|Table of Contents|

Monitoring of Land Desertification in Tibet Based on RS(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2007年第03期
Page:
316-320
Research Field:
环境地学
Publishing date:

Info

Title:
Monitoring of Land Desertification in Tibet Based on RS
Author(s):
YU Hai-yang1; ZHANG Zhen-de2; ZHANG Pei-min2; YU Jiang-kuan2
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
Keywords:
Tibet;  land desertification;  RS;  GIS
PACS:
P941.71
DOI:
-
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%.

References:

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Last Update: 1900-01-01