Study on the Forest Resources and the Spatial Distribution of its Change in Hangzhou

Abstract

The land cover maps of Hangzhou in 2000、2005 and 2010 are generated based on object-oriented method using multi-temporal TM/ETM+ images for the analysis of the forest distrabution and change detection.. The paper focuses on the method of the extraction of forest information, especialy the analysis of the characteristic variables that can be used for classification. LBV transformation,the K-T transformation and vegetation index are studies for various types of the forests, and the appropriate rules and parameters are derived accordingly to extract the forest information. The paper also illustrates the spatial distribution of the dynamic change of forest resource by analysing the land cover of three years .At last, the type and the proportion of the forests dynamic change are statistical calculated, and the driving forces for the change are analyzed to provide the decision-making basis for the relevant department.