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通过随机问卷调查、网上调查、实地考察等方式,对北京、上海、沈阳、长春等城市主要干道、繁华商业区及一般街道垃圾箱摆放情况进行了调查。探讨了城市垃圾箱设置对市容环境、市民文明行为的影响。 相似文献
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电气浮法处理钻井废水实验研究 总被引:4,自引:0,他引:4
对电气浮法处理模拟钻井废水进行了实验研究,分析了工艺参数(电气浮时间、电极间距、电气浮后静止停留时间、废水温度和电流密度)对电气浮法处理效果的影响。实验结果表明,电气浮法处理钻井废水受许多因素的影响,掌握这些因素对电气浮处理的影响规律,有助于合理选取最佳参数,达到既高效又节能地处理钻井废水的效果。研究结果表明:最佳电气浮时间为10min,电极间距推荐选用1.0cm,电气浮后静止停留时间选用5min,废水适宜处理温度为30~50℃,选择电流密度小、电气浮处理时间长的组合工艺能达到最佳处理效果。 相似文献
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芬兰十分重视各种垃圾的处理和回收利用,并制定了严格的垃圾管理法。目前,该国每年产生的7000疗肺各种什历P右m现得到回收利用芬兰环培部门制定的最新目标是到200年将垃圾的回收利用率提高到80%。芬兰全国每人每年平均产生200公斤家庭生活垃圾,首都赫尔辛基市每人每年产生的生活垃圾则达250公斤。赫尔辛基市垃圾管理局在市区统一设置灰色的生活垃圾箱,根据垃圾量的多少,每座住宅楼旁都有数量不同的垃圾箱,这些垃圾箱每周由垃圾清洁车收集清理一次。当垃圾箱被推上清洁车时,垃圾的容量等数据就被自动地记录在驾驶室里的电脑中,清洁… 相似文献
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运用变异系数、集中化指数、泰尔指数、综合公平指数模型,分析了辽宁省城市公共体育设施空间分布特征及形成机制.结果表明,辽宁省城市公共体育设施空间分布区域差异特征显著,城市公共体育设施空间布局的综合公平程度总体较低,影响辽宁省城市公共体育设施空间分布格局形成和演变的因素较多,主要包括历史因素、经济发展与布局、消费水平、地方政府重视程度、大型体育赛事的承办和制度政策等因素. 相似文献
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长江三角洲16城市旅游竞争力比较研究 总被引:3,自引:0,他引:3
城市旅游竞争力是国内外城市旅游研究的热点。选取28个旅游经济与人文指标构建城市旅游竞争力的评价指标体系,运用因子分析法定量评价长江三角洲16城市旅游竞争力的综合实力,在此基础上按照旅游竞争力强度将16城市划分为最强型、较强型和一般型3个层次,对不同层次的城市旅游竞争力进行分析评价,并针对不同城市旅游竞争力特点提出了相应增强城市旅游竞争力的建议。研究创新点主要表现在:构建城市旅游竞争力的指标体系;运用因子分析法定量评价旅游竞争力;揭示16城市旅游竞争力差异化表现的原因。 相似文献
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生态城市的数学模型建立 总被引:6,自引:0,他引:6
本文首先论述了生态城市的概念和内涵;其次对于目前的生态城市的系统模型和指标体系进行了综述;然后建构了新的生态城市数学模型,重点讨论了建构该模型的理论基础及其指标体系的相关运算;最后指出该生态系统数学模型的理论和实践意义并对今后相关研究进行展望。 相似文献
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Cities have increasingly become the focal point for climate change initiatives. However, how cities respond to climate change challenges and through what mechanisms have remained largely unexplored. This paper develops a framework for local governance to examine and explain climate change initiatives in cities. Based on the analysis of 20 climate change initiatives in major cities and a detailed case study of Hong Kong, this paper has two main findings. First, local governments at the city level have an important role to play in climate change policies by embracing some key strategies (such as deliberation and partnership) and values (such as equity and legitimacy) of good governance. Second, by comparing and contrasting the experience in other cities, our case study of Hong Kong provides insights about the barriers that may limit a city's ability to adapt to new forms of governance that would enable it to better respond to climate change. The paper concludes by exploring the potential role of local governance as a model to strengthen climate change initiatives at the city level. 相似文献
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Taking Sustainable Cities Seriously: a comparative analysis of twenty-four US cities 总被引:1,自引:0,他引:1
Kent E. Portney 《Local Environment》2002,7(4):363-380
After briefly reviewing some conceptual underpinnings of sustainable cities, this paper analyses and compares sustainable cities initiatives in 24 US cities. The central question addressed in the paper is why some cities seem to take sustainability more seriously than others. Numerous demographic, socioeconomic and other characteristics of the cities are correlated with an Index of Taking Sustainability Seriously, which is a composite of some 34 different variables indicating whether each city engages in specific sustainability programmes, policies or activities. Many of the standard explanations, such as the income and wealth of the community, the liberalness of the city and the growth pressures placed on the city, are found to exhibit no correlation with the