建设生态城市 走向生态文明

可持续发展的道路是扬州城市发展的必然选择，生态城市建设是实施可持续发展的载体，是实施可持续发展战略的基本经济社会形式，文章简述了扬州生态城市建设的可行性，必要性，内容，目标及其实施构想。     

城市电网的环境影响与防治对策

根据目前国内城市电网建设的现状,对城市220 kV和110 kV输变电工程的环境影响进行分析,并结合输变电环境影响特点,提出相应的环境保护措施和对策,以解决城市电网建设中存在的问题.     

城市未来发展持续性评价决策支持系统构建和设计

城市作为一定区域内的政治、经济和文化教育等中心，具有明显的集聚能力和辐射带动作用，其可持续发展是区域及整个国家可持续发展的前提。开发和构建城市未来发展持续性评价决策支持系统（UFDADSS），对加强城市发展可持续性动态监测和科学评价、提高城市可持续发展战略规划及决策水平具有重要意义。本文主要根据城市可持续发展的系统性、多样性、空间性、动态性等特征，从体系结构、功能模块、集成方式等几个方面，对UFDADSS的构建和设计进行了初步探讨。     

City Environment Art and Sustainable Development

The development of everthing follows its own law, which does not change at people’s own sweet will. Therefore, we must study the development of things so as to grasp the essence of things in their deep meanings, explore the direction of their de- velopment, and make them better serve the people. As a part of the thought of sustainable development, city environment art will be of active significance to the perfection of the thought and will also be the concrete embodiment of the synthetic index of economic development. Such a thesis, starting from the macroscopic angle, and relying on the leading thought of sustainable development, takes hold of the development trend of city environment art, and explores the various problems that have arisen in city environment in the process of city management by combining thoughts on city planning, so as to guide urban harmonious development theoretically. The present paper expounds on the views comprehensively and, through the synthetic analysis on city planning, city environment, art esthetics and the thought of sustainable development, makes a detailed analysis of the effects of the present rapid city development on city environment.     

GIS for Environmental Assessment of the Impacts of Urban Encroachment on Rosetta Region, Egypt

Unplanned urban expansion of the new urban cluster of Rosetta City, Egypt is reaching a critical stage. This unplanned expansion of slum areas threatens the land on which the high quality palm trees, by which Rosetta region is known, are cultivated. This research is concerned with studying the manner, rate, extent and impact of the expansion of the urban cluster of Rosetta City. A multi-temporal analysis of mainly the limits of the built up urban areas and their surrounding land cover is the main evaluation technique. By using Geographic Information Systems, it was possible to study the geographic base of the concerned area. An increase in area of the urban clusters of about 0.1 km² occurred from 1917–1945, and a second increase of over 0.07 km² occurred from 1945–1963. Just after the end of the Second World War, an abrupt increase took place in 1963–1993 that reached 1.7 km². The majority of all the urban expansion was unplanned. By studying the topographic map of Rosetta city and the urban clusters on the western bank of the river Nile, it was found that most of the urban conglomeration of the city is located on relatively elevated land. The western part of the urban area is of an elevation varying around 5.0 m, and inclining with moderate slope towards the eastern edge of the city adjacent to the river Nile. The urban expansion on inclined land has caused severe problems with the sanitary drainage, as the city lacks any sanitary drainage systems. Sanitary drainage currently operates through precipitation trenches. Sanitary sewage gather beneath the ground forming continuos streams which reach the basements of many of the monuments present.     

加强区域性中心城市建设在西部大开发中的作用

在分析区域性中心城市的条件和作用的基础上，针对目前西部区域城市发展体系的严重不完备，强调培育功能健全，经济发达，具有相当规模的区域性中心城市在实施西部大开发中的重要性与迫切性。     

唐山市灾害源分布、综合成灾模型及对策管理程序框图

本文对编制唐山市灾害源分布、综合成灾模型及对策管理程序的功能和总框图给予了简要说明,并结合唐山市各种灾害的情况阐述了该程序建立各部分的子框图的重要性和关键技术。     

唐山市协调工业发展与环境保护的创新途径

唐山市作为一个传统的重工业城市 ,多年来一直以资源型工业为主体 ,工业发展和环境保护的矛盾十分突出。本文以此为例 ,探讨了依赖于资源优势的工业发展过程应如何协调其发展与环境保护的关系 ,认为产业结构的调整是一个长期的动态过程 ,应作为一个持久努力的目标。目前应尽快通过技术转型和制度转型减少目前工业活动对环境造成的影响 ,促使工业发展向生态工业转变。     

广州市生态风险重点及其防范策略

为了构建更适宜居住生活、更适宜创业发展的山水田园型生态城市，为实现城市可持续发展的总目标，广州市必须系统而有重点地防范生态风险，解决制约广州城市发展的重点和潜在的战略生态问题，保障城市生态安全。本文着重探讨了广州城市发展中的台风、暴雨、洪涝、临海重工业的发展布局与近岸海域生态系统的保护、饮用水保障与水环境质量、机动车尾气污染与大气环境质量等重点生态环境问题及其防范策略。     

考虑洪涝灾害风险的城市应急避难场所选址研究*

为解决洪涝灾害下城市应急避难场所选址优化问题,将洪涝灾害风险评估与选址模型相结合。首先,运用灰色模糊综合评价法对洪涝灾害风险进行评价,得到洪涝灾害风险综合指数。然后,将综合指数归一化处理后作为权重引入疏散距离最小化和覆盖人口最大化的目标函数,结合最小化避难所数量,以最大服务范围、容量作为约束,构建引入洪涝灾害综合风险权重的多目标应急避难场所选址优化模型,并采用遗传算法对模型进行求解。最后,以武汉市作为实证研究对象验证模型的科学性和有效性。研究结果表明:在考虑洪涝灾害风险的情况下,应急避难场所选址方案可在接近最优解的情况下达到最优。研究结果可为城市防洪应急避难场所布局优化提供参考。