水土保持研究2011，Vol.18Issue(4)：183-188,6.
北京西山侧柏水源涵养林空间结构特征研究
Spatial Structure Characteristic of Platycladus orientalis Forests in Beijing Xishan Mountain
摘要
Abstract
This study investigated the application of terrestrial laser scanning for providing quantitative forest parameters at the plot-level by using ＇multi-stop＇ scanning method for determining stand parameters such as the tree height,diameter,basal area,and other parameters.This paper described the spatial structural characteristics of one plot-level stand of Platycladus orientalis forests in Beijing Xishan mountain using mingling degree,neighborhood comparison and uniform angle index.The results showed that there were twenty-one species in arbor layer of Platycladus orientalis forests,among which,Platycladus orientalis had the obvious advantage in population density and basal area,being the dominant and constructive species of the tree layer.The average mingling degree of the whole stand was 0.261,suggesting the low mingling degree of stands.The dominant species such as Platycladus orientalis,Robinia pseudoacacia and Rhus typhina population were mainly none or less-mixed,accounting for 85%,58%,57% of the total plants of the populations,while the accompanying species generally presented moderate,intensity and high intensity.In the spatial structural units,Platycladus orientalis,Pinus tabulaeformis,Quercus variabilis,Acer truncatum and Robinia pseudoacacia were mainly dominant,sub-dominant,and intermediate trees,accounting for 57 %,67%,89%,66% and 71% of the total plants of the populations,respectively,while the advantages of other populations were not obvious.The uniform angle index value of Platycladus orientalis forests was 0.542（greater than 0.517）,indicating that the spatial pattern of the stands was the aggregative distribution,but the aggregation degree was not high and the aggregation scale was not large.关键词
三维激光扫描/点云数据/涵养水源/空间结构Key words
3D laser scanning/cloud point/water conservation/spatial structure分类
农业科技引用本文复制引用
赵阳,余新晓,黄枝英,宋思铭,白艳婧,程中秋,靳阿亮,张宾宾..北京西山侧柏水源涵养林空间结构特征研究[J].水土保持研究,2011,18(4):183-188,6.基金项目
十二五国家科技支撑项目“海河上游水源涵养林体系构建技术研究与示范” （）
国家林业公益性行业科研专项经费项目“典型森林植被对水资源形成过程的调控研究” （）
