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[1]NI Zhong-yun,HE Zheng-wei,ZHAO Yin-bing,et al.Study on Vegetation Coverage Changes in Dujiangyan Before and After Wenchuan Earthquake[J].Research of Soil and Water Conservation,2009,16(04):45-48.

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Study on Vegetation Coverage Changes in Dujiangyan Before and After Wenchuan Earthquake

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 16 Number of periods: 2009 04 Page number: 45-48 Column: Public date: 2009-08-20

Title:: Study on Vegetation Coverage Changes in Dujiangyan Before and After Wenchuan Earthquake

Author(s):: NI Zhong-yun¹, HE Zheng-wei^1,2, ZHAO Yin-bing¹, GAO Hui¹, CAI Ke-ke¹, WANG Le¹; 1. Geosciences College, Chengdu University of Technology, Chengdu 610059, China;
2. Key Laboratory of Resource Environment and GIS in Beijing, Capital Normal University, Beijing 100037, China

Keywords:: radiation correction; apparent reflectance; vegetation covers; Wenchuan earthquake; Dujiangyan

CLC:: X171;P315.728

DOI:: -

Abstract:: TM remote sensing data of September 18, 2007 and July 18, 2008 were collected in the view of radiation correction theory by first doing remote sensing images radiation correction which can changes DN value to the apparent reflectance, then using NDVI processing to do density partition and classification, and finally getting the vegetation cover information. Considering the vegetation characteristics, classifying vegetation cover into none, low, medium and high four categories. The research showed that Wenchuan Earthquake has made huge effects on vegetation coverage change.

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