scholarly journals Does Urban Sprawl Inhibit Urban Eco-Efficiency? Empirical Studies of Super-Efficiency and Threshold Regression Models

2019 ◽  
Vol 11 (20) ◽  
pp. 5598 ◽  
Author(s):  
Qian Zhang ◽  
Huaxing Zhang ◽  
Dan Zhao ◽  
Baodong Cheng ◽  
Chang Yu ◽  
...  
Keyword(s):  
Urban Environment ◽  
Urban Sprawl ◽  
Threshold Effect ◽  
Western China ◽  
Threshold Regression ◽  
Rapid Urbanization ◽  
Super Efficiency ◽  
Negative Effect ◽  
The Impact ◽  
The City

With rapid urbanization in China, the phenomenon of urban sprawl has become prominent and has severely challenged sustainable urbanization and ecological civilization. Aiming to understand the impact of urban sprawl on the urban environment, this study calculates the eco-efficiency of 264 prefecture-level cities in China from 2003 to 2016 by using a super-efficiency data envelopment analysis model. Then, we establish a panel Tobit model and threshold regression model to empirically test the impact of urban sprawl on eco-efficiency and the threshold effect of the urban scale. The results show that urban sprawl hinders the improvement of urban eco-efficiency, especially in Eastern China, but relatively weak or even insignificant effects are observed in Central and Western China. Additionally, a threshold effect of urban sprawl on eco-efficiency can be found. When the city scale is small, urban sprawl seriously hinders the improvement of eco-efficiency. As the city scale gradually expands, the negative effect of urban sprawl on eco-efficiency first decreases, then the restraining effect is gradually strengthened. Our research findings can aid urban development in cities with different scales to reduce the negative effect of urban sprawl on the urban environment.

scholarly journals The Impact of Urban Recreation Environment on Residents’ Happiness—Based on a Case Study in China

2021 ◽  
Vol 13 (10) ◽  
pp. 5549
Author(s):  
Lei Kang ◽  
Zhaoping Yang ◽  
Fang Han
Keyword(s):  
Low Income ◽  
Subjective Evaluation ◽  
Objective Evaluation ◽  
Income Group ◽  
High Income Group ◽  
Rapid Urbanization ◽  
Indirect Impact ◽  
Negative Effect ◽  
The Impact ◽  
Urban Recreation

Rapid urbanization promotes the expansion of urban tourism and recreation functions, but it also brings many problems, which affect residents’ happiness. Previous studies have emphasized the direct impact of urban recreation environment on happiness, and few have explored the indirect impact of urban recreation environment on happiness through subjective evaluation. Based on the survey data of nearly 10,000 permanent residents in 40 key tourism cities in China, this paper establishes a theoretical framework of the direct and indirect impact of urban recreation environment on happiness. The objective evaluation of natural recreation environment and sociocultural recreation environment has an important influence on happiness, but the influence of natural recreation environment is greater than that of sociocultural recreation environment. Individual subjective satisfaction with urban recreation environment mediates the relationship between urban objective environment and happiness. Urban parks have a positive effect on happiness, while tourist attractions have a negative effect. The influence of urban location on happiness is nonlinear. The high-income group is more sensitive to the recreation environment, while the low-income group is less sensitive to the recreation environment. These findings provide insights for further improving citizens’ quality of life and designing urban construction in developing countries under the conditions of rapid urbanization.

scholarly journals Seasonal Variations of Daytime Land Surface Temperature and Their Underlying Drivers over Wuhan, China

2021 ◽  
Vol 13 (2) ◽  
pp. 323
Author(s):  
Liang Chen ◽  
Xuelei Wang ◽  
Xiaobin Cai ◽  
Chao Yang ◽  
Xiaorong Lu
Keyword(s):  
Surface Temperature ◽  
Land Surface Temperature ◽  
Land Surface ◽  
Vegetation Index ◽  
Normalized Difference Vegetation Index ◽  
Maximum Temperature ◽  
Maximum Temperature Difference ◽  
Rapid Urbanization ◽  
The Impact ◽  
The City

