scholarly journals Spatiotemporal Pattern and Driving Factors of Urban Sprawl in China

Land ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 1275
Author(s):  
Xin Zhang ◽  
Jinghu Pan
Keyword(s):  
Urban Sprawl ◽  
Northwest China ◽  
Driving Factors ◽  
Spatiotemporal Pattern ◽  
Evolutionary Trend ◽  
Factors Affecting ◽  
Spatial Cohesion ◽  
Global Concern ◽  
Regional Product ◽  
Derived Data

Urban sprawl is a complex phenomenon related to abnormal urbanization, and it has become a key issue of global concern. This study aimed to measure urban sprawl in China and explore its spatiotemporal patterns and driving factors. Based on 343 Chinese cities at the prefecture level and above, remote sensing-derived data from 2000 to 2017 were used to calculate the urban sprawl index (USI). The evolutionary trend and spatiotemporal pattern of urban sprawl in China were then analyzed using trend analysis and exploratory spatiotemporal data analysis, and Geodetector was applied to investigate the factors driving the changes. The results show the following. ① Moderate or high urban sprawl development occurred in China from 2000 to 2017. In terms of spatial distribution, the USI was high in northwest China and low in southeast China. ② The local spatial stability of the USI gradually decreased from southeast to northwest and northeast. USI had strong spatial dependence. No significant spatiotemporal transitions in urban sprawl were observed, and the spatial pattern was stable with strong spatial cohesion. ③ The gross regional product (GRP) of the tertiary industry, the total GRP, and investment in real estate development have been the most important factors affecting sprawl in cities at the prefecture level and above in China.

Driving Factors of Urban Sprawl in the Romanian Plain. Regional and Temporal Modelling Using Logistic Regression

2021 ◽  
pp. 1-25
Author(s):  
Ines Grigorescu ◽  
Gheorghe Kucsicsa ◽  
Bianca Mitrică ◽  
Irena Mocanu ◽  
Monica Dumitrașcu
Keyword(s):  
Logistic Regression ◽  
Urban Sprawl ◽  
Driving Factors ◽  
Temporal Modelling

Sustainability Factors Affecting the Implementation of Design for Dis-assembly and Re-manufacturing Principles in Automobile Sector Using ISM

2022 ◽  
Vol 13 (1) ◽  
pp. 0-0
Keyword(s):  
Life Span ◽  
Driving Factors ◽  
Structural Modelling ◽  
Factors Affecting ◽  
Interpretive Structural Modelling ◽  
Modelling Analysis ◽  
The World ◽  
Useful Life ◽  
To Come ◽  
Law Making

With the automobile sector pacing the tracks among their competitors to lead the market and adopting eco-friendly technologies, a much economic and vital field of making use of the manufactured product beyond its useful life span is widely neglected. This paper throws light on the necessity for implementing and highlights the various reasons for which these guidelines have not come to the attention of the responsible organizations including law making agencies, automobile manufacturers and as well the consumers. An interpretive structural modelling analysis is made to point out ten driving factors in consultation with various experts from the relevant fields and the results provide guidance to how far the idea of design for dis-assembly and re-manufacturing has sought the world for the sustainability of the automobile manufacturers in the industry, for the days to come.

scholarly journals Quantifying Urban Sprawl and Its Driving Forces in China

2019 ◽  
Vol 2019 ◽  
pp. 1-14
Author(s):  
Jintao Wang ◽  
Shiyou Qu ◽  
Ke Peng ◽  
Yanchao Feng
Keyword(s):  
Urban Sprawl ◽  
Urban Population ◽  
Driving Forces ◽  
Urban Land ◽  
Driving Mechanism ◽  
Eastern Region ◽  
Land Supply ◽  
Construction Land ◽  
Urban Construction ◽  
Derived Data

Against the background that urbanization has proceeded quickly in China over the last two decades, a limited number of empirical researches have been performed for analyzing the measurement and driving forces of urban sprawl at the national and regional level. The article aims at using remote sensing derived data and administrative data (for statistical purposes) to investigate the development status of urban sprawl together with its driving forces. Compared with existing studies, NPP/VIIRS data and LandScan data were used here to examine urban sprawl from two different perspectives: urban population sprawl and urban land sprawl. Furthermore, we used population density as a counter-indicator of urban sprawl, and the regression results also prove the superiority of the urban sprawl designed by us. The main results show that the intensity of urban population sprawl and urban land sprawl has been enhanced. However, the upside-down between the inflow of migrants and the supply of urban construction land among different regions aggravates the intensity of urban sprawl. According to the regression analyses, the driving mechanism of urban sprawl in the eastern region relying on land finance and financial development has lost momentum for the limitation of urban construction land supply. The continuous outflow of population and loosely land supply have accelerated the intensity of urban land sprawl in the central and western regions. The findings of the article may help people to realize that urban sprawl has become a staggering reality among Chinese cities; thereby urban planners as well as policymakers should make some actions to hinder the urban sprawl.

