环境影响评价公众参与的实例分析

简述了我国环境影响评价中公众参与的产生和发展 ,介绍了公众参与的几种常用方法 ,并通过实例分析阐明公众参与在环境影响评价中的重要作用。     

矿井水中微量有机污染物的深度处理

本文对华北地区某矿务局进行矿井水中微量有机污染物现状调查的基础上，结合目前国内外城市生活饮用水中微量有机污染物处理研究的资料，初步分析和介绍了矿井水中微量有机污染物的来 要污染物的种类及目前国内研究已较的处理方法，为矿井水的深度处理衣资源化提出一个新的研究方向。     

闹得海水库营养状态分析及富营养化防治

结合9年来对闹得海水库水质监测及相关文献资料，评价闹得海水库营养状态，分析主要污染物变化趋势，对该水库营养状态进行分析，提出该水库富营养化防治对策。结果表明：闹得海水库9年来营养状态在中营养-中富营养之间，主要营养盐总氮、总磷及高锰酸盐指数9年间无显著变化，农业面源是该水库主要营养盐及有机物主要来源。     

地震液化评价方法的对比与讨论--以添立大厦和添富花园工程为例

地震液化的准确判别，对建筑物安全影响颇大。结合添立大厦和添富花园工程具体情况，借鉴美国、法国和德国等在地震液化中采用两种或两种以上的方法做平行分析，进行了该工程的地震液化的评价。对各种评价方法所考虑的因素和侧重点进行了对比，并通过评价结果比较，说明了应用两种以上方法能提高判定的准确性及工程的可靠性。     

环境中的外部性及其内部化

在经济活动中，经济人为了使自己的收益达到最大化，他们会尽可能地使外部成本转嫁给社会，减少自己的内部成本，使社会资源的配置偏离社会的需要，所以，为了使资源的配置达到帕累托最优，就必须使外部成本内部化。内部化外部成本的经济手段有：向经济人征税、界定资源的产权和实行排污权交易制度等措施。     

Comparing the soil quality changes of different land uses determined by two quantitative methods

Soil quality is one of the most important environmental factors in sustaining the global biosphere and developing sustainable agricultural practices.A study was initiated in Wolong Nature Reserve,Sichuan Province,China to elucidate the soil quality changes of natural secondary succession,forest planting and agricultural practices after deforestatin in the humid mountainous region.The soil qualities of six land use types(natural forestland ,grassland,shrub land,secondary index(QI) and soil deterioration index(DI).The QI values of natural forestland ,grassland,shrub land,secondary forestland,cultivated land ,reforested land were 0.8039,0.3277,0.9127,0.6881,0.0285 and 0.3183,respectively.The DI values were 0%,-14%,12%,1%,-26% and -18% respectively.Both indexes suggested that shrub land can restore soil properties.To compare the two methods more directly,a deduced index QI‘based on QI value was developed,.The results showed that DI and AI‘ had a very high linear correlation coefficient(r=0.9775) despite the values were different .Both methods were efficient in evaluating the soil quality levels and DI was a more simple way in soil quality assessment,while QI could show more ecological meanings.     

在役GIS内置特高频传感器校验方法研究

运行中的GIS内置传感器因其不易拆装,很难对其可靠性及有效性进行校验。根据GIS的结构特点以及特高频信号在GIS内的传输特点,提出一种对内置式特高频传感器的有效性进行校验的方法。通过在相邻传感器注入特高频信号并对信号幅值进行检测,通过检测及计算结果来判断特高频传感器的有效性,经现场验证,该方法简单有效。     

浅析节日期间化工生产不安全因素及对策

分析了节日期间化工生产潜在的不安全因素,提出了相应的防范对策,旨在促进节日期间化工企业的安全生产工作.     

标定低浓度高锰酸钾溶液的方法比较

比较以高锰酸钾本身和邻菲哕啉-Fe^2＋作指示剂，对低浓度高锰酸钾溶液进行标定发现，以邻菲啰啉-Fe^2＋作指示剂的标定，结果更为准确。     

Propagation functions for monitoring distributional changes

In environmental assessment and monitoring, a primary objective of the investigator is to describe the changes occurring in the environmentally important variables over time. Propagation functions have been proposed to describe the distributional changes occurring in the variable of interest at two different times. McDonald et al. (1992, 1995) proposed an estimator of propagation function under the assumption of normality. We conduct a detailed sensitivity analysis of inference based on the normal model. It turns out that this model is appropriate only for small departures from normality whereas, for moderate to large departures, both estimation and testing of hypothesis break down. Non-parametric estimation of the propagation function based on kernel density estimation is also considered and the robustness of the choice of bandwidth for kernel density estimation is investigated. Bootstrapping is employed to obtain confidence intervals for the propagation function and also to determine the critical regions for testing the significance of distributional changes between two sampling epochs. Also studied briefly is the mathematical form and graphical shape of the propagation function for some parametric bivariate families of distributions. Finally, the proposed estimation techniques are illustrated on a data set of tree ring widths.