Shifts in forest species composition ramify through the ecosystem in many ways because tree species have different, often unique properties.
由于树种具有不同的、往往是独特的特性,森林物种组成的变化以多种方式影响着生态系统。
Long-term effects are primarily mediated by changes in tree species composition and the consequent alterations of forest structure, productivity, and nutrient uptake.
长期影响主要是由树种组成的变化以及随之而来的森林结构、生产力和养分吸收的变化所导致的。
Citrus fruits, which normally ripen on the tree and contain no starch, undergo little change in carbohydrate composition following harvest.
在果树上正常成熟且不含淀粉的柑桔类水果,其碳水化合物组成在摘下后很少变化。
But as the composition of families changes, so too has the notion of who gets a branch on the family tree.
但是,随着家庭的组成发生变化,谁能在家谱图上获得一个分支的概念也发生了变化。
The expert system based on fault tree is selected for the diagnosis of electronic cabinet faults, after analysis of the composition and fault formation mechanism of the electronic cabinet.
通过分析机车电子柜的组成和故障形成机理,选择基于故障树的专家系统作为电子柜故障诊断的技术手段。
This paper presents the experimental results of investigating the composition of phenol compounds of Chinese Larch tree.
研究了混合态的兴安落叶松树木中酚类化合物的组成。
The law of net productivity composition in various stand types is basically identical with that of net productivity distribution in various forest tree organs.
林木仍然处于继续生长阶段,各类型林分净生产量组成和林木层各组份净生产量的分配,都表现为基本一致的规律。
The current tree replacement process in gaps does not appear to act towards the maintenance of the current community composition.
林隙现实树木更替过程不能维持群落现有组成;
The long horned beetles in various distribution areas could transfer from one host tree to another when the composition of the biotic communities changed.
天牛类害虫在各分布地区所联系的寄主树种,随着生物群落组成的变化而转移。
In this paper, the composition of this system was briefly introduced and the establishment of fault tree was outlined.
本文简介了该工程抑尘系统的构成,概述了该系统故障树的构建。
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.
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。
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。
Secondly, for the working principle and structure of the circuit chip, a component composition based on thread-tree was presented.
其次,针对电路芯片的工作原理和结构特征,本文提出一种新的基于线索树的构件组装方案。
The result shows that the composition of tree populations is unstable and changes with time.
结果表明,沟谷热带雨林各层次中的乔木种群组成是不稳定的,常常随时间而改变。
A novel formal method of description for component composition is proposed which is based on the description tree, and is very suitable for specific domain applications.
提出了适合领域应用的基于描述树的构件柔性组装描述的形式化方法;
In addition, if changes to the visual tree force updates to the composition scene graph, your event handler method is also called.
此外,如果视觉化树状结构的变更强制更新复合场景图形,也会呼叫事件处理常式方法。
The services composition plan was transferred into an AOV graph equivalently, and then was transformed into a binary tree further.
首先将一个服务的组合方案等效成AOV图,并将其转换成二叉树,然后进行后续遍历并编码。
In addition, if changes to the visual tree force updates to the composition tree, your event handler is also called.
此外,如果变更视觉化树状结构会强制更新复合树状结构,则也会呼叫您的事件处理常式。
In addition, if changes to the visual tree force updates to the composition tree, your event handler is also called.
此外,如果变更视觉化树状结构会强制更新复合树状结构,则也会呼叫您的事件处理常式。
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