单词tree layer
un.: 树层
网络: 乔木层
树层
the vertical structure of each forest community were obvious and could be divided into tree layer , shrub layer , herbage layer and lianas.
各群落垂直结构十分明显，可分为乔木层、灌木层、草本层和层间植物。
Although our to feel pain, but she and shun the affection between the tree layer was so deeply.
虽然美嘉为之深感痛苦，但她和弘树之间的感情却因此更深了一层。
The species richness and species diversity index of the tree layer and shrub layer were obviously bigger than those of the herb layer.
乔木层和灌木层的物种丰富度和物种多样性指数均明显大于草本层。
The utilization of tree layer is comparatively seldom and the utilization of liana, the bamboo and the aquatic plant is even rare.
乔灌草比例较不合理，乔木层较少，藤本、竹类及水生植物运用更少；
Compared with species in tree layer, damages of woody seedlings, herbs or lianas growing under the canopies were largely reduced.
和乔木层比较，林下灌木和草本植物受污染的伤害大大降低。
While in man-made forest belt, Moraceae, Lauraceae and Euphorbiaceae were the chief plants in the tree layer.
而在人工型林带中，乔木层是以桑科、樟科、大戟科的树种为主。
In shrub-tree stage , the species diversity in tree layer was lower than that of shrub layer .
灌乔林过渡阶段群落乔木层物种多样性指数低，而灌木层多样性指数高。
The abundance index of the tree layer was higher than the shrub layer.
郑州市不同类型公园绿地乔木物种丰富度稍大于灌木。
Effects of selective cutting of different intensities on the tree layer structure and species diversity of evergreen broadleaved forest
择伐作业对常绿阔叶林乔木层树种结构及物种多样性的影响
Dominant Tree Species of Tree Layer and Classification of Community in Shiziguan Reservoir area
狮子关库区植物群落乔木层优势种及群落分类