共查询到19条相似文献,搜索用时 874 毫秒
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以费城生态基础设施规划研究为例,通过案例研究的方法从演进过程、规划方法、规划结构等三个方面对城市生态基础设施进行分析,总结并指出费城生态基础设施网络的构建和评价体系对于我国城市建设的借鉴意义。 相似文献
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我国城镇化转型正进入关键时期,城市化带来的一系列生态环境问题,高污染、高碳排放、缺乏生态功能的传统灰色雨水基础设施难以支撑城市生态建设。绿色雨水基础设施作为城市雨水系统的重要组成部分,对恢复与构建城市良性水循环、保护生态环境起着至关重要的作用。首先强调雨水、水循环与城市发展关系的重要意义,以此为基础,对绿色雨水基础设施的内涵、组成及基于绿色雨水基础设施构建城市良性水循环的水文学基本原理进行了简要阐述,提出以绿色雨水基础设施为基础构建可持续城市雨水系统,并结合实际案例说明绿色雨水基础设施规划设计的具体应用。 相似文献
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吕一诺罗婕颖熊雪倩李婷玉 《中国建筑装饰装修》2023,(1):79-83
暴雨天气引发的城市内涝问题给人们的生产生活和城市的正常运作带来极大影响,如何改变以往的排水模式,改进城市雨水资源管理,已经成为“海绵城市”研究中的重要议题。绿色基础设施理论提出利用自然解决城市问题,在充分利用生态资源的同时,保护城市生态健康。本文以四川省雅安市雨城区为例,径流曲线(Soil Conservation Service-Curve Number,SCS-CN)模型,通过径流模拟、雨洪淹没模拟以及绿色雨水基础设施(Green Stormwater Infrastructure,GSI)选址适宜性分析等方法,识别场地内可进行GSI建设的用地,从而构建GSI网络,以期为解决城市内涝难题、改进城市雨水管理提供借鉴。 相似文献
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由于城市化进程的加速,并伴随着暴雨天气频繁出现,我国很多城市遭遇了不同程度的内涝侵袭,导致一系列的城市环境和安全问题。基于绿色、生态、资源节约、循环利用等低影响开发(LID)理念下的城市绿色雨水基础设施规划建设是缓解我国当前城市发展带来内涝问题的一种有效途径。以安徽省宣城市城东片区雨水排水系统规划为例,介绍了采用LID理念构建绿色雨水基础设施的规划方案,以供参考。 相似文献
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资本扩张驱动伪城市化进程使得
自然资源约束趋紧,推进城市生态文明建设
势在必行。文章论述了现代城市空间模型的
生态转向,提出以绿色基础设施作为城市空
间系统的生态支撑,总结其结构和尺度的空
间特性,强调绿色基础设施在城市空间建
构中的先导作用,探讨一种生态优先的系统
化方法,即“绿色基础设施规划作为脊柱架
构—灰色基础设施规划作为骨架搭建—地
块、建筑等作为组织填充”。结合重庆钓鱼嘴
片区项目实践,剖析该模式的建构过程,论证
重点地段城市设计中绿色先行、灰色协同的
空间结构生成逻辑。 相似文献
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在生态基础设施规划如火如荼的开展过程中不可避免与现行城市规划发生矛盾,基于对生态基础设施规划与城市规划的区别与冲突的探讨,将霍州作为例证,从城市发展方向、建设用地布局与绿地系统等几方面的具体冲突入手,探讨了协调途径。包括溯源城市传统聚落选址,推敲城市发展方向;保留廊道,补充冲突的建设用地;调整道路保证大型斑块的完整性;绿地建设结合EI,增加水系廊道。 相似文献
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为实现精明保护与可持续发展,该文基于绿色基础设施的前沿理念,对城市河道景观规划一体化发展进行研究,探讨如何实现基础设施建设方式由灰色向绿色的转型,为我国建构及完善绿色基础设施系统添砖加瓦,达到"水、绿、人、城"和谐共生。 相似文献
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The main aim of this paper is to assess whether investment in infrastructure and broader institutional infrastructure reforms have been reflected in better infrastructure service provision across transition economies. Our econometric analysis corroborated by case studies evidence shows that at the enterprise level the reduction of utility arrears is significantly associated to lower costs in terms of interruption of power and telecom service provision. This suggests that the discipline exercised by private sector involvement is starting to have some impact. At the country level, our regression results show that increased investment, tariff increases and the establishment of an independent regulator are all significantly associated to the reduction of power and telecom outages. 相似文献
