate of desertification land was further raised to 3 500 km per year during 1990s. In details, although the desertification in part of agricultural and agro-pastoral areas inversed distinctly, the area of desertification land in desert steppe and steppe desert continuously extended and the degree intensified.
中文关键词	中国北方 ; 沙漠化土地 ; 遥感监测 ; 植被 ; 影像处理技术 ; 演变
英文关键词	the North of China desertification land evolution
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:1276485
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/2XILL650/204647
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	王涛,吴薇,薛娴,等. 中国北方沙漠化土地时空演变分析[J]. 中国科学院西北生态环境资源研究院,2003,23(3):230-235.
APA	王涛,吴薇,薛娴,张伟民,韩致文,&孙庆伟.(2003).中国北方沙漠化土地时空演变分析.中国沙漠,23(3),230-235.
MLA	王涛,et al."中国北方沙漠化土地时空演变分析".中国沙漠 23.3(2003):230-235.