生态

Through the analyzing of several forest ecological benefits,the dependent variable set and the independent variable set were found.

通过对森林多种生态效益的分析，确定了计量森林生态效益的因变量集和自变量集。

Ecological footprint is a method for measure sustainable development degree of a country or region, quantitatively reflect the destructiveness and influence degree of human activity on ecological environment.

生态足迹是衡量一个国家或地区可持续发展程度的一种方法，定量反映人类活动对生态环境的影响和破坏程度。

Ecological deterioration of the system is not above, many experts said it is not ecological problems?

生态的系统不段的恶化，很多专家不是说过是生态的问题吗？

Along with the strategy of western development of China being put into effect, the ecological devolution and ecological rehabilitation will get more prominent.

随着我国西部大开发战略的实施，其生态系统退化和生态环境建设问题将更为突出。

On the base of the principal factors selected from natural, social and economical conditions in Shenyang, 230 varieties virescence plants are analyzed and ranked, the paper picks out diaphysis trees, basic trees, ongoing expansion trees, adequately retained trees and selective trees from them, and the selection and adjustment program of basic trees and diaphysis trees.

在此基础上，采用园林专家咨询评价的方法，结合前人的研究成果及园林工作的实践总结，从生态适应性、观赏性、生态效能等方面全面系统的建立了沈阳市绿化植物的评价应用的综合指标体系，并根据沈阳市的自然条件和实际情况确定了主要的指标因子对沈阳市常见的230种绿化植物进行了综合评判和分级，筛选出最适宜的骨干树种和适宜的基本树种及宜继续推广的、可适当保留的或应淘汰的种类，提出了沈阳市绿化基调树种和骨干树种选择和调整的方案。

The development of urban green space distribution is ecology foundation of urban construction.

城市绿地建设是城市建设的生态基础，对于加快生态化城市建设具有重要的作用。

In plantation ecosystem, the vegetation diversity decreased due to natural factor or human activity, but the level of diversity is not always lower than that of other ecosystems. Especially in region with rare vegetation, the level diversity of undergrowth vegetation in plantation is higher.

人工林林下植被多样性会因自然或人为因素而下降，但是林下植被多样性并不低于所有自然生态系统，在植被稀少、种源匮乏地区，人工林林下植被的生物多样性甚至高于自然生态系统。

Secondly, BP neural network model is built to compute the ecological index, based on the results, five types of ecological community are divided, and the difference between the communities of the same type is discussed.

根据各社区土地利用现状和生态化指数的分布情况，将社区分别划分成五大类型，并比较各类型社区之间的生态水平差异。

The flow of the downriver river course blocked...

针对塔里木河流域生态环境的现状、存在的问题，提出了针对性的治理对策；以期为流域资源的综合开发利用、水土保持、生态环境保护等提供科学依据。参12。

Bertalan ffy's General System Theory, by reasoning the evolutionaiy process of cell and indivi dual from analogy, man's niche in ecoystem is deduced: it is not only the linkage of food chain, but also the regular-controller in ecosystem.

这种划分对于自然生态系统或只有原始人的生态系统可能是非常正确的，但在今天，生物圈内几乎任何角落都有现代人的影响，而这种影响远非一个普通

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。