Rapid urbanization greatly alters land surface vegetation cover and heat distribution, leading to the development of the urban heat island (UHI) effect and seriously affecting the healthy development of cities and the comfort of living. As an indicator of urban health and livability, monitoring the distribution of land surface temperature (LST) and discovering its main impacting factors are receiving increasing attention in the effort to develop cities more sustainably. In this study, we analyzed the spatial distribution patterns of LST of the city of Wuhan, China, from 2013 to 2019. We detected hot and cold poles in four seasons through clustering and outlier analysis (based on Anselin local Moran’s I) of LST. Furthermore, we introduced the geographical detector model to quantify the impact of six physical and socio-economic factors, including the digital elevation model (DEM), index-based built-up index (IBI), modified normalized difference water index (MNDWI), normalized difference vegetation index (NDVI), population, and Gross Domestic Product (GDP) on the LST distribution of Wuhan. Finally, to identify the influence of land cover on temperature, the LST of croplands, woodlands, grasslands, and built-up areas was analyzed. The results showed that low temperatures are mainly distributed over water and woodland areas, followed by grasslands; high temperatures are mainly concentrated over built-up areas. The maximum temperature difference between land covers occurs in spring and summer, while this difference can be ignored in winter. MNDWI, IBI, and NDVI are the key driving factors of the thermal values change in Wuhan, especially of their interaction. We found that the temperature of water area and urban green space (woodlands and grasslands) tends to be 5.4 °C and 2.6 °C lower than that of built-up areas. Our research results can contribute to the urban planning and urban greening of Wuhan and promote the healthy and sustainable development of the city.

Analysis of the Urban Environment Needs Based on the Residents’ Perspective

2012 ◽  
Vol 524-527 ◽  
pp. 2766-2769
Author(s):  
Yong Chun Wu ◽  
Xin Kui Liu ◽  
Lian Feng Xu
Keyword(s):  
Urban Development ◽  
Social Development ◽  
Human Development ◽  
Urban Environment ◽  
Urban Sprawl ◽  
Environmental Damage ◽  
City Environment ◽  
The People ◽  
True Meaning ◽  
The City

Create a good city environment is an eternal theme of human development. The urbanization has brought not only economic and social development, but also urban sprawl and environmental damage, which make the city become a tool to complete various functions and no longer suitable for residents to live. A strange phenomenon appears that the more development of the city, the lower residents’ satisfaction to the urban environment. This article argues that meeting the needs of the people is the true meaning of urban development, and discusses the needs of the residents to the urban environment.

scholarly journals Depressed spaces as an instrument for transformation of urban areas

2020 ◽  
Vol 217 ◽  
pp. 02008
Author(s):  
Valentina Kurochkina
Keyword(s):  
Urban Planning ◽  
Urban Environment ◽  
Urban Areas ◽  
Planning System ◽  
Urban Systems ◽  
Social Significance ◽  
The Creation ◽  
The Impact ◽  
The City

Recently, more and more often urban abandoned and depressed spaces that were previously used as industrial facilities or temporarily used are becoming the sphere of architectural and landscape transformations. These territories can occupy a significant part of the city. This paper examines the features of the formation of urban planning systems, as well as the impact of depressed spaces on the quality of the urban environment. This paper studies such depressed spaces as abandoned industrial areas and objects of unfinished construction. The paper assesses the impact of depressed spaces, identifies criteria that reflect the nature, scale and features of their impact on the environment, on the safety and quality of the urban environment, as well as their role in the structure of the city as a whole. The principles and features of the formation of such urban depressed spaces, as well as the patterns of their development are revealed. The features of the formation of open public space of urban systems, as well as ways of transforming depressed spaces, aimed at increasing their social significance, integrating them into the general urban development, and improving the ecological and social situation are considered. The paper concludes that the problem of restoration of depressed spaces is very important and urgent today. The creation of a continuous urban tissue is impossible without the reorganization of such spaces, as well as the creation of an integral compositional, functional and communication urban planning system.

