首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 15 毫秒
1.
    
The introduction of automated vehicles (AVs) is a virtual certainty. Much less certain is the timing of their introduction and how rapid the transition to full automation will be. Various governments are already working to facilitate this shift by, for example, amending and elaborating regulations to support the introduction of AVs, or supporting tests in different urban environments. Meanwhile, urban and regional planners and decision-makers are still grappling with the uncertainties and differing opinions about the possible impacts of AVs on land-use changes and location choices, particularly in relation to the space available for vehicles, both moving (i.e. roadspace) and stationary (i.e. parking space). This paper uses a backcasting approach to identify critical policy decisions and measures to be taken before the implementation of AVs, so as to achieve a more desirable, attractive and high-quality city. These policy measures primarily relate to the reuse and reallocation of parking and roadspace. Two strategic decisions are found to be essential to meet the major goals of sustainable and liveable cities: a clear commitment to a shared mobility and the delimitation of Core Attractive Mixed-use Spaces (CAMS). In order to deliver these desired urbanisation patterns, a set of three policy paths, involving eight policy packages, is proposed for the next 20–30 years. This article provides urban and regional decision-makers with examples of interventions that can be implemented beyond and during the implementation of AVs.  相似文献   

2.
    
Measuring the degree of urban sprawl largely depends on the local context and available data. This research establishes a multidimensional index which combines city expansion, urban compactness and urban form to measure sprawl. Urban planning, as part of the state-led growth approach, has exerted dramatic impact on city growth in China. Recent studies have discussed the role of planning in city growth. However, measuring the impact of planning on sprawl, has not been conducted. Taking Shanghai as a case study, this paper builds a multidimensional index to measure the spatio-temporal characteristics of urban sprawl in Shanghai from 1990 to 2010. It finds that urban sprawl was more serious in 2000s than in the 1990s, and the sprawl also presents spatial heterogeneity within different areas of the city. While quantifying the role of planning in urban sprawl, this study adopts the Geo-Detector based on spatial variation analysis of the geographical strata in order to assess the impact of planning on urban sprawl. It finds that planning is strongly correlated with urban sprawl, in other words, urban sprawl is kind of a \"planned sprawl\" in Shanghai. The research concludes with future planning policies necessary for a more sustainable and compact development pattern.  相似文献   

3.
Watershed management in an urban setting: process, scale and administration   总被引:2,自引:0,他引:2  
Efforts in post-industrial countries to refine environment and planning administration in the face of unprecedented urban growth have important implications for ecological systems and human quality of life. This paper uses the case of an urban riparian corridor in South East Queensland, Australia to contribute to understandings of interactions between land use planning processes, watershed management initiatives and broader administrative structures in urban and rapidly urbanising settings. In particular it examines the understudied application of watershed management to an urban setting. Analysis of changes to the structure and function of urban riparian corridor management over time show that changes have occurred as a result of broader policy and institutional change in three distinct phases: top-down watershed management policy (1996-2000), regional natural resource and population growth management policy (2001-2005) and the recent re-emergence of local government as the dominant actor in a multilevel networked context (2006-2008). Trends toward regional scale approaches and increased urban planning initiatives have tended to concentrate responsibilities for urban environmental management with local government. This is in contrast to most rural natural resource management experience, and highlights the importance of meta-governance frameworks in ensuring the enduring applicability of the watershed management model to urban and rapidly urbanising catchments.  相似文献   

4.
文章从当前两规协调研究现状入手,分析两规的异同点及其协调的难点和重点,在此基础上,进一步揭示两规协调宏观和微观层面上存在的重点问题。文章指出上端规划功能缺位和建设用地规模口径不一致是两规协调中急待解决的关键问题,最后提出针对解决这些关键问题的路径和方法。  相似文献   

5.
In the years 2006–2014, urban planning reform was seen as the major remedy against housing shortage in Sweden. The present government has the continuation of such reform on its agenda, but as of yet has made no proposals; instead, other housing policy measures have been introduced.In light of the uncertainty as to the future course of urban planning reform, possible future steps can be discussed. This article accordingly investigates whether German urban planning law and implementation could provide interesting reference points for discussion of further urban planning reform in Sweden, and if so, what parts of the German experience should be the center of attention.The article covers three aspects of German planning that influence the uncertainty, duration, and cost of residential planning as well as social goals addressed through planning: planning law, focusing on facilitated planning procedures of German planning law, measures taken in the organization of planning authorities to make development planning more efficient, and planning-related city demands for affordable housing.The conclusions encompass proposals for the further reform of the Swedish planning process in the form of a facilitated and accelerated development planning procedure for housing projects, as well as the introduction of private initiative in development planning. Further improvements to the organization and incentives of planning authorities are proposed. More research is required into municipal demands for affordable housing in the form of inclusionary zoning; such research should draw on the extensive international experience of such zoning, relating it to a Swedish pilot project.  相似文献   

