scholarly journals The Impact of Organizational Collective Efficacy on Residents’ Choice of Urban Renewal Mode and Urban Planning

Author(s):  
Chan Kin-sun ◽  
Zheng Zhongxing ◽  
Zou Yifan
Author(s):  
Qijiao Xie ◽  
Qi Sun

Aerosols significantly affect environmental conditions, air quality, and public health locally, regionally, and globally. Examining the impact of land use/land cover (LULC) on aerosol optical depth (AOD) helps to understand how human activities influence air quality and develop suitable solutions. The Landsat 8 image and Moderate Resolution Imaging Spectroradiometer (MODIS) aerosol products in summer in 2018 were used in LULC classification and AOD retrieval in this study. Spatial statistics and correlation analysis about the relationship between LULC and AOD were performed to examine the impact of LULC on AOD in summer in Wuhan, China. Results indicate that the AOD distribution expressed an obvious “basin effect” in urban development areas: higher AOD values concentrated in water bodies with lower terrain, which were surrounded by the high buildings or mountains with lower AOD values. The AOD values were negatively correlated with the vegetated areas while positively correlated to water bodies and construction lands. The impact of LULC on AOD varied with different contexts in all cases, showing a “context effect”. The regression correlations among the normalized difference vegetation index (NDVI), normalized difference built-up index (NDBI), normalized difference water index (NDWI), and AOD in given landscape contexts were much stronger than those throughout the whole study area. These findings provide sound evidence for urban planning, land use management and air quality improvement.


Urban History ◽  
2016 ◽  
Vol 44 (3) ◽  
pp. 492-515 ◽  
Author(s):  
ALISTAIR KEFFORD

ABSTRACT:This article examines the impact of post-war urban renewal on industry and economic activity in Manchester and Leeds. It demonstrates that local redevelopment plans contained important economic underpinnings which have been largely overlooked in the literature, and particularly highlights expansive plans for industrial reorganization and relocation. The article also shows that, in practice, urban renewal had a destabilizing and destructive impact on established industrial activities and exacerbated the inner-city problems of unemployment and disinvestment which preoccupied policy-makers by the 1970s. The article argues that post-war planning practices need to be integrated into wider histories of deindustrialization in British cities.


Buildings ◽  
2016 ◽  
Vol 6 (4) ◽  
pp. 48 ◽  
Author(s):  
Peter Wootton-Beard ◽  
Yangang Xing ◽  
Raghavalu Durai Prabhakaran ◽  
Paul Robson ◽  
Maurice Bosch ◽  
...  

2018 ◽  
Vol 10 (10) ◽  
pp. 3761 ◽  
Author(s):  
Huafei Yu ◽  
Yaolong Zhao ◽  
Yingchun Fu ◽  
Le Li

Urban rainstorm waterlogging has become a typical “city disease” in China. It can result in a huge loss of social economy and personal property, accordingly hindering the sustainable development of a city. Impervious surface expansion, especially the irregular spatial pattern of impervious surfaces, derived from rapid urbanization processes has been proven to be one of the main influential factors behind urban waterlogging. Therefore, optimizing the spatial pattern of impervious surfaces through urban renewal is an effective channel through which to attenuate urban waterlogging risk for developed urban areas. However, the most important step for the optimization of the spatial pattern of impervious surfaces is to understand the mechanism of the impact of urbanization processes, especially the spatiotemporal pattern of impervious surfaces, on urban waterlogging. This research aims to elucidate the mechanism of urbanization’s impact on waterlogging by analysing the spatiotemporal characteristics and variance of urban waterlogging affected by urban impervious surfaces in a case study of Guangzhou in China. First, the study area was divided into runoff plots by means of the hydrologic analysis method, based on which the analysis of spatiotemporal variance was carried out. Then, due to the heterogeneity of urban impervious surface effects on waterlogging, a geographically weighted regression (GWR) model was utilized to assess the spatiotemporal variance of the impact of impervious surface expansion on urban rainstorm waterlogging during the period from the 1990s to the 2010s. The results reveal that urban rainstorm waterlogging significantly expanded in a dense and circular layer surrounding the city centre, similar to the impervious surface expansion affected by urbanization policies. Taking the urban runoff plot as the research unit, GWR has achieved a good modelling effect for urban storm waterlogging. The results show that the impervious surfaces in the runoff plots of the southeastern part of Yuexiu, the southern part of Tianhe and the western part of Haizhu, which have experienced major urban engineering construction, have the strongest correlation with urban rainstorm waterlogging. However, for different runoff plots, the impact of impervious surfaces on urban waterlogging is quite different, as there exist other influence factors in the various runoff plots, although the impervious surface is one of the main factors. This result means that urban renewal strategy to optimize the spatial pattern of impervious surfaces for urban rainstorm waterlogging prevention and control should be different for different runoff plots. The results of the GWR model analysis can provide useful information for urban renewal strategy-making.


2021 ◽  
Vol 13 (21) ◽  
pp. 12225
Author(s):  
Silvio Cristiano ◽  
Samuele Zilio

An increasing interest has been present in scientific literature and policy making for the links between urban environments and health, as also learnt from the COVID-19 pandemic. Collaboration between urban planning and public health is therefore critical for enhancing the capabilities of a city to promote the well-being of its people. However, what leverage potential for urban health can be found in existing plans, policies, and strategies that address urban health? Starting from the relationship between urban systems and health issues, the purpose of this contribution is to broaden the systemic knowledge of urban systems and health so as to try to figure out the impact potential of local urban governance on public health. Considering the systemic nature of health issues, as defined by the World Health Organisation, this is done through a systems thinking epistemological approach. Urban health proposals are studied and assessed in four European cities (Copenhagen, London, Berlin, and Vienna). Current criticalities are found, starting from the guiding goal of such proposals, yet a systemic approach is suggested aimed at supporting and evaluating lasting and healthy urban planning and management strategies.


2018 ◽  
Vol 10 (1) ◽  
pp. 81-94
Author(s):  
Jelena Radosavljević

This paper aims to open up a discussion about relations between former Yugoslavia's socialism and planning practice resulting from self-managing system established in early 1950s. Although this system was applied through a top-down approach, it implied, at least allegedly, coordination, integration and democratic harmonisation of particular interests with common and general ones on local level. The paper will briefly review the history and concept of socialist ideology and consider the impact that it had on institutional arrangements evolution and planning practice in Serbia. It will then touch on the role of ideology for urban planning process at the local level, understanding self-managing planning principles, their benefits, role and significance in planning practice.


2016 ◽  
Vol 25 ◽  
pp. 1-12 ◽  
Author(s):  
Fredrik Lindberg ◽  
Sofia Thorsson ◽  
David Rayner ◽  
Kevin Lau

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