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The problem of airport congestion is treated in the literature analogously to road congestion. However, the phenomenon is different, because entry at airports is not random. Flight delays are a consequence of system overload, even though airport systems operate on carefully planned schedules. Besides uncontrolled for events (e.g. bad weather), airport congestion is a result of decisions of airports’ managers and airlines. These agents are interested in using airport infrastructure too close to its maximum capacity, ignoring the negative impacts caused on passengers. Another characteristic of airport congestion is that it exhibits a cascade-type of effect not present in road congestion: one single delay may generate an impact which accumulates over the next hours. Therefore, congestion pricing should not be identified with peak-pricing as a solution for the problem experienced at airports. In this paper, a theoretical model shows that airport congestion pricing should pursue the internalization of externalities generated by agents’ decisions. Congestion fees charged on airports and airlines should reflect the external costs imposed on each other and on passengers, when they respectively decide the number of slots offered and the tightness of flight schedules. 相似文献
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我国各地区城市基础设施水平的量化研究 总被引:1,自引:0,他引:1
城市是现代文明的标志,是科技、经济、文化、教育的中心,集中体现了国家的综合实力和国际竞争力。而城市基础设施(Urban?? Infrastructure)则是城市的根本,是城市竞争力的重要组成部分,决定着城市发展的方向。本文运用R型因子分析对我国各地区城市基础设施建设水平进行综合评价,并依据基础设施综合得分的高低进行分类。研究表明:浙江省的城市基础设施水平最高,与其他省份相比优势明显。广东省的经济发展虽然迅速,但综合得分并不高,这主要由于广东省垃圾处理因子得分偏低。因此,广东省在兼顾经济增长的同时,应加大垃圾处理力度,才能显著提高城市基础设施水平,实现城市与经济的和谐发展。 相似文献
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An increasing issue in privatised infrastructure is the appropriate incentives needed to ensure adequate maintenance of the infrastructure as a public resource. This paper explores the implications of some of the insights from theories of regulation and contracts for optimal management of transport infrastructure maintenance with respect to the interests of different stakeholder groups: contractors, owners, regulators, governments (subsidy providers or guarantors) and users. Evidence is taken from two UK examples: the major road network and the rail network. The former is seen to be largely a successful involvement of private capital through PFI-style DBFO deals, which has had positive impacts on service quality and cost to the public budget, though arguably less than could have been achieved. The rail network privatisation is seen as a failure in which maintenance was sacrificed in the interests of short-term profit. However, it can also be argued here that the real mistake was to underestimate the quality of the network inherited from British Rail. The paper concludes with some lessons and recommendations taken from the analysis of these two sets of cases. 相似文献
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论基础设施对城市群落空间秩序的影响 总被引:1,自引:1,他引:0
由规模不等的城市、城市集群及与它们紧密联系的环境所组成的城市群落,是一个等级分明、联系密切的完整体系.在这一体系中运行的各种流态是城市发展所需的巨大资源,而基础设施是承载流态的载体.从资源利用的角度看,基础设施主要是通过改变不同层次的城市群落中各个位置的可达性来对空间秩序产生影响的. 相似文献
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我国城市区域基础设施供给制度创新 总被引:1,自引:0,他引:1
由于基础设施的性质与供给制度间的矛盾,区域基础设施建设存在重复建设、供给不足、统筹规划缺乏等问题。应进行城市基础设施的供给制度创新,包括:城市基础设施供给组织体系建设、利益分享与利益补偿制度、投资监督制度、市场运行机制等内容。 相似文献