森林景观效果生成因子的相关性

A correlation study of generation factors for forest landscape effects

森林群落结构是形成森林景观效果的物质基础。在浙江省淳安、金华和东阳等地采用典型选样法选取了30个景观林样地,采用样地法进行森林群落结构及其景观效果调查,用物种多样性、林分密度、群落丰富度、垂直层次性、种群分布格局等特征因子表征森林群落结构,用树木高度、郁闭度、枝下高、草本层盖度、色调、树种组成、分布状况和采伐剩余物等森林景观因子表征森林群落的整体景观效果,并对森林群落结构因子与森林景观因子之间进行相关性统计分析。结果表明:每个森林群落结构因子只与森林景观的个别因子之间有一定的相关关系,森林景观因子由相应的森林群落结构因子所生成,森林景观效果是森林群落整体结构特征和经营管理状况的综合体现。

Forest community structure is the physical foundation to form forest landscape effect. 30 plots of landscape forest were selected in Chun＇an, Jinhua and Dongyang Cities in Zhejiang Province by standard quadrat method, and their forest community structures and the forest landscape effects were measured. The forest community structure was represented by character factors such as species diversity, stand density, community richness, vertical layer, and distribution patterns of species groups. The forest landscape effect was represented by landscape factors including tree height, canopy density, under-branch height, coverage of grass-vegetation layer, colur reaction of stand, species composition, distribution of trees and leavings of felling. The correlation between forest community structure factors and forest landscape effect factors was analyzed. The results showed that each forest community structure factor had correlation only with a certain indi- vidual factor of forest landscape. Each forest landscapee effect factor was generated from correlated forest community structure factor; forest landscape effect was a synthesis reflection of the whole character of forest community structure and forest management situation. [Ch, 1 fig. 2 tab. 16 ref.]