Spatial Pattern of Functional Urban Land Conversion and Expansion under Rapid Urbanization: A Case Study of Changchun, China

As populations continue to be concentrated in cities, the world will become entirely urbanized, and urban space is undergoing a drastic evolution. Understanding the spatial pattern of conversion and expansion of functional urban land, in the context of rapid urbanization, helps us to grasp the trajectories of urban spatial evolution in greater depth from a theoretical and practical level. Using the ESRI ArcGIS 9.3 software platform, methods, such as overlay analysis, transition matrix, and kernel density estimation, were used in order to analyze the spatiotemporal characteristics of different types of functional urban land conversion and expansion in the central city of Changchun. The results show that different types of functional urban land were often expanded and replaced, and the urban spatial structure was constantly evolving. The conversion and expansion of functional urban land show similar characteristics to concentric zone and sector modes and show dynamic changes in different concentric circles and directions at different periods. Our method can accurately identify the different types of functional urban land, and also explore the evolutionary trajectory of urban spatial structure. This study will help to coordinate the development of different functional urban spaces and to optimize the urban spatial structure in the future.

Did Industrial Centralization Strategy in Shanghai’s Suburbs Lead to Economic Growth?

Industrial centralization is an important policy choice in the industrial economy era. The purpose of this paper is to evaluate the overall performance and the influential effects of the industrial centralization strategy in the suburbs of Shanghai. The results show that (1) the strategy of industrial concentration in the suburbs of Shanghai effectively promoted economic growth; (2) on different spatial scales, there are visible differences in the impact of industrial concentration on the performance of industrial land; (3) industrial concentration has significantly improved industrial energy utilization efficiency; and (4) industrial concentration has narrowed the gap of economic development among the suburbs, but it has not resulted in a corresponding narrowing of the urban-rural gap. The main recommendations are to pay more attention to the high-end and centralization of urban industries in the central city, promote the interactive development of manufacturing and service industries as well as the integrated development of industry and city, moderately control the scale and speed of industrial suburbanization and residential suburbanization, promote the transformation of the traditional industrial land into “industry + R&D + business and office + exhibition” and further narrow the income gap between and within regions.

SPATIAL COMMONING: RE-IMAGINING WELLINGTON’S CENTRAL-CITY LIBRARY & CIVIC SQUARE

<p><b>What if architecture could promulgate its resistance to urban inclinations of segregation, privatisation, and individualisation?</b></p> <p>The neoliberal climate of contemporary cities has reduced architecture to a mere tool for capital accumulation. Architecture, consumed and produced as a form of capital, is facilitating the progression of inequality and environmental degradation, nullifying its humanitarian agenda.</p> <p>In counter-reaction to the capitalistic conditions of the city, and the conviction that architecture can express social cognition, this thesis re-imagines, two essential community containers – Wellington Central Library and Civic Square as an urban common.</p> <p>The primary intent of this thesis is to develop a speculative commons framework that architectonically articulates sharing and commoning practices in the context of Wellington City centre.</p> <p>This research argues the pertinence of commoning theories in contemporary urban cities. It examines the genealogy and characteristics of the urban commons and how it could be spatially constructed.</p> <p>It examines the historical significance of the existing building to inform the tectonic characteristics of the urban commons. It investigates the conceptual and formal devices of Post-Modernism to drive the spatial and representational aspects of the design process.</p> <p>Moreover, it explores the evolving function and the societal role of libraries within the era of digitisation. It identifies an adaptable programmatic framework for the 21st-century library envisioned as a common.</p>

SPATIAL COMMONING: RE-IMAGINING WELLINGTON’S CENTRAL-CITY LIBRARY & CIVIC SQUARE

<p><b>What if architecture could promulgate its resistance to urban inclinations of segregation, privatisation, and individualisation?</b></p> <p>The neoliberal climate of contemporary cities has reduced architecture to a mere tool for capital accumulation. Architecture, consumed and produced as a form of capital, is facilitating the progression of inequality and environmental degradation, nullifying its humanitarian agenda.</p> <p>In counter-reaction to the capitalistic conditions of the city, and the conviction that architecture can express social cognition, this thesis re-imagines, two essential community containers – Wellington Central Library and Civic Square as an urban common.</p> <p>The primary intent of this thesis is to develop a speculative commons framework that architectonically articulates sharing and commoning practices in the context of Wellington City centre.</p> <p>This research argues the pertinence of commoning theories in contemporary urban cities. It examines the genealogy and characteristics of the urban commons and how it could be spatially constructed.</p> <p>It examines the historical significance of the existing building to inform the tectonic characteristics of the urban commons. It investigates the conceptual and formal devices of Post-Modernism to drive the spatial and representational aspects of the design process.</p> <p>Moreover, it explores the evolving function and the societal role of libraries within the era of digitisation. It identifies an adaptable programmatic framework for the 21st-century library envisioned as a common.</p>

Simulation and Optimization Strategy of Storm Flood Safety Pattern Based on SCS-CN Model

The contradiction between rapid urbanization’s demand for land resources and the ecological environment is increasing, which has led to large-scale hardening of the underlying surface of the city and reduction of land for storage. In addition, construction land occupies rainwater confluence land, resulting in a significant decline in urban stormwater control capabilities. The increasingly frequent flood disasters in recent years have exposed the contradiction between urban construction and stormwater safety that cannot be ignored. Therefore, this article takes the central city of Harbin as the research object, uses ArcGIS for spatial analysis and SCS (Soil Conservation Service) hydrological model simulation to construct the rain and flood safety pattern in the research area, and proposes targeted optimization suggestions and strategies based on the evaluation results to achieve the purpose of coordinating the water ecosystem service function with social and economic development. The research shows that protecting the original stormwater corridor and strengthening the connection between the stormwater control patches can effectively guarantee the connectivity of the stormwater corridor, build the natural stormwater regulation and storage system, and then increase the ability of the city to resist the risk of rainstorm, reduce the disaster caused by urban waterlogging, and achieve the goal of sponge city construction.