6.
The growing concerns of climate change require implementing measures to quantify, to monitor and to minimize greenhouse gas (GHG) emissions. Nonetheless, most of the measures available are not easy to define or execute because they rely on current emissions and have a corrective character. To address this issue, a methodology to characterize GHG emissions that allows implementing preventive measures is proposed in this paper. The methodology is related to household urban planning procedures and considers urban infrastructures to characterize GHG emissions and to execute preventive measures based on sustainability design criteria. The methodology has been tested by applying it to a set of medium-sized municipalities with average GHG emissions from 6,822.32 kgCO2eq/year to 5,913.79 kgCO2eq/year for every residential unit. The results indicate that the greatest pollutant source is transport, especially in the issuance of street network design, followed by gas and electricity consumption. The average undevelopable land area required for the complete GHG emissions capture amounts to 3.42 m2 of undevelopable land for every m2 of urbanizable land and 9.02 m2 of undevelopable land for every m2 of built land.  相似文献   

7.
Urban planners are increasingly interested in agriculture around cities and have to decide whether to maintain or not areas of agricultural land use within and close to growing cities. There is therefore a need for researchers to design tools to guide public decision-making on land use. Various approaches, originating from different disciplines, may be adopted in this respect. We designed an interdisciplinary research program in order to test two related concepts: the “sustainability” and the “multi-functionality” of agriculture. We show that these concepts provide a useful framework for obtaining appropriate knowledge about urban agriculture, which urban planners could apply in real situations. In close collaboration with urban planners, we applied an interdisciplinary research methodology, based on common farm surveys and territorial approaches, to the Antananarivo area (Madagascar). The main functions analyzed were the food production and environmental roles of urban agriculture. Two aspects of sustainability were assessed: the farm sustainability and the territorial sustainability, with expert scores. This approach identified a wide diversity of farming systems that performed differently, depending on their intra- or suburban location. The food supply function appeared to be important not only for fresh produce but also for rice consumption. The function of protection against flooding is now important and this importance will increase with climate change. A diagnosis of sustainability was made and discussed with urban planners: several farming systems and zones were identified in which agriculture was considered important as a means of maintaining or developing the food supply, employment and incomes, and even landscape or environmental quality. We also identified other areas in which poor production conditions and/or the negative effects of urbanization on agriculture jeopardized its sustainability. This methodology appeared to be useful for determining the most appropriate role of urban agriculture in the land-use planning of this city. Our study raises new questions on the subject and should lead to more focused research programmes. We discuss several points of interest and the limitations and possible extension of this method.  相似文献   

8.
甘肃省阿克塞哈萨克族自治县夏季鸟类调查   总被引:1,自引:0,他引:1  
1997-05-08在甘肃省西部阿克塞哈萨克族自治县境内进行了野外鸟类调查;调查的生境类型包括山区,沙漠,戈壁,草原,湖泊;采用路线观察和定点观察的方法统计鸟类种类和数量;共记录鸟类67种,分属10目,22科。  相似文献   

9.
Ecosystem-based adaptation (EbA) measures have been increasingly promoted in the literature, as well as in policies and practices, for their environmental and socio-economic co-benefits. The recent scientific literature has shown a growing interest to assess climate adaptation plans at the urban level, in recognition of the important role played by urban areas in addressing climate change challenges. However, little information is available on the combination of these two issues, i.e., the actual inclusion of EbA measures in climate adaptation plans at the urban level. This paper addresses this gap by developing a framework to analyze the treatment of EbA in urban level climate planning, and apply it to a sample of climate adaptation plans in Europe. The framework consists of a classification of EbA measures, and a scoring system to evaluate how well they are reflected in different components of the plans. The results suggest that there is in general good awareness in plans of EbA measures, and of their potential role in addressing climate change challenges. However, their treatment in climate adaptation plans at the urban level often lacks sufficient baseline information, as well as convincing implementation actions. The paper concludes by offering recommendations to improve future practice, in terms of enhancing the baseline information to improve the proposal and design of EbA measures, improving the treatment of co-benefits associated to EbA measures, and strengthening coordination with other planning tools. Possible future development of this works include the integration of the proposed EbA classification, and the analysis of a larger sample of territorial plans.  相似文献   

10.
    
