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; Wang, Hongzheng; Tang, Yifeng; Zhang, Xupeng] Huazhong Univ Sci & Technol, Coll Publ Adm, Wuhan 430074, Peoples R China.;[Lu, Xinhai] Cent China Normal Univ, Coll Publ Adm, Wuhan 430079, Peoples R China.;[Yi, Jialin] Nanjing Agr Univ, Coll Land Management, Nanjing 210095, Peoples R China.;[Zheng, Weibo] Colorado State Univ, Dept Human Dimens Nat Resources, Ft Collins, CO 80523 USA.
通讯机构：
[Xinhai Lu; Xupeng Zhang] C;College of Public Administration, Huazhong University of Science and Technology, Wuhan 430074, China<&wdkj&>College of Public Administration, Central China Normal University, Wuhan 430079, China<&wdkj&>College of Public Administration, Huazhong University of Science and Technology, Wuhan 430074, China
关键词：
Farmland use transition;Grain production;Topographical constraints;Spatial spillover effect;Hubei province
关键词：
cultivated land protection policies;farmers’ social networks;SEIRS model;numerical simulation;China
摘要：
Cultivated land protection is the top priority of the national economy in China and the livelihood of people. Cultivated land protection policies (CLPP) play an important role in the protection of cultivated land. However, the process of dissemination of CLPP on social networks of farmers has problems, such as distortion of policy content, single dissemination channels, low level of farmers’ knowledge, and low dissemination efficiency. For revealing the characteristics of the dissemination of CLPP in the farmers’ social networks (FSN), this study combines the Suspected–Exposed–Infected–Recovered–Suspected (SEIRS) epidemic model to construct a model of CLPP dissemination suitable for FSN. In addition, a numerical simulation of the dissemination process of CLPP is conducted on the FSN, and the influence of the structural characteristics of the FSN and different model parameters on the dissemination of CLPP is analyzed. Results show that (1) the dissemination rate between farmers in FSN has a significant impact on the scale and speed of CLPP. A greater initial dissemination rate corresponds to faster speed and larger scale of CLPP dissemination. (2) A greater node degree in FSN means stronger dissemination ability for CLPP. Therefore, identifying structural holes (opinion leaders) in FSN can effectively promote the dissemination of CLPP. (3) The SEIRS model can dynamically describe the evolution law of CLPP dissemination process over time through the four states of farmer nodes of suspected, exposed, infected, and recovered. Numerical simulation results show that the immune degradation rate is proportional to CLPP. However, the direct immunization rate is inversely proportional. The increase in immune degradation rate can reduce the number of recovered farmers and improve the efficiency of CLPP dissemination. On the basis of the abovementioned conclusions, this study draws policy recommendations to increase the scale and speed of CLPP dissemination in China.
期刊：
Growth and Change,2021年52(1):265-282 ISSN：0017-4815
通讯作者：
Chen, Danling;Ge, Kun
作者机构：
[Zhang, Xupeng] