森林图斑的面积平差与分析

Adjustment and analyses of compartment area.

为了解决森林图斑面积平差方法中存在的问题,从形状系数和面积入手,由形状系数和面积共同确定权重,利用最小二乘法,得到森林图斑面积平差的一种新方法.研究路线:①对利用面积定权进行平差方法的分析,找到用面积定权方法的不足.②对利用形状系数定权平差方法的分析,找到用形状系数定权方法的弊端.③利用面积和形状系数共同定权平差方法,克服了上述两方法的缺点,是比较优化的定权方法.④综合利用面积、形状系数定权进行平差方法分析,找到新的面积平差方法.

In order to overcome those existing flaws in the adjustment of compartment area,by establishing weights that will be used in the least squares adjustment with parameters of shape coefficient and area,this paper develops a new method getting the adjustment of compartment area.Steps of the research include:1)analyzing the method of getting weights with the parameter area and finding its theoretical flaws;2)analyzing the method of getting weights with the parameter shape coefficient and finding its theoretical flaws;3)explaining how the methods of getting weights with the two parameters of area and shape coefficient overcome flaws exsiting in the previous two methods and 4)a summary in the end.A new adjustment of compartment area with its weights coming from comprehensive application of area and shape coefficient is finally given.