文献类型：期刊文献

中文题名：用哑变量法求算立地指数曲线族的研究

英文题名：Research on the Use of Dummy Variables Method to Calculate the Family of Site Index Curves

作者：李希菲[1] 洪玲霞[1]

第一作者：李希菲

机构：[1]中国林业科学研究院资源信息研究所

年份：1997

卷号：10

期号：2

起止页码：215-219

中文期刊名：林业科学研究

外文期刊名：ROREST RESEARCH

收录：CSTPCD;;Scopus;北大核心:【北大核心1996】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金

语种：中文

中文关键词：森林;立地指数曲线;哑变量方法;导向曲线法

外文关键词：site index curves dummy variables method guide curve method

分类号：S758.5

摘要：用哑变量法求算立地指数曲线族的研究＊李希菲洪玲霞关键词立地指数曲线哑变量方法导向曲线法立地质量是表示生长在某一立地上既定树种或林分类型林木的生产潜力［１］。立地质量不同，林木的经营措施也不同。描述立地质量的方法很多，现在多采用地位指数，即以造林年数和...
Using dummy variables method to calculate the family of the site index curves is introduced in this paper.The method is able to settle the problem that the slop of guide curve is too dependent on site age distribution of sampling plots when guide curve method is employed.The variations of jackknifes slops which are got from dummy variables method and guide curve method are compared.The result shows that the standard deviation of guide curve method is as three times as that of dummy variables method.The result proves that dummy variables method is better than guide curve method.