不同树种间的树干茎流量差异极显著，影响树干茎流量的主要树体特征因子是冠型结构、胸径和平均冠幅。
And there are obvious difference of stemflow among different species, the main factors that affect the stemflow are crown structure, diameter breast-high and crown width.
这个杂交品种似乎兼具两个亲本树种的特征。
This hybrid seemed to combine the properties of both parental species.
木材纹理图像的分形维数可以代表木材很多的纹理特征，它是木材树种的一项重要数字特征参数。
Fractal dimension of wood texture image can represent a lot of texture features, and it is an important characteristic parameter of timber species.
从形态特征、根冠比、叶片解剖构造、叶片保水力、水分饱和亏等方面分析了11个树种对干旱的适应性特征。
Using morphological characteristics, root-shoot ratio, anatomical structure of leaves, leaf water holding and WSD analyzed the water holding ability of 11 tree species.
皮孔的特征可以被利用来筛选抗病树种。
The characteristics of lenticels can be used for screening disease-resistant poplar varieties.
根据子午岭林区林虫区系组成和区划特征，结合主要树种害虫危害特点，提出了预防和除治子午岭林区森林害虫的3项措施。
Based on the fauna composition and division characteristics of forest pest insects in Ziwu Mountains and damage of pests on important tree species, 3 control countermeasures were provided.
通过对8种常绿阔叶树种和对照种(香樟)的叶结构特征比较，分析它们对光照变化的适应特性。
The adaptation to light of 8 evergreen-broad trees and control tree (Cinnamomum camphora) were analyzed by comparing their leaf structural characteristics.
为了准确识别树种，恰如其分地用材，必须充分了解一些常用木材的性能特征。
To distinguish the tree seed accurately, appropriately the timber wood, must understand some commonly used lumbers fully the performance characteristic.
本文主要从调查方法选择和群落结构特征参数计算两方面阐述了城市街道绿化树种结构量化研究方法。
The research method of quantifying the structure of street tree populations was mainly described from the survey method selection and the calculation of the parameters of street tree populations.
采用土钻法和盆栽试验研究了渭北地区主要造林树种的垂直根系分布特征及其抗旱性。
Methods of soil auger and pot experiment were used to research vertical root distributions and drought resistance of main planting tree species in the Weibei loess plateau.
结果表明，应用立木级结构代替年龄结构研究栲树种群的结构和动态特征是适用的。
The result shows that the Tree class structure replacing the age structure is suitable for studying the structure and dynamics of Castanopsis fargesii population.
本文通过研究红木8类19个树种的木材材色、光泽度、粗糙度参数，分析了红木类木材视觉物理量的分布特征；
This paper analyzed the wood surface color, luster and roughness of 19 different species of HONGMU in 8 groups.
本文对其中的直射光、上层树种、草本和灌木等3个群落结构特征因子进行研究。
The influence of 3 community characteristics factors of direct sunlight, upper canopy species, herbs and shrubs were studied in this paper.
本文对其中的直射光、上层树种、草本和灌木等3个群落结构特征因子进行研究。
The influence of 3 community characteristics factors of direct sunlight, upper canopy species, herbs and shrubs were studied in this paper.
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