Simulating thinning of Larix olgensis industrial plantation

Based on getting the trees diameter transfer probability,the thinning of the Larix olgensis plantation was simulated by Markov process theory according to three methods such as thinning the smallest diameter trees,thinning the largest diameter trees and thinning intermediate trees.The suitable reserved density and thinning trees were confirmed after simulated thinning of Larix olgensis plantation.It is shown that Markov process theory can indeed reflect the diameter transfer process of Larix olgensis industrial plantation.By simulated thinning Larix olgensis industrial plantation with Markov process theory,the thinning method and measure according to cultivation time was achieved,the precision for managing Larix olgensis industrial plantation was raised.The small diameter trees should be thinned as the dominant not only considering from the point of cultivating forest but also from obtaining wood and increasing forest benefit.Class I trees and class Ⅱ trees should be reserved,class III trees and class IV trees should be thinned.The suitable management density for 20~25 years old Larix olgensis industrial plantation is 0.7.