How Do Population Flows Promote Urban–Rural Integration? Addressing Migrants’ Farmland Arrangement and Social Integration in China’s Urban Agglomeration Regions

China’s urban–rural relationships have been changed dramatically by the intensifying population flows, especially in urban agglomeration regions. This study contributes to the interpretation of urban–rural integration mechanisms in urban agglomeration by constructing a conceptual framework of migration-related resource flows. Taking the Wuhan urban agglomeration as an example, migrants’ farmland arrangement, migration pattern, and social integration have been investigated to uncover the spatial and temporal characteristics of the urban–rural interaction, based on the data from the China Migrants Dynamic Survey in 2012–2017. The findings indicate that the farmland circulation in the Wuhan urban agglomeration was generally low, but slightly higher than that of the national average. The central city, Wuhan, had a high degree of family migration and social integration, indicating stronger resource flows in developed areas. However, its farmland circulation level was lower than that of non-central cities. The unsynchronized interaction of resources in urban and rural areas should be taken seriously, especially in areas with a relatively developed urban economy. The advantages of the central city in absorbing and settling migrants confirmed the positive impact of the urban agglomeration on promoting urban–rural integration.

Spatial–Temporal Features of Coordination Relationship between Regional Urbanization and Rail Transit—A Case Study of Beijing

Urban rail transit is an important transportation infrastructure that mitigates the congestion of the central city and realizes compact city space development. However, the literature on the spatiotemporal coupling of urbanization and rail transit from the urban scale and its influencing factors is still uncommon. Taking Beijing as an example, based on the theory of coupling coordination, we have constructed a comprehensive indicator system for regional urbanization (hereafter RU) (including population, economy, and spatial urbanization) and rail transit (hereafter RT). On this basis, we use the entropy method, coupling coordination degree model, and spatial autocorrelation analysis method to explore the spatiotemporal characteristics of the overall and pairwise coupling coordination between population, economy, spatial urbanization, and rail transit. Finally, we analyze the spatial correlation and standard deviational ellipse analysis of the coupling coordination degree between RU and RT. The results indicate the following: (1) In addition to population urbanization, the other urbanization indicators and the RT level all show a downward–rising–falling trend from 2006 to 2017, among which the level of economic urbanization is the highest. The degree of coupling coordination between RU and RT is unbalanced development and shows a trend of first rising and then falling. (2) The degree of coupling coordination between RU and RT presents an imbalanced distribution in various regions, and the coupling coordination degree in the central urban areas is significantly higher than that in the outer suburbs. (3) From 2006 to 2017, the spatial correlation of the coupling coordination degree between the various systems has a similar changing trend. Moreover, the distribution of the spatial agglomeration points of the coupling coordination degree between RU and the RT is similar, showing a decreasing trend from the central urban area to the surrounding urban area. Therefore, relevant departments can rationally plan the construction of urban rail transit according to the coordination relationship between RU and RT and the spatial aggregation degree to realize the benign and sustainable development between urban especially suburbanization and rail transit.

Air Quality in the Harbin-Changchun Metropolitan Area in Northeast China: Unique Episodes and New Trends

Because of the unique geographical, climate, and anthropogenic emission characteristics, it is meaningful to explore the air pollution in the Harbin-Changchun (HC) metropolitan area. In this study, the Air Quality Index (AQI) and the corresponding major pollutant were investigated for the HC cities, based on the air quality data derived from the China National Environmental Monitoring Center. The number of days with the air quality level of “good” gradually increased during recent years, pointing to an improvement of the air quality in HC. It was also found that ozone, a typical secondary pollutant, exhibited stronger inter-city correlations compared to typical primary pollutants such as carbon monoxide and nitrogen dioxide. In addition, for nearly all the HC cities, the concentrations of fine particulate matter (PM2.5) decreased substantially in 2020 compared to 2015. However, this was not the case for ozone, with the most significant increase of ozone observed for HC’s central city, Harbin. This study highlights the importance of ozone reduction for further improving HC’s air quality, and the importance of agricultural fire control for eliminating heavily-polluted and even off-the-charts PM2.5 episodes.

EPIDEMIOLOGICAL ASPECTS OF ACUTE APPENDICITIS ACCORDING TO THE CENTRAL CITY CLINICAL HOSPITAL OF ALMATY

В статье проанализировано 1759 случаев острого аппендицита по данным историй болезней пациентов, проходивших лечение на базе Центрального городской клинической больницы с 2015 по 2017 гг. Выявлены основные эпидемиолгические аспекты данной патологии. The article analyzes 1759 cases of acute appendicitis according to the case histories of patients treated at the Central City Clinical Hospital from 2015 to 2017. The main epidemiological aspects of this pathology have been identified.