长白山南部次生林冠下红松人工林空间结构调整研究  

Spatial Structure Regulation of Pinus koraiensis Planted Under-canopy of Secondary Forest in the South of Changbai Mountain

作　　者：丛健 Cong Jian(Liaoning Provincial Forestry Development Service Center,Shenyang 110036,China)

机构地区：[1]辽宁省林业发展服务中心,辽宁沈阳110036

出　　处：《防护林科技》2020年第6期5-8,14,共5页Protection Forest Science and Technology

摘　　要：以长白山南部地区次生林冠下栽植的红松(Pinus koraiensis)为试验对象,通过对林分树种组成的调查和对开敞度、大小比数、混交度等量化指标的比较,开展了该区次生林冠下红松人工林空间结构调整的研究,结果表明:柞木林和杂木林下红松高生长模型分别为y=1.0130 x+0.0335和y=1.0427 x+0.0508,R^2分别达到0.990和0.992(P<0.001);通过树高生长模型,确定柞木林下栽植的红松应该在生长第13年末进行第1次上层林木的调整,生长到第17年末进行第2次上层林木的调整;杂木林下红松应该在红松生长第13年末进行林分调整。Taking Pinus koraiensis under-canopy of secondary forest in the south of Changbai Mountain as research objects,the basic component of tree species were investigated,the openness,size ratio,degree of mixing were compared,the spatial structure adjustment of secondary canopy were studied.Result shows that the height growth model of Pinus koraiensis under Xylosma racemosum forest and the broadleaved forest is y=1.0130 x+0.0335 and y=1.0427 x+0.0508,R^2 reach 0.990 and 0.992 respectively(P<0.001).Through height growth model,it was determined that in Xylosma racemosum forest the first adjustment of the canopy tree should be made at the end of the 13th year of growth for Pinus koraiensis,and the second adjustment of the canopy tree should be made at the end of the 17th year.And in the broadleaved forest the first adjustment of the canopy tree should be made at the end of the 13th year of growth for Pinus koraiensis.

关 键 词：红松 开敞度 大小比数 混交度 空间结构 

分 类 号：S753.52[农业科学—森林经理学]