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本试验利用洞庭湖区卫星象片,采取光学处理、目视判读的原理方法,根据土地种类、林种、优势树种、龄组等因子,确定判读的分类系统,并建立相应的判读标志,编制森林分布图。用成数点抽样的方法,估测各类型面积,并用固定样地资料,估测林分蓄积量和竹林株数。最后进行精度分析。这是今后进行林业区划和林业发展规划值得采用的手段。
According to the principle and method of optical processing and visual interpretation, we use the satellite imagery of Dongting Lake area to determine the classification system of interpretation according to the types of land, forest species, dominant tree species and age groups, and establish corresponding interpretation signs to prepare the forest Distribution. With the method of sampling in points, various types of area are estimated, and the fixed plots are used to estimate the stock volume and bamboo number. Finally, the accuracy analysis. This is a worthy approach for future planning of forestry and forestry development.