珠江口沉积物重金属污染及其潜在生态危害评价

对珠江口表层沉积物中重金属的分布及富集状况进行了分析 ,并采用Hakanson潜在生态危害指数法对其生态危害程度进行了评价。结果表明 :珠江口表层沉积物中Zn、Cr、Cu、Cd等重金属含量呈现由西北渐向东南递减的变化特点 ,而Pb、As、Hg等重金属元素的含量分布无明显规律 ;这些重金属中 ,以Hg的富集程度最高 ,其余元素的富集均较低。生态危害评价显示 ,除Hg属中等危害程度外 ,其余的重金属元素均属轻微危害程度 ;珠江口表层沉积物中主要重金属污染程度的顺序为Hg >Cd >Pb >Cu >As>Cr>Zn。     

氧化塘处理高速公路服务区污水技术初探

提出并试验研究了氧化塘处理高速公路服务区污水的方法，所得结果可用于高等级公路服务区及管理区污水处理。     

应用δ~(13)C值探讨土壤中有机碳的迁移规律

C3 植物与C4 植物具明显的δ13C值差异 ,利用这种特性 ,选取荔波茂兰喀斯特森林边缘处这个C3植物—C4 植物转换生长的地点 ,分别采集森林与农田各三个剖面的土壤样品 ,根据测定其土壤总有机碳、不同粒径及不同比重组分的δ13C值间的相互关系来推导土壤有机碳的若干迁移规律     

GIS支持下的水文生态效应评价混合型专家系统设计初探

文章从人工神经网络(ANN)、专家系统(ES)各自的优势和不足出发，结合地理信息系统(GIS)技术的特点，介绍了水文生态效应评价的混合型专家系统(HEMES)的基本结构模式和各模块的功能。然后抓住ANN、ES、GIS的共同作用因子一专家知识，从数据库结构、C 类方面探讨了三者集成的问题，并根据集成的思想探讨了相关功能设计。指出HEMES是一种更准确、易操作的评价技术，可作为相关管理、决策者的辅助工具。     

在监测样本信息的基础上确定水环境系统权重的分配方法

权重确定是水环境质量评价中很重要的一个方面，本文在监测样本信息的基础上，利用正交旋转变换方法，提出了一种权重确定方法，并结合实际进行了计算。     

从生态环境角度论鄱阳湖区农业可持续发展

鄱阳湖区农业资源十分丰富，具有发展大农业的优越条件。本文通过对湖区农业生态环境的脆弱性分析，指出湖区农业的非良性循环特性，提出防洪、抗旱、治涝、血吸虫病治理等对策措施，为湖区农业可持续发展提供决策参考。     

生态小区特征和指标体系探讨

保护和建设生态小区，推行生态细胞工程是自然生态工作的有力补充。对于目前出现的许多生态小区，中国尚无一套正式通用的生态小区考评指标体系。本文从生态学的角度出发，探讨了生态小区的概念、内涵与其特征，并以此为基础，提出了生态小区的考评指标体系，希望以此引导四川省生态小区的创建活动。     

Past and future sustainability of water policies in Europe

The article contributes to a discussion on two global issues on water: water resources management, and water supply and sanitation. Focusing on Europe, it traces the legal roots of current systems in history: as a resource, water is considered as a common property, rather than a market good; while as a public service it is usually a commodity. Public water supply and sanitation technologies and engineering have developed under three main paradigms: quantitative and civil engineering; qualitative and chemical/sanitary engineering (both on the supply side); and the most recent one, environmental engineering and integrated management (on the demand side). The cost of public drinking water is due to rise sharply in view of the two‐fold financial challenge of replacing an ageing infrastructure and keeping up with ever‐rising environmental and sanitary quality standards. Who will pay? Government subsidies, or water users? The author suggests that apparent successes with privatisation may have relied heavily on hidden government subsidies and/or the healthy state of previously installed water infrastructure: past government subsidies are still felt for as long as the lifetime of the infrastructure. The article stresses the importance of public participation and decentralized local management of water and sanitation services. Informing and involving users in water management decisions is seen as an integral part of the ‘ethics’ side of the crucial three E's (economics, environment, ethics). The article strongly argues for municipal provision of water services, and hopes that lessons learnt and solutions found in the European experience may serve water services management efforts in other regions of the world.     

论国家生态安全

国家生态安全是一种全新的现代国家安全观，要重视和维护国家生态安全。