Application Methods of "3S"Technology in Extracting Forest Information in the Project of Returning Farmland to Forest

HUANG Jian-wen; CHEN Yong-fu; CHEN Qiao

Current situation and problems are analyzed concerning the national key ecological project of returning farmland to forest. On the basis of analysis above, methods are proposed on application of "3S" technology(RS,GIS and GPS) in the project of returning farmland to forest. By using the high resolution remote sensing imagery in the conversion farmland back to forest, the research contents related to five major aspects of the ecological project are as follows: positioning the farmland and measuring its area, categorizing and accepting the farmland, checking planting density, checking survival rate in new afforestation. Tree crown are mapped by using object-oriented image analysis, a program was developed to acquire tree crown factors. An attempt has been made to improve monitoring effect in the project of returning farmland to forest. The results indicated that the methods could be of some valuable in the ecological project.

1. Research Institute of Forest Resource Information Techniques ,Chinese Academy of Forestry, Beijing 100091 ,China

Abstract: Current situation and problems are analyzed concerning the national key ecological project of returning farmland to forest. On the basis of analysis above, methods are proposed on application of "3S" technology(RS,GIS and GPS) in the project of returning farmland to forest. By using the high resolution remote sensing imagery in the conversion farmland back to forest, the research contents related to five major aspects of the ecological project are as follows: positioning the farmland and measuring its area, categorizing and accepting the farmland, checking planting density, checking survival rate in new afforestation. Tree crown are mapped by using object-oriented image analysis, a program was developed to acquire tree crown factors. An attempt has been made to improve monitoring effect in the project of returning farmland to forest. The results indicated that the methods could be of some valuable in the ecological project.

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Reference (13)

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Application Methods of "3S"Technology in Extracting Forest Information in the Project of Returning Farmland to Forest

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通讯作者: 陈斌, bchen63@163.com

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