东北过伐林区蒙古栎林空间结构分析与评价  

Analysis and Evaluation on Spatial Structure of Quercus mongolica Forests in Over-logged Region in Northeast China

作　　者：陈新美[1] 张会儒[1] 姜慧泉[1] 

机构地区：[1]中国林业科学研究院资源信息研究所,北京100091

出　　处：《西南林学院学报》2010年第6期20-24,共5页Journal of Southwest Forestry College

基　　金：国家"十一五"科技支撑计划项目(2006BAD03A08)资助

摘　　要：基于面积为50 m×50 m的2块蒙古栎林标准地的定位调查数据,利用角尺度、混交度和大小比数3个参数对其林分空间结构进行分析评价。结果表明:2块标准地的林分分布格局均为均匀分布,都出现了蒙古栎的单种聚集,树种组成单一;蒙古栎的胸径大小比数和树高大小比数分化均比较严重;混生的其他树种生长大多处于劣势。今后应采取人工更新或引进不同的树种,以增加物种多样性,提高树种混交度,促进林分结构优化。Three parameters including uniform angle index,mixing index and the neighborhood comparison were used to analyze and assess the spatial structure of Quercus mongolica stands based on the oriented survey of two pieces of 50 m×50 m plots.The results showed that the plant distribution of the two plots was both in uniform pattern,and the species composition of them was simple in both of the two plots with congregation of the single species of Q.mongolica.It was showed that the differentiation of the both diameter neighborhood comparison and tree height neighborhood comparison of Q.mongolica trees was significant,and the growth of other mixed tree species was mostly depressed.In order to enrich species diversity of the stands,increase the species mixing degree and to improve the optimization of stand structure,it was proposed that artificial regeneration or rational tree species introduction should be adopted.

关 键 词：蒙古栎林 空间结构 角尺度 混交度 大小比数 

分 类 号：S757.7[农业科学—森林经理学]