Research on the Use of Dummy Variables Method to Calculate the Family of Site Index Curves
- Received Date: 1996-10-16
- Available Online: 2012-03-17
Abstract: 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 jackknifes 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.