西北林学院学报2013，Vol.28Issue(1)：151-156,6.DOI:10.3969/j.issn.1001-7461.2013.01.31
北亚热带栎树混交林空间结构特征分析
Spatial Structure of Quercus Mixed Forest in Northern Subtropical Region
摘要
Abstract
In order to understand the stand structure of mixed forest in northern subtropical region,the spatial structure of forest community in Xuyi,Jiangsu Province was analyzed by using traditional stand structure indices and four spatial structure indices of mingling,angle index,neighborhood comparison and opening degree. The results were reported as follows. 1) The species diversity of the mixed forest was rich, Quercus variabiLis ,Q. aliena and Q. acutissima had the obvious superiorities in the number of trees and basal areas,being the dominant species of the trees layer,the tree heights of these species was higher than the main storey (18 m) of the forest,while the growth vigor however, was not good. 2) The degree of average mingling of the stand was 0. 62,belonging to strong mixed state. The angle index was 0. 48,which was within the random distribution. The neighborhood comparison ratio was 0. 49,and 49% of the trees in the stand were dominant ones. The average opening degree was 0. 451, which displayed that the growth space of most trees in the forest was sufficient. 3) The growth advantage of Q. variabilis was not significant, which would decline in the succession process,Pistacia chinensis and Q. aliena would become the dominant species.关键词
栎树混交林/空间结构/混交度/角尺度/大小比数/开敞度Key words
Quercus mixed forest/spatial structure/mingling degree/angel index/neighborhood comparison/ open degree分类
农业科技引用本文复制引用
马洪婧,袁发银,刘中亮,史珑燕,关庆伟..北亚热带栎树混交林空间结构特征分析[J].西北林学院学报,2013,28(1):151-156,6.基金项目
国家林业公益性行业科研专项"提高城市森林固碳能力的关键技术研究与示范"(201104075). （201104075）