This paper aims to estimate the non-market benefits derived from the potential development of a new urban park in the city of Thessaloniki (Greece). The city of Thessaloniki has up to now a very low rate of proportional green space per capita. On this context a large metropolitan park was announced, as part of a large-scale redevelopment project, but the final decision has not been made yet. In order to help policy makers to their final decision, an ex-ante valuation of the potential benefits of the park is carried out in this study. A contingent valuation survey was designed and implemented aiming to estimate the willingness to pay of local residents for the provision of this park, as well as to determine the spatial scale at which these values are assessed. The main finding of this study is that people living within 20 min from the reference site are willing to contribute a significant amount of money to support this project. Another interesting outcome is that the willingness to pay for this project was not considerably modified during a period of economic recession (2010–2013), which is mainly due to the growing public awareness of the importance of green spaces, as well as of the benefits of the planned park.  相似文献   

11.
Amnon Frenkel   《Land use policy》2004,21(4):357-369
The debate over the effectiveness of growth-management policies reinforces the importance of empirical studies in this field, which has become not just relevant but also crucial to many places. Israel, through its spatial national-level planning, experienced especially during the 1990s, presents an empirical example that may be used to address a complementary strategy to the one that is most commonly used, as this paper suggests. This strategy is based on an examination of the future potential impact of growth-management tools proposed by national plans on the depletion of open space and farmland versus the consequences expected from the continuation of current trends. Accordingly an appropriate methodology is introduced for implementing this strategy.  相似文献   

12.
Metro Vision 2020 is a collaborative effort to manage growth in metropolitan Denver. Based on interviews, surveys and document analysis, an evaluation revealed that it was a well-managed process that raised awareness about growth problems. The efforts also resulted in an approved regional plan that initiated an innovative urban growth boundary policy. However, the lack of broad-based participation, limited understanding of policy effects, and inadequate implementation tools raised doubts about long-term effectiveness. The broader implications are that collaboration at the metropolitan scale needs to explore more participatory models, stronger implementation tools, and institutional structures that will support consensus.  相似文献   

13.
Irit Amit-Cohen   《Land use policy》2005,22(4):291-300
The old urban center of Tel Aviv, like other urban centers in the western world, is undergoing accelerated development processes. Together with the trend towards gentrification are processes of urban renewal and infrastructure development and increasing demand for land and buildings, all of which increase the value of the land. The difference between Tel Aviv and other cities in the western world, as well as in Israel, is its young age and its quick pace of change. The old urban center of Tel Aviv is unique in that it is less than one hundred years old and is changing rapidly. Tel Aviv, which in 1909 was a small suburb of Jaffa, has evolved into an independent city, which is today the center of economic and cultural activities in Israel. Tel Aviv's short but significant history, together with its rapid changes, creates its image as an active and vivid metropolis with embedded heritage values. However, rapid development brings with it dilemmas. On the one hand, urban planners, tourists and entrepreneurs identify the center of town with its historical nucleus and heritage values. On the other hand, the rapid development and need for urban renovation are clearly in conflict with the need to preserve Tel Aviv's historical values and unique qualities. The purpose of this paper is to demonstrate that conservation of built heritage and urban development in ‘Young Tel Aviv’ can coexist and synergistically support each other, and that the historical values have economic potential, which may contribute to urban development. Heritage values can be formulated and even artificially produced to promote urban development. Although Israel has many very old cities with universal historical values, the young city of Tel Aviv is at the forefront of conservation.  相似文献   

14.
    
Upzoning typically occurs as a passive process whereby landowners approach the municipality for a change of rights. Proactive upzoning, where a municipality takes the initiative to increase the rights assigned to land in its jurisdiction, can be a powerful tool to encourage development to occur in line with municipal policies. This paper firstly describes the various approaches used to achieve proactive upzoning. The focus then shifts to understanding examples of proactive upzoning in South(ern) Africa, which provide examples of policy transfer of ideas, primarily from the Northern into a Southern context. Four key lessons are identified from this discussion. Firstly, proactive upzoning can affect the poor negatively or positively, depending on the design of the initiative. Secondly, from South African experience, it is clear that there is a danger of proactive upzoning examples from the North being copied almost verbatim and applied in a Southern context, despite the considerable differences in context. Thirdly, there is a need to ensure that initiatives are in line with market dynamics, to avoid ‘wasted’ infrastructure investment. Fourthly, proactive upzoning often just considers zoning schemes’ rights, whereas the land development process can face a slew of regulatory constraints beyond the zoning scheme.  相似文献   

15.
    