scholarly journals Evaluation of nature-based solutions implementation scenarios, using urban surface modelling

2021 ◽  
pp. 1-42
Author(s):  
Emmanuel Panagiotakis ◽  
Dionysia Kolokotsa ◽  
Nektarios Chrysoulakis
Keyword(s):  
Heat Flux ◽  
Relative Humidity ◽  
Urban Environment ◽  
Air Temperature ◽  
Green Infrastructure ◽  
Model Simulation ◽  
Meteorological Data ◽  
Sensible Heat Flux ◽  
The Impact ◽  
The City

The present paper aims to study the impact of Nature Based Solutions (NBS) on the urban environment. The Surface Urban Energy and Water balance Scheme (SUEWS) is used to quantify the impact of NBS in the city of Heraklion, Crete, Greece, a densely built urban area. Local meteorological data and data from an Eddy Covariance flux tower installed in the city center are used for the model simulation and evaluation. Five different scenarios are tested by replacing the city’s roofs and pavements with green infrastructure, i.e., trees and grass, and water bodies. The NBS impact evaluation is based on the changes of air temperature above 2m from the ground, relative humidity and energy fluxes. A decrease of the air temperature is revealed with the highest reduction (2.3%) occurring when the pavements are replaced with grass for all scenarios. The reduction of the air temperature is followed by a decrease in turbulent sensible heat flux. For almost all cases, an increase of the relative humidity is noticed, accompanied by a considerable increase of the turbulent latent heat flux. Therefore, NBS in cities change the energy balance significantly and modify the urban environment for the citizens' benefit.

scholarly journals O CICLO MINERAL E A URGÊNCIA DE POLÍTICAS DE DESENVOLVIMENTO LOCAL: o caso do município de Parauapebas no sudeste do Estado do Pará

2015 ◽  
Vol 18 (2) ◽  
pp. 603
Author(s):  
José Raimundo Barreto Trindade ◽  
Wesley Pereira de Oliveira ◽  
Gedson Thiago Do Nascimento Borges
Keyword(s):  
Necessary Conditions ◽  
Local Development ◽  
Mineral Exploration ◽  
Local Economy ◽  
Demographic Expansion ◽  
Rapid Urbanization ◽  
Development Policies ◽  
The Impact ◽  
The City ◽  
Shed Light

Este artigo analisa o caso do município de Parauapebas no estado do Pará, porém sem descurar do seu entorno, centrado nas condições de desenvolvimento econômico do espaço territorial e as contradições sociais estabelecidas. O objetivo do artigo é lançar luz sobre as contradições do acelerado processo de crescimento econômico e demográfico decorrente do ciclo de acumulaçãomineral e as necessárias condições de estabelecimento de políticas locais que ensejem uma dinâmica de desenvolvimento distinta da atual base de exploração mineral. Primeiramente aborda a expansão demográfica e a acelerada urbanização; a seção seguinte trata especificamente dos aspectos de empregabilidade e os impactos da mineração sobre o mercado de trabalho; a terceira seção analisa o ciclo extrativista mineral e suas limitações; a quarta seção trata das repercussões sobre a renda local e o produto interno bruto; finalmente, na última seção, trata especificamente das políticas de desenvolvimento local, tendo a tese central de que é necessário desde já preparar a economia local para uma possível transição do ciclo mineral.Palavras-chave: Parauapebas, mineração, desenvolvimento local.THE MINERAL CYCLE AND THE URGENCY OF LOCAL DEVELOPMENT POLICIES: the case of the city of Paraupebas in the southeast of the state of ParáAbstract: This article analyzes the case of the municipality of Parauapebas in Para State, but without neglecting its surroundings,focusing on the conditions of economic development of territorial space and social contradictions established. The purpose of this article is to shed light on the contradictions of the accelerated economic and demographic growth due to the cycle of accumulationand mineral necessary conditions for the establishment of local political dynamics that cause development distinct from the currentbase of mineral exploration. The article is divided into five parts. In the first section we discuss the demographic expansion and rapid urbanization, the second section deals specifically with the issues of employability and the impacts of mining on the labor market,the third section is intended to analyze the mineral extractive cycle and its limitations, the fourth section deals with the impact on local income and gross domestic product, and finally, in the fifth section, it is specifically the local development policies, much as propositions and having the central thesis that is needed now to prepare the local economy for a possible transition of the mineral cycle,including seeking to use the current momentum to structure a sustainable pattern of production bases in endogenous development.Key words: Parauapebas, mining, local development.