seriousness of the sustainability effort. What do correlate with the Index are: reliance on manufacturing, where having more residents employed in manufacturing industries is associated with less seriousness; and, the age of the population, where cities with older populations take sustainability more seriously. This has three implications for the future development of sustainable cities. First, some of the cities that might be said to need sustainability programmes the most--cities with heavy manufacturing that are more prone to pollution production--are the least likely to take such programmes seriously. Secondly, as cities' manufacturing bases decline, they should find it increasingly feasible to engage in sustainability initiatives. And, thirdly, as the populations of cities age, policy-makers should also find it easier to support, develop and take seriously sustainability programmes. 相似文献
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Kent E. Portney 《Local Environment》2013,18(4):363-380
After briefly reviewing some conceptual underpinnings of sustainable cities, this paper analyses and compares sustainable cities initiatives in 24 US cities. The central question addressed in the paper is why some cities seem to take sustainability more seriously than others. Numerous demographic, socioeconomic and other characteristics of the cities are correlated with an Index of Taking Sustainability Seriously, which is a composite of some 34 different variables indicating whether each city engages in specific sustainability programmes, policies or activities. Many of the standard explanations, such as the income and wealth of the community, the liberalness of the city and the growth pressures placed on the city, are found to exhibit no correlation with the seriousness of the sustainability effort. What do correlate with the Index are: reliance on manufacturing, where having more residents employed in manufacturing industries is associated with less seriousness; and, the age of the population, where cities with older populations take sustainability more seriously. This has three implications for the future development of sustainable cities. First, some of the cities that might be said to need sustainability programmes the most—cities with heavy manufacturing that are more prone to pollution production—are the least likely to take such programmes seriously. Secondly, as cities' manufacturing bases decline, they should find it increasingly feasible to engage in sustainability initiatives. And, thirdly, as the populations of cities age, policy-makers should also find it easier to support, develop and take seriously sustainability programmes. 相似文献
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根据"两型"社会发展要求,本文从低碳视角出发,对比生态城市、低碳城市等评价指标体系,对湖南省13个地级城市建设绩效进行了实证研究。对比分析了13个地级城市在湖南省成为"两型"社会改革实验区前后,在经济发展、社会发展、资源节约、环境保护四个方面的变化。结果表明:在城市经济方面,13个城市呈现东高西低的发展模式,尤其是长株潭城市群经济发展情况明显快于其他地级城市;在城市社会方面,相对于其他方面变化差距最小,其中长沙市提升最快,张家界市变化最慢;在城市资源方面,整体水平相对于其他部分变化较大,其中长沙、邵阳等市的资源消耗较少,老工业基地娄底、岳阳等市资源消耗相对较多;在城市环境方面,大部分城市环境都有所提升。总体上,湖南省13个地级城市的"两型城市"建设,在经济、社会、资源、环境方面都有所提升,但仍存在巨大提升空间,尤其是基础设施建设、科学技术水平、"三废"利用率以及城市环境治理能力方面上升空间较大。 相似文献
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基于分形理论的皖江城市带城镇体系结构研究 总被引:5,自引:0,他引:5
运用分形理论对皖江城市带城镇体系的规模分布和城镇空间结构进行了具体分析,得出如下结论:在城镇规模分布方面,城市规模结构分布较为集中,中等位序的城市较多,首位城市作用不显著,人口分布低水平均衡;在城镇空间结构方面,城镇之间的空间关联程度、空间相互作用一般,空间布局较分散。在此基础上,提出了未来皖江城市带城镇体系发展的相应对策。 相似文献
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孔繁德 《中国环境管理干部学院学报》2012,(6):31-33
按照国家统计局标准,秦皇岛市城市规模已达到大城市标准,应充分发挥辐射带动作用,加快城镇化步伐;抓住城市发展综合效益最佳期的机遇,促进可持续发展;坚持产业结构多元化,各产业协调发展。秦皇岛市生产总值在河北省属中上水平,在沿海开放城市中属落后水平,应尽快提高生产总值;秦皇岛市在科学发展中属比较先进水平,在民生发展方面属先进水平,其中生态方面优势明显,应进一步发挥生态优势,保护环境。秦皇岛市科技创新取得显著成绩,但任务艰巨,必须进一步实施创新驱动发展战略。 相似文献