摘要
本文以林分平均高为自变量,以每公顷胸高断面积为因变量,采用数学模型进行拟合,由最佳经验方程得到样本平均疏密度状态下林分总断面积曲线,再将平均曲线提升到疏密度为1.0时的断面积G_(10),最后根据形高法公式M_(1.0)=G_(1.0)HF计算林分单位面积标准蓄积量,编制安徽省国外松人工林标准表。经检验,该表预估精度98.1%,满足林分蓄积调查精度要求,可在森林资源调查中推广使用。
In this paper,with the mean stand height as the independent variable and the sectional area at the breast height per hectare as the dependent variable,the total sectional area curve of the stand in the mean sample density was obtained using the optimum empirical equation,and the mean curve was then further improved to the sectional area G_(1.0) in Density1.0.Finally,according to the shape-height correlation method,the standard volume per unit area of stand was calculated with the formula M_(1.0)=G_(10)HF,and the standard table of introduced foreign pine plantations in Anhui Province was compiled.The estimated accuracy of the table has been tested to be of 98.1 which meets the requirement for surveying the stand volume and could be promoted for use in forest resources surveys.
作者
谢世宝
XIE Shibao(Forestry Survey and Planning Institute of Anhui Province,Hefei 230031,Anhui,China)
出处
《安徽林业科技》
2021年第3期24-26,28,共4页
Anhui Forestry Science and Technology
关键词
国外松
标准表
编制
研究
Introduced foreign pines
Standard table
Compilation
Study