With its inception in urban studies in the 1930s, the notion of urban sprawl was institutionalised and globalised. However, urban sprawl research has mostly focused on developed countries compared with the situation in African countries. To address part of this gap, this paper appraises urban sprawl in Ghana, using Ejisu a peri-urban area of Kumasi as a case study in order to understand its characteristics, causes and effects on urbanites and urban functionality. Household and physical surveys, agency interviews and document reviews were used. Findings indicate that urban sprawl in Ejisu has spatial and aspatial characteristics, and is occurring in the absence of basic infrastructure services such as water and sanitation, and has become an extra yoke on urban planning agencies who are already faced with limited personnel and logistical capacity.  相似文献   

16.
The main aim of this paper is to examine ways to integrate urban climate information into urban planning using spatially distributed information. To achieve this, the structures of urban planning in the study area and their contents concerning climate issues were examined. Spatially distributed information on ventilation, air quality and thermal situation in the study area was generated using the CAMPUS framework, which is a set of climate analysis and evaluation tools suitable for planning purposes. Finally, urban planning strategies concerning ventilation, air quality and thermal situation were suggested, and planning measures for implementing the planning strategies were recommended. This study will contribute to a discussion on how urban climate information can be more efficiently considered in urban spatial planning. Furthermore, the information generated in this study can support the development of an evaluative framework for the integration of the climate information into the environmental assessment process, e.g. the implementation of strategic environmental assessment (SEA) in urban planning.  相似文献   

17.
    
Over the past centuries, cities have undergone major transformations that led to global urbanization. One of the phenomena emerging from urbanization is urban sprawl, defined as the uncontrolled spread of cities into undeveloped areas. The decrease in housing prices and commuting costs as well as the failure to internalize the real costs associated with natural land, led to households moving-out into the urban fringe – resulting in fragmented, low-density residential development patterns that has multiple negative impacts. Awareness for this problem has fed the need for the implementation of effective policies against urban residential sprawl – a subject that has received considerable attention in literature, albeit little attention has been given to economic incentive instruments. Hence, the objective of this paper is to assess the effectiveness of different economic instruments in steering urban residential sprawl – assessing property taxes, land taxes and public transport subsidies. To this end, the Sustainable Urbanizing Landscape Development (SULD) model is used and adapted, and a case study is provided for the medium-sized City of Aveiro in central Portugal. Results show that a flat property tax and a public transport subsidy for low and middle-income households are the most efficient instruments, leading to a decrease in urban residential area, living space and housing quantity as well as an increase in real estate values. On the other hand, a land tax results in insignificant changes in urban residential development patterns.  相似文献   

18.
    
The construction of new high-speed rail (HSR) lines, in a climate of financial instability since the onset of the global crisis of 2007–2008, has reopened the debate among the scientific community. Support for the new projects is facing serious concerns over the extremely elevated costs of high-speed and the ability of today's governments to fund or co-fund these systems. This is the main reason the assessment of methodologies to prioritise the construction of new high-speed rail (HSR) corridors has recently become an important issue for transport planners in countries like the U.S. where HSR does not exist.The literature on ranking tools for prioritising HSR corridors is practically non-existent, even in Europe. In 2009, a new ranking methodology was developed and applied to 30,000 city pairs in the U.S. to determine their suitability for high-speed rail investment. As none of these lines has been constructed and none of them are in operation, this methodology has not been validated. The main objective of this paper is to analyse, validate and improve this ranking tool using data from a current HSR network: the Spanish one. Results show the consistency of the model as a preliminary approach to ranking pairs, mainly for the top first O–D relations; however the model fails to discriminate clearly between secondary groups of corridors. These deficiencies are chiefly due to the type of variables used by the model which ultimately, after improved, would provide policymakers with a useful tool when planning the construction of a new HSR network.  相似文献   

19.
The study conducts a legal and economic analysis comparing the new Consolidated Text of the Land Use Act of 2008 (Texto Refundido de la Ley de Suelo) and the Land Law 6/1998, April 13 now repealed. The study examines various articles contained in the new law and the old law. Although the study analyzes every title in both laws, it focuses on Title III regarding valuations for the expropriation of property owners.  相似文献   

20.
This study explores local people’s attitudes towards urban planning, and the effects of development benefits on local support for planning in Kumasi, Ghana. Kumasi is a rapidly urbanising city in Ghana where urban growth between 2000 and 2010 exceeded 5%, and where local support for urban planning has not been studied adequately. Based on Kumasi Metropolitan Assembly, Town and Country Planning Department and Ghana Statistical Service’s residential area classifications, household survey with 360 respondents were conducted in nine high, middle and low class neighbourhoods in Kumasi, in addition to interviews with six representatives from two planning agencies. Results indicated that two-thirds of the household respondents were positive towards urban planning and support urban planning. The household respondents were aware that more development benefits are possible from an inclusive and pro-poor urban planning. There appears to be correlation between development benefits obtained by local people from urban planning, and support for urban planning, indicating that development benefits impact people’s attitudes towards urban planning. Some of the main problems are social and spatial inequity among people living in different classes of residential neighbourhoods, and lack of locals’ inclusion in urban planning and management. There is a need to clearly address these issues, so that urban planning may get the support of local people which may lead to sustainable urban development.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号