陕西宁东林业局华北落叶松人工林最适经营密度研究  

Optimal Management Density of Larix principis-rupprechtii Plantations of Ningdong Forestry Bureau in Shaanxi Province

作　　者：张丽楠[1] 王得祥[1] 郝亚中 柴宗政[1] 张洋[1] 吴昊[1] 

机构地区：[1]西北农林科技大学林学院,陕西杨陵712100 [2]陕西省宁东林业局,陕西西安710000

出　　处：《西北林学院学报》2013年第1期146-150,共5页Journal of Northwest Forestry University

基　　金：林业公益性行业科研专项"我国典型森林类型健康经营关键技术研究"(20100400206)

摘　　要：利用在宁东林业局进行的华北落叶松人工林标准地调查资料,研究了落叶松胸径与树冠面积的相关关系;并在此基础上,利用胸径、树冠面积和立木密度的相关规律,推算林分不同径阶的理论密度和适宜经营密度。结果表明:1)宁东林业局华北落叶松人工林胸径与树冠面积关系的最佳回归模型为Cws=0.044 6D2-0.755 1D+6.753 3;2)编制出理论密度和郁闭度为0.7～0.9的适宜经营密度表;3)落叶松人工林郁闭度为0.7时的林分密度为最适经营密度。Based on the data from the sampling plots of Larix principis-rupprechtii plantations of the for- estry farms of Ningdong Forestry Bureau in Shaanxi Province,this paper studied on the regression models of DBH and the crown area （ C_ws）, and used this to calculate the theoretical density and optimal manage- ment density. The results showed that： 1） the optimal regression model of DBH-C_ws was C_ws=0. 044 6D^2 - 0.755 1D＋6.753 3. 2） the table of theoretical density and optimal management density were established under a series of canopy densities between 0.7--0.9 of L. principi-rupprechtii plantations. 3） the canopy density of 0.7 was the optimal management density.

关 键 词：华北落叶松 人工林 最适经营密度 目标树作业体系 

分 类 号：S758.58[农业科学—森林经理学]