日本落叶松林分密度控制图的编制及应用  

ESTABLISHMENNT AND APPLICATION OF DENSITY CONTROL DIAGRAM OF JAPANESE LARCH STAND

作　　者：张铁砚 姜文南 王义廷 

机构地区：[1]辽宁省林业勘测设计院 [2]中国林业科学研究院林业研究所 [3]辽宁抚顺矿务局林业处

出　　处：《林业科学研究》1989年第3期304-309,共6页Forest Research

摘　　要：辽宁省东部山区自然条件优越,雨量充足,土壤肥沃,适宜落叶松生长发育。日本落叶松在辽宁省占人工林总面积15％,蓄积量占20.9％。为提高经营水平,掌握林木生长与林分密度之间数量关系,在吸收国内外编制密度控制图理论和方法的基础上,编制了日本落叶松林分密度控制图,以期达到科学营林的目的。In this paper, the proportional method of total area of tree crown was used to establish the density control diagram of Japanese Larch stand for determining the maximum density line.In order to improve the precision of the stand density control diagram, we used the total nonlinear interative method to improve the values of equivalent diameter and equivalent tree height line. When determining the most suitable stand density that is the management index, the index of annual mean increment of the standard plot, the index of mean value of annual maximum increment of analytic trees and the ratio index of crown length to tree height were adopted. These methods were used for the first time in China,

关 键 词：日本 落叶松 林分密度 控制图 

分 类 号：S726.116[农业科学—林木遗传育种]