tree species composition

常见例句

Height of trees and shrubs, density of trees and shrubs, shrub species, shrub coverage, tree composition and canopy are employed to evaluate the forest community.
森林群落指标主要包括：林木高度、灌木高度、灌木株数、林木株数、灌木种类、云冷杉林木组成比例、灌木盖度和森林郁闭度。
A transfering probability matrix model of linearly generalized diameter growth was used to deal with the tree species composition problem of mixed unevenly aged forest.
对直径生长转移概率矩阵模型进行了线性扩展，用以研究混交异龄林的树种组成问题。
The dynamics effects of cutting intensity on the tree layer species composition and diversity of natural mixed stand of conifer and broad-leaved trees (low intensity, 13.
和皆伐）作业对天然针阔混交林乔木层树种组成及物种多样性的动态影响。