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- W2387848183 abstract "Dujiangyan,the world natural and cultural heritage,is a famous travel site of the world and a national historical and cultural city,which was destroyed seriously by Wenchuan Earthquake.The earthquake had a huge negative influence on the development of its economy for a long time.The following two-year-long post earthquake reconstruction is the key period for its further development.This paper mainly applies the special analysis methods of GIS,based on 1∶500 000 topographic map of Dujiangyan,ETM and Quickbird image data of research area,in order to analysis the characteristics of land use dynamic change before and after the earthquake in Dujiangyan,which includes the magnitude,the speed,the direction and the degree of the changes.The results show that cultivated land,forest and garden area have been reduced,but the building land,unused land and grassland have increased from 2004—2008 years before the earthquake.While garden area and building area have a substantial increase from 2008—2010 years.During the two years of reconstruction,the speed of land use change reaches 1.69 percent rate,which is as nearly three times as 4 years before the earthquake(0.62%).The direction of land use change mainly transforms from other land to building land.The rate of Land use change was 0.24% per year before the earthquake,while after the earthquake it reached 0.5%,which indicates that the land use of Dujiangyan has been in a period of development with an increasing intensity,and the impact of human activities on the land use is increasing.At the end of this paper,we discuss the driving force of land use dynamic changes from the natural population,economic and other aspects.According to the main problems about land use of Dujiangyan,we put forward a basic model which makes overall coordination and whole control of land use,and provide an important suggestion for Dujiangyan's land management which will come into the leaping development period." @default.
- W2387848183 created "2016-06-24" @default.
- W2387848183 creator A5006063523 @default.
- W2387848183 date "2012-01-01" @default.
- W2387848183 modified "2023-09-23" @default.
- W2387848183 title "The Research of Land Use Dynamic Change before and after the Earthquake in Dujiangyan City" @default.
- W2387848183 hasPublicationYear "2012" @default.
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