干旱区生态环境知识资源中心(Arid): 青海土地荒漠化评价及动态监测

Arid

	青海土地荒漠化评价及动态监测
其他题名	RS-and GIS-based Evaluation and Dynamic Monitoring of Land Desertification in Qinghai Province
	于海洋 1; 张振德 2; 张佩民 2
ISSN	1001-4675
出版年	2007
卷号	24 期号:2 页码:153-158
中文摘要	应用RS与GIS技术,利用1976年的MSS数据和2000年TM遥感数据,对青海境内的荒漠化土地现状与动态变化进行监测研究,并对其时空特征进行分析.结果表明:青海荒漠化土地面积2000年为2.2210~5 km~2,占总面积的31.11%,其中沙质荒漠化面积为1.8910~5 km~2,占荒漠化总面积的84.83%.1976年荒漠化总面积为2.20*10~5 km~2.近30年来,青海荒漠化土地总面积变化不大,但荒漠化程度明显加重,重度沙质荒漠化土地面积和沙漠面积分别增加了254.13%和94.78%.
英文摘要	Qinghai Province is one of the regions with the most serious land desertification in China. In this paper, the actuality and dynamic change of land desertification in Qinghai Province are monitored and lucubrated using RS and GIS technology, MSS data in 1976 and TM data in 2000, and the spatiotemporal change of land desertification in Qinghai Province is analyzed. The results show that the area of desertified lands in Qinghai Province in 2000 was 2.22310~5 km~2 and occupied 31.11% of the total land area in the province, in which the area of sandy desertified lands was 1.88610~5 km~2 and occupied 84.83% of the total desertified land area. The area of desertified lands in 1976 was 2.197*10~5 km~2. Since recent 30 years, the change of total area of desertified lands in Qinghai Province has not changed so significant, the area of saline desertified lands has been re-duced, but the desertification degree has significantly become more serious, and the areas of serious sandy desertified land and sand deserts have been enlarged by 254.13% and 94.78% respectively. The more serious land desertification is mainly affected by natural factors, such as the arid and semiarid climate, frequent occurrence of strong winds and climate warming, and then by human activities. Therefore, it is suggested to strengthen the implementation of returning land for farming to forestry and grassplot so as to improve the natural environment in Qinghai Province.
中文关键词	土地荒漠化 ; 沙质荒漠化 ; 动态监测 ; 青海
英文关键词	Qinghai Province RS GIS land desertification
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURAL ENGINEERING
WOS研究方向	Agriculture
CSCD记录号	CSCD:2721334
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/220972
作者单位	1.中国地质大学地球科学与资源学院, 北京 100083, 中国; 2.中国国土资源航空物探遥感中心, 北京 100083, 中国
推荐引用方式 GB/T 7714	于海洋,张振德,张佩民. 青海土地荒漠化评价及动态监测[J],2007,24(2):153-158.
APA	于海洋,张振德,&张佩民.(2007).青海土地荒漠化评价及动态监测.,24(2),153-158.
MLA	于海洋,et al."青海土地荒漠化评价及动态监测".24.2(2007):153-158.