Successful forest resources monitoring requires an effective method to collect information related to forest area and tree crown.
主要采用面向对象的信息提取技术提取退耕地新造林的树冠信息。
Gaussian filter was applied to the image to improve the tree crown information and control image noise.
对快鸟影像进行正射校正,运用高斯滤波进行图像增强,减少噪音,增强退耕地的树冠信息。
Owing to their unique advantages such as large-scale observations, richness ininformation and repeatability, high spatial resolution remote sensing images provide an idealmeans to study forest tree crowns.
树冠是树木的重要组成部分，人们常常通过研究树冠来监测树木长势，预测树木生长量，甚至判定木材材质；高空间分辨率卫星影像具有观测范围广、信息量丰富、重复观测等特点，为研究林分树冠提供了理想的数据源。
Progress in research on diversity of canopy arthropods;
树冠节肢动物多样性研究进展
Influences of photosynthetic characters and light distribution on photosynthetic rate in the canopy of Navel orange leaves;
脐橙光合特性及树冠光能分布对叶片光合速率的影响
δ~(13)C and δ~(15)N of moss (Haplocladium microphyllum (Hedw.) Broth) for indicating habitats difference and canopy retention on atmospheric nitrogen deposition;
碳氮稳定同位素指示苔藓生境特征以及树冠对大气氮沉降的吸收
The upper part of a tree, which includes the branches and leaves.
树冠树的上部，包括树枝和树叶
South African tree or shrub having a rounded crown.
南非灌木，圆形树冠。
The roots are more tender than the tops.
根部比树冠更柔嫩。
The uppermost layer in a forest, formed by the crowns of the trees.
树荫树林中最上面一层，由树的树冠组成
Measure light intensity above and under the mangrove canopy by using the light meter.
用光照度计量度树冠上和树冠下的平均光照度。
Pruning, by removing part of the top, alters this ratio.
修剪通过剪除部分树冠而改变根冠比。
large American shade tree with large dark green leaves and rounded crown.
高大美洲遮荫树,树叶大,深绿色,树冠圆形。
Individual trees and groups of trees to create tree roofs bring the buildings down to scale.
一棵棵的树木和一组组的树木形成的树冠？？？
Studies on the relationship between the microclimate in the crown of tea plants and their growth and development.
条栽茶树树冠小气候与茶树生长发育的关系
a forest fire that advances with great speed jumping from crown to crown ahead of the ground fire.
一种森林火灾，从树冠到树冠常常高速蔓延超过地面火。
Measure air temperature and relative humidity above and below the mangrove canopy by using the digital thermo hygrometer.
用电子温湿计量度树冠上和树冠下的平均温度和湿度。
Asiatic tree fern having dense matted hairs sometimes used as a styptic.
亚洲一种树冠茂密的树蕨，有时用于止血。
I was fourteen more getting the branches and the vast spreading head of it cut off.
把它的树枝和巨伞状的树冠砍下来用去十四天。
Treating each tree as a separate scaffold of a very low-headed tree.
将每棵树作为一个树冠很矮的骨干枝来处理。
The outer zones are the conducting routes between the crown and the roots.
其外层环带还有沟通树冠和树根的运输线。
Response of structural plasticity of Tilia amurensis sapling crowns to different light conditions.
不同光环境下紫椴幼树树冠结构的可塑性响应
A Fractal Approach to Crown Structure and Rooting Characteristics of Poplar and the Strategies of Poplar Breeding;
杨树冠型、根系的分形特征及杨树改良策略
Effects of Different Training and Pruning on Canopy,Yield and Quality in Peach Variety 85-007;
不同树形对85-007桃树冠、产量和品质的影响