建设项目"三同时"制度中存在的问题及分析

本文就我国“三同时”制度实施中存在的问题进行了较全面的剖析，并针对这些问题提出了解决的办法，为我国进一步完善“三同时”制度，拓展“三同时”管理的内涵，制订有关“三同时”管理细则提供了有价值的参考。     

重大环境污染事故的防范及紧急处置

重大环境污染事故危害重大，为及时防范和处置，应对其隐患者监护和事故性风险评估，建立紧急救助的快速反应系统和紧急处置询系统，开发专家系统，强化专业人员培训并建立国家的安全信息数据库。     

活性炭水处理技术应用

本文综述了活性炭水处理的特点，主要影响因素，活性炭的再生及活性炭吸附法在水处理中的应用，从而论证了活性炭吸附法应用于水处理的可行性和有效性。     

昆明市废弃食用油脂污染及其管理

本文通过对昆明市废弃食用油的去向对环境污染和人体危害的调查，提出了加强管理的措施及处理工艺。以达到对其有效治理和合理运用的目的。     

船舶油污染防治的30年

1967年，油轮Torrey Canyon和以后发生的Amoco Cadiz、Exxon Valdez等溢油事件，震动了石油、航运等企业以及海洋环境保护部门。从1969年开始的溢油会议，交流油污染防治经验和成果，到1999年的30年，可以看出船舶污染防治的梗概。文中对此作了综合评述，并说明目前状况和今后的发展。     

最佳管理措施在非点源污染防治中的应用

综述了最佳管理措施（ＢＭＰｓ）在非点源污染控制中的应用现状，工程性措施有人工湿地、植被过滤带与缓冲带、蓄水池与沉淀塘等，非工程性措施有免耕－少耕法、化肥农药合理使用、生物废弃物再利用、地下水位控制、灌溉水生态化等，以及它们所取得的成果，并展望其发展趋势及前景。     

海滩旅游资源质量评比体系

论文回顾了当前国内外海滩旅游资源质量评价体系的发展现状 ,并依据我国具体状况 ,提出了适合我国国情的新的评价体系。新体系选择80个评价因子 ,分为旅游资源条件和可利用条件两个大类 ,前者包括地貌、水体、气候气象、生物、人文等5个亚类 ;后者包括基础设施及管理、安全、卫生等3个亚类。论文建立的新的海滩质量评比展示模式将有利于国内外海滩的质量对比 ,可促使我国海滩旅游业与国际接轨、能够向人们提供较多的海滩质量信息并利于海滩的经营管理     

污水土地处理水旱轮作条件下磷素在土层中迁移特征的模拟实验

为了解污水土地处理过程中不同土壤类型土壤溶液 P含量和迁移特征 ,在一种特殊的大型人工模拟土层和地下水实验装置中进行试验 .研究结果表明 :水田条件下 1.5m～ 0.5m土壤溶液 P含量极低 (≤ 0.02 mg/L ) ,但在旱地条件下 ,P含量上升至 0.045mg/L～ 0.628mg/L,P素随入渗污水向下迁移距离可达 1.1 m.在低水力负荷率和较长停留时间的运行条件下 ,1.3m以下土壤溶液和地下水的 P含量处于安全水平 .     

Integrated nutrient management and waste recycling for restoring soil fertility and productivity in Japanese mint and mustard sequence in Uttar Pradesh, India

Supplementing the nutrient requirement of crops through organic manures plays a key role in sustaining soil fertility, and crop productivity and reducing use of fossil fuels. Field experiments were conducted for 2 years at two different locations (i.e. Lucknow and Pantnagar) in Uttar Pradesh, India. The objectives of the study were to assess the herb and essential oil yields of Japanese mint (Mentha arvensis cv. Hy 77), and its nutrient accumulation under single and combined applications of organic manures and inorganic fertilizers (NPK). Changes in physical and chemical characteristics of the soils (Fluvisols, Mollisols) were also determined. Eight treatments comprising different combinations of NPK through inorganic fertilizers and farm yard manure (FYM) were compared. The distilled waste of mint after extraction of essential oil was recycled to soils in the plots to supplement the nutritional requirement of the succeeding mustard crop (Brassica juncea cv. Pusa Bold). Herb and essential oil yield of mint were significantly higher with combined application of organic and inorganic sources of nutrients as compared to single applications. Accumulation of N and P was at par under full inorganic and combined supply whereas, K accumulation was higher with the former. Soil organic C and pH after harvest of mint did not significantly differ among the treatments, but the level of mineralizable N, Olsen-P and NH₄OAc extractable K were higher in soil with integrated supply of nutrients. Significant increase in soil water stable aggregates, organic C, available NPK and microbial biomass, and decrease in soil bulk density were observed with waste recycling over fertilizer application. These benefits were reflected in the seed and stubble yield of mustard which succeeded mint. This study indicates that combined application of inorganic fertilizers with organics helps in increasing the availability of nutrients and crop yield and provides a significant effect to the succeeding crop. Similarly, recycling crop residues reduces the need for fossil fuel based fertilizer, and helps in sustaining and restoring soil fertility in terms of available nutrients and major physical and chemical characteristics of the soil.     

Approaches to developing risk management objectives: an analysis of international strategies

Risk assessment/management frameworks employed around the world to guide environmental decision-making were analyzed for their approaches to developing risk management objectives and the decision criteria necessary for environmental policy implementation. Frameworks from the Netherlands, the UK, Sweden, Australia/New Zealand, Canada, and the USA were considered. Progress in refining the scientific basis for risk assessment/management has been made, but there has been little parallel development in defining the mechanisms by which available scientific information may be used to define risk management goals or identify and select between management options using a priori decision criteria. The lack of detailed guidance on the setting and achievement of risk management goals that appropriately balance technical information and public input remains an important challenge to the use and practice of all risk assessment/management frameworks.