摘要：
Chinese cities have experienced unprecedented growth in the past few decades. In this context, the rapid rise of housing prices in Chinese cities makes the affordability of homeownership one of the biggest challenges related to people's livelihood. As a forming part of public housing, affordable housing in China mainly targets medium and low-income urban residents who cannot afford commodity housing. The spatial site selection and layout of affordable housing, which becomes a challenge for urban planners and policymakers, is potentially related to a spatial differentiation and the spread of poverty. In this study, we propose a conceptual model of spatially subsidized benefits (SSBs) of affordable housing by combining affordable housing prices and ordinary commodity housing prices in the same or adjacent location in the city. Moreover, by integrating the multiple digital elevation models (DEMs) with geographic information systems, we design a prototype for the spatial decision support system of affordable housing, which takes into account the cost of land for government, public transport facilities, residents' spatial demand, and the prevention of spatial differentiation. Using the case of Wuhan (China), we simulate the spatial layout of the SSBs of affordable housing in the city under multiple hypothetical scenarios. Our results show that SSBs display clear hierarchical characteristics under different scenarios. The findings indicate that the quantitative spatial decision method based on SSBs can provide effective technical support for Chinese urban planners or policymakers to realize a scientific layout of affordable housing under different scenarios, avoiding the risk of spatially differentiating low-income residents. Further, it also provides some insights into the innovative application of multiple DEMs in urban planning.
期刊：
Land Use Policy,2021年103:105294 ISSN：0264-8377
作者机构：
[Zheng, Linzi; Tan, Shukui; He, Qingsong] College of Public Administration, Huazhong University of Science and Technology, Wuhan, 430074, China;[Chen, Ke] School of Civil and Hydraulic Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China;[Yin, Chaohui] College of Public Administration, Central China Normal University, Wuhan, 430079, China;[Wu, Jiayu] College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, Zhejiang Province, China
摘要：
The conventional wisdom that compact city fosters quality of place (QoP) has been contested in the literature, leaving the nexus between urban expansion and QoP something of a black-box. This paper investigates the magnitude of additional QoP achievements derived from increasing compactness for 362 Chinese cities. We propose that an expansion consists of a fundamental part (FLE) in consistency with fundamental factors such as demographic, economic and technical changes and a transitory part (TLE) mainly driven by policy shocks, while these two parts would affect QoP heterogeneously. We find that compact FLE has positive effects on QoP, which, however, may be attenuated by TLE. We also discern that positive effects of compactness on QoP are most pronounced in cities located in economically backward areas of the west; and only cities in this region have QoP positively related to compact TLE, indicating that even policy shocks could improve QoP here as long as they are promoting compactness. This research has theoretical contributions and implications for China’s urban polies that a move from sweeping directives on urban expansion to connecting with fundamental changes is more effective in fostering QoP.
期刊：
Land Use Policy,2021年104:105387 ISSN：0264-8377
通讯作者：
Yueqing Xu<&wdkj&>Xinhai Lu
作者机构：
[Lu, Xinhai; Liu, Chao; Han, Jing] Cent China Normal Univ, Coll Publ Adm, Wuhan 430079, Peoples R China.;[Xu, Yueqing] China Agr Univ, Coll Land Sci & Technol, Beijing 100193, Peoples R China.
通讯机构：
[Yueqing Xu; Xinhai Lu] C;College of Land Science and Technology, China Agricultural University, Beijing 100193, China<&wdkj&>College of Public Administration, Central China Normal University, Wuhan 430079, China
关键词：
Land use functions (LUFs);Conflicts;Human-natural factors;Geographic detector model;Zhangjiakou City
摘要：
Climate change, urbanization, and industrialization have caused severe conflicts in land use functions (LUFs) in Chinese ecologically fragile areas. The coordination of LUFs is of great significance to optimize national territory space. This study proposes an index system to assess LUFs and their conflict/coordination relationship at the grid-scale based on multi-source data characterizing land-use, geography and socio-economy. The geographic detector model is used to identify the driving forces associated with LUFs changes. Zhangjiakou City, a typical ecologically fragile area in North China, is selected as an empirical study area. The results show that during 1990–2015, land-use economic, social, and ecological functions greatly enhanced, especially the social function. Additionally, LUFs are spatially heterogeneous and clustered due to the terrain and socio-economic conditions. Among three LUFs, Land-use economic and social functions primarily display coordination. Land-use ecological and economic functions, as well as ecological and social functions, are coordinated in mountainous and hilly areas, while are conflicted in the Yang River valley. The driving mechanisms of multiple LUFs originate from spatially different coupling of natural conditions and anthropic activities, but economic development and social life are primarily responsible for LUFs changes. Policymakers are suggested to optimize ecological–living–production spaces by coordinating LUFs. Thus, this study can help mitigate LUFs conflicts and further improve the harmonization of ecological–living–production spaces.
