次生环境

城市轨道交通次生环境影响评价指标体系建构

On evaluation index system of secondary environment impacts by urban rail transit Traffic

论我国目前次生环境资源问题的产生原因

On the Causes of the Production of Secondary Environment and Resource Problems in Present-dey China

根据不同生境物种的相似性系数CC进行系统聚类，5种生境在相似性系数为0.226水平时已被归并为两组，即原生森林组和次生环境组。

And evenness indexes Jsi range from 0.670 to 0.956 . On the base of similarity coefficients CC in Table 3 , the five different kinds of habitats can be clearly clustered into 2 groups by the systematic clustering : original forest group and secondary habitat group .

从内昆铁路修建浅谈铁路次生环境影响及控制对策

Deduced Environmental Impact of Neijing Kunming Railway Project and Mitigation Measures

城市轨道交通的次生环境影响与对策

Secondary Environmental Impact and Control Countermeasures of Urban Rail Traffic

湿性常绿阔叶林区次生环境鸟类群落动态研究

Dynamic research of bird communities in secondary habitats , humid evergreen broadleaf forest

既有铁路客运站次生环境影响分析

Study on Deduced Environment Impact of Existing Railway Stations

次生环境多氯联苯污染水平监测及富集趋势研究

TRENDS Research on Polychlorinated Biphenyls Pollution Levels and Its Richness Tendency in the Secondary Environment

各类次生环境中，鸟类群落多样性和稳定性之间并非成简单的正相关。

It indicated that there was no simple positive relation between the diversity and stability .

铁路工程建设对城市的发展起到了非常大的促进作用，但同时也相应地影响了城市的次生环境，给城市的发展带来了许多不利的影响。

Development of railway construction heavy promotes the city development . But at the same time , it would be influence the city sub-ecological environment .

从城市景观的角度来看，城市中的次生环境主要包括水、地、绿三个方面。

In the view of urban landscape , the city secondary-natural environment includes three kinds of forms , which is water , ground and green .

从原生环境和次生环境关系的角度提出环境中硒的区域分异在环境研究和评价中的意义。

From the view point of the relation between the primary and secondary environment , it is proposed that regional distribution of selenium in the environment is of significance in both environment study and evaluation .

由于水土流失、污染以及盲目开发等，加剧着次生环境的不平衡，使生态环境变得更加脆弱，缓减和改善这种生态危机已刻不容缓。

Inequality of secondary environment appeals intensively due to soil and water loss , pollution and exploitation blindly etc , making the ecological environment more frail so that reducing and improving such ecological crisis is of great urgency .

这一结论的得出为建立和完善城市轨道交通次生环境影响评价理论，正确进行城市轨道交通项目投资决策奠定了的基础。

It is an attempt to establish and perfect the current evaluation theory of secondary environment impacts on urban rail transportation , and lay a solid foundation on carrying on correct investment decision-making on urban rail transportation project .

通过对三门峡市区地下水的综合调查，发现其环境水文地质问题以区域地下水位下降为主，并导致地下水污染等次生环境水文地质问题的发生。

Based on an comprehensive investigation of groundwater in the Sanmenxia city , the article shows the question in the environment and hydrogeology is mainly regional groundwater lowering in the area , which results groundwater polluted and secondary EHP .

指标体系分为三个子系统&次生社会环境、次生经济环境、次生自然环境。

Indicator system is divided into three subsystems-the secondary social environment , secondary economic environment , secondary natural environment .

测定农药在环境中转化产物的生态毒理和环境归宿，有助于完整准确地评价农药化合物带来的原生和次生的环境风险。

Assessing the ecotoxicology and environmental fate of pesticide transformation products is necessary to accurately evaluate environmental risk of pesticides .

甘肃省是矿产资源大省，由矿产资源开发引发的次生地质环境问题非常突出。

Gansu province is a big province with great mineral resources . And the secondary geologic-environment problems became outstanding for the exploitation of mineral resources .

云南省矿产资源开发中，存在占地面积大，固体废弃物污染水体和加剧次生地质灾害等环境问题。

The problems of large occupation area , solid waste polluting water as well as intensifying secondary geological disaster are existing in the development of the mineral resource in Yunnan Province .

天然次生林地景观生态环境良好，水土流失程度小：人为影响林地景观类型不稳定，易造成水土流失；最不稳定的是荒草地景观类型，结构单一，生境恶劣。

The eco-environment of natural secondary forest landscape is good and soil erosion degree is little . human effect forest land is unstable and is easy to cause soil erosion . The most unstable landscape is waste-grass land with single structure and poor ecological environment .