摘要
By making an evaluation index system and using Analytical Hierarchy Process(AHP) to determine the evaluation factor's weights, this paper builds the valuation model ofEco-environmental stability of Tibet and uses the overlay function of raster-GIS (geographicinformation systems) to make a result map and finds the distribution characteristics ofEco-environmental stability of Tibet based on the analysis of result map. The study shows that theEco-environmental stability of Tibet is almost good andthe unstable region which is only 9. 78% ofthe total area of Tibet is distributed in the middle and low reaches of Yarlung river. To protectthe Eco-environmental of the unstable area from farther degenerating, the government should pay moreattention on the Eco-environmental construction work on this area.
By making an evaluation index system and using Analytical Hierarchy Process(AHP) to determine the evaluation factor's weights, this paper builds the valuation model ofEco-environmental stability of Tibet and uses the overlay function of raster-GIS (geographicinformation systems) to make a result map and finds the distribution characteristics ofEco-environmental stability of Tibet based on the analysis of result map. The study shows that theEco-environmental stability of Tibet is almost good andthe unstable region which is only 9. 78% ofthe total area of Tibet is distributed in the middle and low reaches of Yarlung river. To protectthe Eco-environmental of the unstable area from farther degenerating, the government should pay moreattention on the Eco-environmental construction work on this area.
基金
SupportedbyEarlyStageSpecialResearchonKeyBasicResearchProjectofChina(2004CCA03600)