scholarly journals Urban water bodies as the basis for functioning of public spaces

2020 ◽  
Vol 217 ◽  
pp. 02005
Author(s):  
Valentina Kurochkina
Keyword(s):  
Urban Planning ◽  
Urban Environment ◽  
Urban Space ◽  
Public Spaces ◽  
Water Bodies ◽  
High Rate ◽  
The Creation ◽  
The Impact ◽  
The City

Recently, housing construction in cities has been carried out at a high rate. Increasingly, urban abandoned and flooded depressive spaces near water bodies (often rivers), which were previously used as industrial facilities or temporarily used, are becoming the sphere of architectural and landscape transformations. The restoration of such territories helps to improve the quality of urban space and improve its ecological properties. Correct development of territories near rivers and various water bodies has a great health-improving effect on the urban environment, improves its natural and climatic conditions. In addition, social and economic factors play an important role in this process, since such transformed territories and territories adjacent to them significantly increase investment attractiveness. This paper examines modern approaches to the development of urban public spaces, based on the formation of architectural environments that ensure the relationship of urban development with water bodies and adjacent territories. The paper notes that water bodies are not only an important component of the natural-ecological framework, but are also the basis for the framework of urban-planning natural-technogenic systems as a whole. And the creation of a continuous urban fabric is impossible without the organization of a ‘water’ line of development, provision of compositional, functional and communication interconnection of open urban and water spaces, which is actively being introduced today in architectural and urban planning practice. The paper examines the role of water bodies in the ecological system of the city, as well as in its structure as a whole. The aim of the study is to identify the features of the formation of a public urban space, to determine the patterns of its development, to identify criteria that reflect the nature, scale and features of the impact of urbanization on a water body. Some principles of revitalization of coastal areas, as well as the creation of a system of publicly accessible, compositionally expressive spaces are considered. The principles of space transformation aimed at the formation of a holistic image of the city, as well as the impact of such a spatial arrangement of urban and water bodies on the safety and quality of the urban environment are considered.

scholarly journals Ensuring the sustainable development of the city park-estate “Ostankino” in Moscow

Vestnik MGSU ◽  
2021 ◽  
pp. 1115-1123
Author(s):  
Mihail A. Slepnev ◽  
Anna A. Ryazantseva
Keyword(s):  
Sustainable Development ◽  
Urban Environment ◽  
Anthropogenic Impact ◽  
Simple Calculation ◽  
Field Work ◽  
Urban Ecosystem ◽  
Practical Aspect ◽  
Natural Frame ◽  
The Impact ◽  
The City

Introduction. Providing the natural frame of the city as a sustainable system of landscaping and water areas in the urban environment is one of the tasks aimed at preserving the natural frame of the urban environment. The article focuses on the influence of the recreational load on the natural-anthropogenic territorial complex (PATC) located in the North-Eastern administrative region of Moscow. To ensure sustainable development of natural areas, the ability of the components of the natural environment to self-heal under conditions of anthropogenic impact is of particular importance. Taking into account the increase in residential and industrial areas located in close proximity to natural zones, the anthropogenic impact on natural complexes is increasing. First of all, this affects the recreational areas of park zones, where the potential recreational load begins to exceed the stan­dardized and causes degradation of green spaces and disruption of the urban ecosystem. Recreational load affects the state of the natural complex of the city, and its value is determined by the planning structure of urban development. While ensuring the safety of city parks, it becomes necessary to work with complete and reliable information, which can only be obtained through research. The practical aspect of scientific research, considered in the article, includes the results of the analysis of the impact of anthropogenic load on the natural-anthropogenic territorial complex of the park - the estate “Ostankino”. Materials and methods. The paper uses various attributive information collected from open sources and based on the results of field work by the authors, legal documents, and various cartographic materials. The calculation of potential visitors was carried out by a simple calculation method, followed by the use of the Microsoft Office Excel software product to compile the time dependencies of the visit. Results. On the basis of the conducted research, the excess of the normative value of the recreational load of the territory of the Ostankino estate park in Moscow was revealed and graphs of the dependence of the visit on the time intervals were constructed. Conclusions. The increased rate of population inflow and environmental pollution leads to the transformation of the ecological framework of the city.

