湖北林业科技

In order to get the tree stem feature of the major coniferous tree species to evaluating tree stem form, determining deforestation cases, and in proving forest management in Taizishan, we analyzed the relationship between the ground diameter, the Height, the Crown diameter and the DBH of Pinus massoniana, Chinese fir and Cupressus funebris. The conclusions are as following: (1) There is a quadratic function between Ground diameter（D0.05, D0.10）and DBH except that pinus massoniana is only a linear relationship. Ground diameter（D0.20, D0.30, D0.50）and DBH obey linear relationship. (2) The relationship between tree height and DBH is cubic. (3) There is a power function between crown diameter and DBH except that Chinese fir is a cubic function.