西北林学院学报2012，Vol.27Issue(4)：7-12,6.DOI:10.3969/j.issn.1001-7461.2012.04.02
择伐强度对长白山区天然云冷杉针阔混交林空间结构的影响
Influence of the Selective Intensity on Spatial Structure of Natural Spruce-fir Mixed Stands of Coniferous and Broad-leaved Trees in Changbai Mountains
摘要
Abstract
Selective cutting operation was adopted with different intensities of cutting (no cutting, 20%, 30% , and 40%) in natural spruce-fir mixed stand located in Changbai Mountains, China to examine the influence of cutting on spatial structure of the stands. Three structure parameters (mingling, neighborhood comparison, and uniform angle index) were calculated. The results showed that the average mingling intensity of the plots with the cutting intensity of 20% was the biggest, the cutting intensity of 30% ranked the secondary, while the cutting intensity of 40% was the least. Selective cutting intensity exerted little influence on diameter differentiation. The species was in uniform distribution in the plots with cutting intensity of 20%. The species was in random distribution in the plots with cutting intensity of 30% and in no selective cutting plots, while in round state distribution in the plots with cutting intensity of 40%. Generally, the cutting intensity of 20% might enhance the stability of forest community spatial structure effectively and its communities spatial structure was superior.关键词
天然云冷杉针阔混交林/择伐强度/空间结构Key words
natural mixed spruce-fir forests/ elective cutting intensity/ spatial structure分类
农业科技引用本文复制引用
周蔚,杨华,亢新刚,沈林..择伐强度对长白山区天然云冷杉针阔混交林空间结构的影响[J].西北林学院学报,2012,27(4):7-12,6.基金项目
林业公益性行业专项课题(200804027) （200804027）
