连续森林清查应用地理信息估计蓄积量的方法

The Method to Estimate Timber Volume with GIS in Forest Resource Inventory

提出了应用地理信息系统作为技术手段．以常规固定样地设置为抽样方式，以地形因子与蓄积量回归的估计方法来估计森林总体蓄积量的问题、讨论了可能性和可行性，给出和推导了总体无偏估计值和方差公式。

The authors proposed a method to estimate forest population timber volume which was based on fixed sample plots set up in the forest resource inventory as the sampling format, GIS as the technique way, and liner regression with topographic factors and forest volume as the method for sampling estimation. Meanwhile discussed the possibility of the method to estimate forest timber volume and presented the formulas calculating unbiased estimation value and variance.