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《Journal of Beijing Forestry University》 2005-S2
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RS statistics and analysis for forest coverage of Beijing.

YANG Dan;FENG Zhong-ke.Institute of GIS,RS &GPS,Beijing Forestry University,100083,P.R.China.  
"Green Olympics" programming of the Beijing Olympic Game in 2008 put forward that forest coverage in Beijing should reach 50% before 2007.Therefore,it is very important to get real-time data of Beijing forest coverage quickly,which will provide basic data and decision support for Beijing's city layout and forest ecology environment construction.Relying on the information source of 2002 Landsat/ETM+ image and digitized map,and adopting RS software of PCI Geomatica V8.2,this paper sudies the best spectrum band combination and fusion of ETM+ image for Beijing forest coverage monitoring,then gets style,position and area of forest coverage with supervision classification,and compares the classification result with that of traditional investigation method to qualitatively evaluate the classification precision.The result of this study indicates that it can acquire the satisfied classification result by adopting the method which divides area after classification.Compared with the traditional investigation data,the investigation data in different counties fluctuate greatly,but the whole discrepancy is not over 4%.Landsat/ETM+ image is applicable to Beijing or other regions whose terrain is similar with Beijing on foest coverage study,and the forest coverage of Beijing is 46.66%.
【Fund】: 国家自然科学基金项目(90302014);; “863”国家高新技术项目(2003AA245030);; 北京市自然科学基金重点项目(4041002)
【CateGory Index】: S771.8
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