济南市水文地质特征对地下水污染的影响分析

从环境水文地质学的角度出发，对济南市地下水污染的主要途径和方式，以及局部地下水重污染区进行了较为详细的分析，济南市地下水污染以浅层地下水污染为主，局部地区深层地下水也已受到污染，并有进一步加重的趋势，地下水严重超采，造成多处地表塌陷和降落漏斗，并成为济南市地下水的重污染区。     

In vitro characteristics of human fetal cells obtained from chorionic villus sampling and amniocentesis

In vitro characteristics of human fetal cells have been investigated after chorionic villus sampling at the first trimester and amniocentesis at the second trimester of pregnancy. Light microscopy revealed heterogeneous morphology of cell types in both the chorionic villus culture and the amniotic fluid cultures. Based on the experiments performed, chorionic villus cells are more sensitive to pronase, trypsin, and versene during subculture and have a higher DNA content per single cell and release more [¹²⁵I]-Beta-human chorionic gonadotropin into culture medium than those found in amniotic fluid cells. The practical applications of this study are discussed.     

高硫原油加工过程硫回收水平分析

分析了金陵分公司最近三年来加工高硫原油带入的硫在全厂炼油过程的分布情况。随着原油加工量及含硫量的快速增长，硫回收能力凸现不足，表明目前正在加速建设的加氢精制和硫磺回收装置是十分必要的，这将进一步提高综合硫回收水平。从长远来看，还需采用扩大加氢工艺能力，在提升产品质量的同时达到减少硫向环境排放的目的。     

昆明空气污染物等级与天气背景的关系

通过样本分析得出：昆明空气污染物主要为SO2,为轻度污染;秋冬季出现污染日较多,可分为高压脊控制型和偏西气流型天气背景。夏季出现污染日较少,主要为高压脊控制型天气背景;污染物浓度在一天中的分布特征呈“W”型;污染物预报方程。     

北京平原土壤中若干元素背景含量的区域分异

本文根据计算机绘制的北京平原地区土壤元素等含量线图和趋势面图,揭示了土壤元素的区域分异规律,并对其引起区域分异的环境因素进行了分析。     

11种有机磷农药对海洋微藻致毒效应的研究

通过研究不同盐度条件下１１种有机磷农药对扁藻的相对增长率和叶绿素ａ含量的影响，得到了Ｓ＝３０和Ｓ＝２０时的半数有效浓度，并比较其大小。盐度作为环境因子，影响到有机磷农药的毒性。研究发现，遥有机磷农药在低浓度时出现一定限度的促生长作用；容易进攻细胞膜的有机磷农药对扁藻的致毒性相对较强；此外，有机磷农药的毒性大小与其结构密切相关含有苯环结构的有机磷农药毒性大小不含有苯 有机磷农药的毒性。     

Carbon Budget Implications of the Transition from Natural to Managed Disturbance Regimes in Forest Landscapes

Land-use change from an unmanaged to a managed forested landscape in northern forests is associated with a reduction of the area annually affected by natural disturbances (wildfires and forest insects) and the introduction of harvesting as a new disturbance. This study examined the impacts of changes in the disturbance regime-the frequency and type of disturbance-on landscape-level carbon (C) content and fluxes. The Carbon Budget Model of the Canadian Forest Sector was used to assess these impacts in six representative landscapes (100,000 ha each) with a range of disturbance regimes that are characteristic of conditions in coastal British Columbia, the interior of British Columbia, and the eastern boreal forest in Canada. The model was used to simulate ecosystem C fluxes during a period of natural disturbances, a 50-year transition period during which harvesting replaced natural disturbances, followed by 150 years of harvesting. The initial landscape-level biomass C content under natural disturbance regimes in the six example landscapes was 22 to 75% of their potential maximum content which is often used as the reference or baseline case. After 200 years of forest management, the C stored in the landscape plus the C retained in forest products manufactured from harvested biomass was between 58 and 101% of the landscape C content prior to the onset of harvesting. Landscape-level ecosystem C content was found to be affected by changes in the disturbance frequency, the age-dependence of the disturbance probabilities, and the disturbance-specific impacts on ecosystem C content. The results indicate that using the potential maximum C content of a landscape as the baseline always overestimates the actual C release due to land use change. A more meaningful procedure would be to assess the actual differences in landscape-level C content between the natural and the managed disturbance regime.     

国际环境法中环境信息交流制度

环境信息国际交流制度，已成为国际环境法的一项基本法律制度，其内容涉及各国和国际组织在这项交流中的地位，作用及机构，权利和义务，交流范围和形式，这项制度对有效保护人类环境发挥了多方面积极作用，在尊重各国主权，合作取得和共同享有，支持发展中国家参与交流原则基础上，这项制度将日益丰富，多样，完善。     

填埋场垃圾堆体平面压实工程试验研究

原生垃圾密度很小，为提高填埋垃圾堆体密实度、延长填埋场使用寿命，对填埋垃圾进行压实处理很重要。本文通过现场工程试验对影咱填埋垃圾堆体平面压实效果的主要因素进行了系统研究。实验结果表明：为取得最佳的垃圾堆体平面压实效果，最佳垃圾摊铺厚度在0.5m—0.7m之间，最佳机械行程次数为3次，增加碾压次数有利于提高垃圾堆体密实度，垃圾最佳含水率在30％——50％之间。     

“十五”环境规划编制方法的改革

在分析中长期环境规划发展趋势的基础上,结合可持续发展的要求,从6个方面探讨了“十五”环境规划编制方法的改革与创新的具体方案。