scholarly journals Urban soils: the results of the study of the territory of the city of Ekaterinburg

2021 ◽  
Vol 937 (2) ◽  
pp. 022004
Author(s):  
O Mezenina ◽  
A Mihailova ◽  
M Kuzmina ◽  
A Grigorieva
Keyword(s):  
Chemical Composition ◽  
Urban Environment ◽  
Land Management ◽  
Urban Soils ◽  
The State ◽  
Actual Distribution ◽  
Economic Mechanism ◽  
Complete Study ◽  
The Impact ◽  
The City

Abstract In this article, we will consider the interesting, in our opinion, presented data of practitioners and scientists in terms of studying the formation and composition of urban soils, which is the most objective and stable indicator of man-made pollution, it clearly reflects the spread of pollutants and their actual distribution in the components of the urban environment. In this article, we have only shown the results of the analysis of the soils of g.For the period of the last 10 years, it is possible that for conclusions about the impact of the existing situation of the city territory on the entire environment, a more complete study of not only the chemical composition of soils, but also the impact of the economic mechanism of land management on the state of the city is necessary, the authors have not yet set themselves such a task.

scholarly journals Car ownership and commuting mode of the “original” residents in a high-density city center: A case study in Shanghai

2021 ◽  
Vol 14 (1) ◽  
pp. 105-124
Author(s):  
Tao Chen ◽  
Haixiao Pan ◽  
Yanbo Ge
Keyword(s):  
Public Transportation ◽  
Central Area ◽  
High Density ◽  
Easy Access ◽  
Urban Structure ◽  
City Center ◽  
Rapid Urbanization ◽  
Multinomial Logistic Model ◽  
The Impact ◽  
The City

As a result of rapid urbanization and motorization in China, numerous mega-cities have emerged, and large numbers of people live and work in the city centers. Consequently, developing a public transport-oriented urban structure and promoting sustainable development are major planning strategies for the country. To understand the impact of rail transit on motorization in a high-density city center, we conduct a household travel survey in three neighborhoods around metro stations in the central area of Shanghai. We examine the car buying and commuting behavior of those Shanghai “original” residents who lived there when the city began growing, engulfing them in the center. Studies have shown that 40 percent of commuters in the city center commute outward, following a virtually reversed commute pattern, and the factors significantly affecting their car purchasing choice include their attitude toward cars and transit, household incomes, ownership of the apartments they live in, and the distance between family members’ workplaces and nearest metro stations. Despite easy access to the metro from their home in the city center, those who purchase their apartment units also likely own a car, while those who rent their apartment units are less likely to own a car; however, these odds are still higher than for those who live in an apartment unit inherited from their relatives or provided by their company. In the city center, if a family owns a car, then that car would almost certainly be used for daily commuting. A multinomial logistic model is applied to examine the factors influencing the tendency for using cars. The results show that people’s choices of commuting by alternative modes rather than cars are also shaped by their attitude toward public transportation, but other factors can also subtly change people’s commuting behavior under certain conditions. The commuting distance discourages people from walking and taking buses (but not metro). As the egress distance to the workplace increases, the metro becomes less appealing than cars. Mixed land use encourages people to walk or take buses instead of driving. Older people prefer riding buses and walking to driving, and female respondents tend to prefer walking, cycling, and riding the metro to driving compared to male respondents. These findings contribute to understanding the behavior of people who are familiar with public transportation and how to encourage them to switch from driving cars to alternative transport modes.

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