内蒙古苏木山华北落叶松人工林冠层特征研究  

Characteristics of Canopy of Larix principis-rupprechtii Plantation in Sumu Mountains,Inner Mongolia

作　　者：张海东 王志波[1] 于楠楠 董忠丽 李银祥[1] 季蒙[1] 宁静 张南[1] 刘佳 张泽林 田稼穑 ZHANG Hai-dong;WANG Zhi-bo;YU Nan-nan;DONG Zhong-li;LI Yin-xiang;JI Meng;NING Jing;ZHANG Nan;LIU Jia;ZHANG Ze-lin;TIAN Jia-se;无(Inner Mongolia Academy of Forestry,Hohhot 010010,China;Institute of Agriculture and Forestry Science,Inner Mongolia,Jining 012000,China;Chifeng Forest and Grassland Protection and Development Center,Inner Mongolia,Chifeng 024005,China;Comprehensive Technology Extension Center of Agriculture and Animal Husbandry of Liusumu Town,Liangcheng County,Ulanqab City,Inner Mongolia,Liangcheng 013755,China)

机构地区：[1]内蒙古自治区林业科学研究院,内蒙古呼和浩特010010 [2]乌兰察布市农林科学研究所,内蒙古集宁012000 [3]赤峰市森林草原保护发展中心,内蒙古赤峰024005 [4]凉城县六苏木镇农牧业综合技术推广中心,内蒙古凉城013755

出　　处：《内蒙古林业科技》2021年第4期46-50,共5页Journal of Inner Mongolia Forestry Science and Technology

基　　金：内蒙古自治区关键技术攻关计划项目(2021GG0032)。

摘　　要：以苏木山不同林龄的华北落叶松人工林为研究对象,应用标准木法和枝解析木法研究华北落叶松枝、叶、果冠层分布特征。研究结果表明:(1)幼龄林和中龄林下层枝生物量所占比例最大(57.48%~61.75%),中层次之(33.21%~40.49%),上层最小(2.03%~5.04%);近熟林和成熟林中层枝生物量所占比例最大(45.71%~56.71%),下层次之(27.76%~42.92%),上层最小(11.37%~15.53%)。(2)幼龄林和中龄林叶主要分布于中层(36.43%~46.53%)和下层(45.95%~59.51%),近熟林和成熟林叶主要分布于中层(45.35%~56.58%)和上层(33.37%~38.44%)。(3)幼龄林和中龄林下层枝叶果所占比例最大,分别为58.14%和57.60%,近熟林和成熟林中层枝叶果所占比例最大,分别为45.80%和57.51%。结合苏木山华北落叶松冠层分布规律,建议苏木山华北落叶松人工林进入近熟林阶段进行修枝管理,有利于林分质量提升。Taking different-aged Larix principis-rupprechtii plantation in Sumu Mountains as research objects,the canopy distributing features of branches,leaves and fruits of Larix principis-rupprechtii were studied by use of standard tree method and branch analysis method.The results showed that in young forest and middle-aged forest,the proportion of lower branch biomass was the largest(57.48%-61.75%),followed by middle branch biomass(33.21%-40.49%)and upper branch biomass(2.03%-5.04%).In near-mature forest and mature forest,the proportion of middle branch biomass was the largest(45.71%-56.71%),followed by lower branch biomass(27.76%-42.92%)and upper branch biomass(11.37%-15.53%).The leaves of young forest and middle-aged forest mainly distributed in middle layer(36.43%-46.53%)and lower layer(45.95%-59.51%),the leaves of near-mature forest and mature forest mainly distributed in middle layer(45.35%-56.58%)and upper layer(33.37%-38.44%).The proportion of branches,leaves and fruits in lower layer of young forest and middle-aged forest was the largest,with 58.14% and 57.60% respectively.The proportion of branches,leaves and fruits in middle layer of near-mature forest and mature forest was the largest,with 45.80% and 57.51%respectively.Combined with the canopy distribution rule of Larix principis-rupprechtii,it is suggested that branch pruning should be done when Larix principis-rupprechtii plantation entering in the stage of near-mature forest,which could be favourable to the promotion of stand quality.

关 键 词：苏木山 华北落叶松 冠层 生物量 经营措施 

分 类 号：S757[农业科学—森林经理学]