作者机构：
[Lu, Xinhai; Wu, Yueqi; Cui, Haiying; Ke, Shangan] Cent China Normal Univ, Coll Publ Adm, Wuhan 430079, Peoples R China.;[Lu, Xinhai] Huazhong Univ Sci & Technol, Coll Publ Adm, Wuhan 430074, Peoples R China.;[Ge, Kun] Jiangxi Normal Univ, Coll City Construct, Nanchang 330022, Jiangxi, Peoples R China.;[Ge, Kun] Jiangxi Normal Univ, Inst Real Estate, Nanchang 330022, Jiangxi, Peoples R China.;[Chen, Danling] Huazhong Agr Univ, Sch Publ Adm, Wuhan 430070, Peoples R China.
通讯机构：
[Cui, Haiying] C;[Ge, Kun] J;Cent China Normal Univ, Coll Publ Adm, Wuhan 430079, Peoples R China.;Jiangxi Normal Univ, Coll City Construct, Nanchang 330022, Jiangxi, Peoples R China.;Jiangxi Normal Univ, Inst Real Estate, Nanchang 330022, Jiangxi, Peoples R China.
关键词：
temporal-spatial pattern;the green transition of farmland use;coupling coordination;Hubei Province
摘要：
The green transition of farmland use is a future trend in China’s modern agriculture and green development. However, its research framework, including its evaluation system, temporal-spatial distribution, and driving mechanisms, has not been established in the existent literature. With the 17 cities in Hubei Province as an example, we evaluated the green transition of farmland use and explore the characteristics and driving mechanisms of the temporal and spatial evolution from 2000–2019. The findings were as follows: First, the green transition of farmland use in Hubei Province is in infancy, but it has great potential. Second, the growth rate of the green transition of farmland use has noticeable regional differences in the east, central, and western areas of the province. Third, the three dimensions of spatial transition, functional transition, and model transition in the green transition of farmland use have significant spatial differences in coupling and coordination, and decoupling is becoming increasingly prominent. Based on the research findings, we put forward targeted countermeasures and suggestions.
作者机构：
[Ye, Liping] College of Public Administration, Central China Normal University, Wuhan 430079, China;[Geng, Jiang-Bo] School of Finance, Zhongnan University of Economics and Law, Wuhan 430073, China
通讯机构：
[Jiang-Bo Geng] S;School of Finance, Zhongnan University of Economics and Law, Wuhan 430073, China
摘要：
This paper uses the minimum spanning tree model to investigate the dependency structure and integration degree of the global health sector stock markets. It examines the direction, intensity, time-varying characteristics, and asymmetric effects of return connectedness among these stock markets using the directional connectedness network model. It also explores the hedging and diversification analyses of global health sector stock markets. The empirical results suggest that health sector stock markets of the developing and developed countries show obvious group clustering characteristics, forming a low level of integration between the two groups and a high degree of integration within each group. For the return connectedness network, France, the UK, the US, and Germany are net return transmitters. India, Canada, China, Japan, and South Africa are net return recipients. Meanwhile, return spillovers among health sector stocks in these nine countries have obvious time-varying characteristics. In particular, the 2008 global financial crisis increased the integration level among global health sector stock markets. Moreover, there exists a significant asymmetric effect of return spillover among the global health sector stock markets, and the return spillover intensity in a declining market is significantly higher than it is in favourable market conditions. Finally, diversification evidence shows the optimal hedge ratios and portfolio weights across all nine countries changes over time.
