| 西藏土地荒漠化遥感监测 |
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| 引用本文： | 于海洋,张振德,张佩民,余江宽.西藏土地荒漠化遥感监测[J].延边大学理工学报,2007,0(3):316-320. |
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| 作者姓名： | 于海洋 张振德 张佩民 余江宽 |
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| 作者单位： | 1.中国地质大学地球科学与资源学院,北京100083;2.中国国土资源航空物探遥感中心,北京100083 |
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| 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,对西藏境内的荒漠化土地现状
与动态变化进行监测研究,并对其时空演变特征进行了分析。结果表明,西藏荒漠化土地面积2000年为29.08
×104km2,占总面积的24.28%,其中沙质荒漠化土地面积为24.99×104km2,占20.86%。1976年荒漠化总面
积为27×104km2。由1976～2000年间,荒漠化土地总面积增加了20764.67km2,共增长7.69%,年增长率为
0.32%。同时,土地荒漠化程度明显加重,重度沙质荒漠化土地面积增加了315.87%。
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| 关 键 词： | 西藏 土地荒漠化 遥感 地理信息系统 |
Monitoring of Land Desertification in Tibet Based on RS |
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| YU Hai-yang,ZHANG Zhen-de,ZHANG Pei-min,YU Jiang-kuan.Monitoring of Land Desertification in Tibet Based on RS[J].Journal of Yanbian University (Natural Science),2007,0(3):316-320. |
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| Authors: | YU Hai-yang ZHANG Zhen-de ZHANG Pei-min YU Jiang-kuan |
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| Affiliation: | 1. School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China;
2. China Center of Aerogeophysical Survey and Remote Sensing for Land and Resources, Beijing 100083, China |
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| Abstract: | Based on remote sensing and GIS technology, this paper monitored and analyzed the spatial-temporal
characteristics of the land desertification in Tibet by using MSS and TM data acquired in 1976 and 2000
respectively. According to the monitoring result, the land area of desertification in Tibet is 2.908× 105 km2,
which occupies 24.28% of Tibet whole land. The sandy desertification in Tibet is 2.499× 105 km2, which
occupies 20. 86% of Tibet whole land. The area of land desertification in 1976 is 2.7× 105 km2. The analytical
result of remote sensing also shows that the gross land area of desertification in Tibet has increased 20 764.67
km2, the increase rate of each year is 0.32%. Obviously, the degree of desertification becomes severer. The area
of the severest sandy desertification and desert has increased 315.87%. |
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| Keywords: | Tibet land desertification RS GIS |
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