scholarly journals Urban Watercourses in Peril: Implications of Phthalic Acid Esters on Aquatic Ecosystems Caused by Urban Sprawl

Water ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 519 ◽  
Author(s):  
Mahesh Jayaweera ◽  
Gimhani Danushika ◽  
Nilanthi Bandara ◽  
Janith Dissanayake ◽  
Buddhika Gunawardana ◽  
...  
Keyword(s):  
Sri Lanka ◽  
Urban Sprawl ◽  
Phthalic Acid ◽  
Phthalic Acid Esters ◽  
Aquatic Life ◽  
Factors Affecting ◽  
Household Products ◽  
Butyl Phthalate ◽  
Acid Esters

Urban sprawl worldwide warrants the use of large quantities of industrial and household products containing phthalic acid esters (PAEs) resulting in adverse impacts on the quality of aquatic life in urban watercourses. The presence of six PAEs (dimethyl phthalate (DMP), diethyl phthalate (DEP), di(n-butyl) phthalate (DBP), benzyl butyl phthalate (BBP), bis(2-ethylhexyl) phthalate (DEHP), and di(n-octyl) phthalate (DnOP)) in 22 shallow urban watercourses in Colombo and suburbs of Sri Lanka was investigated. The average concentrations of DEP, DBP, BBP, and DEHP in all watercourses varied between 2.5–265.0, 1.0–32.0, 61–108, and 12–165 µg/L, respectively. DMP and DnOP were below the limits of quantification (DMP-0.5 µg/L, DnOP-1.0 µg/L) for all watercourses. DEHP was the most abundant PAE in many watercourses. The significant factors affecting the ubiquitous presence of PAEs in watercourses are the inherent properties of each PAE, presence of industrial and household products with great potential for the migration of PAEs in the sub-catchments, and quality of the receiving water. The contamination levels of PAEs in most of the watercourses are alarmingly high, as evidenced by higher concentrations of DEHP and DBP than those of Canadian permissible levels for the protection of aquatic life (16 and 19 µg/L). This study was the first effort in Sri Lanka to investigate the presence of PAEs in urban watercourses.

scholarly journals Differentiation of Rural Development Driven by Natural Environment and Urbanization: A Case Study of Kashgar Region, Northwest China

2019 ◽  
Vol 11 (23) ◽  
pp. 6859 ◽  
Author(s):  
Jinping Lin ◽  
Jun Lei ◽  
Zhen Yang ◽  
Jiangang Li
Keyword(s):  
Rural Development ◽  
Rural Areas ◽  
Northwest China ◽  
Indicator System ◽  
Economic Transformation ◽  
Rural Landscape ◽  
Human Society ◽  
Analysis Method ◽  
Factors Affecting ◽  
Different Types

With the socio-economic transformation, the recombination of regional development factors and the followed reconstruction of the rural development elements system have profoundly changed the rural landscape of the Kashgar region in Northwest China. The factors affecting the rural production and lifestyle interact with each other, shaping different types of rural development. Accordingly, basing on the main factors influencing the rural development ability and long-term development potential, the assessment indicator system of rural comprehensive development (RCD) was established to reveal the differentiation of rural development and identify the dominant factors affecting rural development. The principal component analysis method and the cluster analysis method was used to distinguish the different types. The results show that the high-level rural development areas are mainly concentrated in the center of the region, while the low-level areas are mainly distributed in the periphery, with significant spatial differentiation characteristics. We divided the rural development into three categories and 11 zones for which the basic natural conditions and external challenges are different. The categories reflect three possible results of rural development: grow, decline, and vanish, which is in the industrialization development stage. With the transformation of human society and the change of urban–rural relationship in its mode and content, the external economy, society, and changing environment has put pressures on rural areas. Therefore, according to different rural development types, it is necessary to take measures to strengthen the rural areas to cope with external environmental challenges.

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