冀北山区次生杨桦林近自然度及优势度研究  

Near Natureness and Stand Dominance of Secondary Poplar-Birch Forest in Mountainous Area of Northern Hebei

作　　者：王鹏 陈丽华[2] 

机构地区：[1]上海勘测设计研究院,上海200434 [2]北京林业大学水土保持学院,北京100083

出　　处：《湖南农业科学（下半月）》2014年第10期41-44,共4页

基　　金：林业公益性行业科研专项经费项目资助(20080422)

摘　　要：以冀北山区杨桦次生林为研究对象,通过对3块公顷级大样地进行林木调查数据对比分析,研究了不同群落的近自然度和优势度。结果表明,不同天然次生群落的近自然度和优势度具有较明显的差异,次生杨桦混交群落在自然度和优势度两个方面均优于山杨和白桦纯林,更接近天然林的稳定结构,也是该地区次生杨桦林演替发展的方向。This study w as conducted in N orthern M ountainous A rea ofH ebeiProvince.W ith com parative analysis ofthe field investigation data from the 3 hectare-fields, the near natureness and stand dom inance of different com m unities w ere obtained. The results show ed, com pared w ith Populus davidiana pure stand and B etula platyphylla pure stand, their m ixed com m unity w as m ore approach the stable structure of naturalforestw ith the superior near natureness and stand dom inance,and w as the direction of succession and developm entof secondary poplar-birch forestin thatregion.

关 键 词：次生杨桦林 生态结构 近自然度 优势度 

分 类 号：S718[农业科学—林学]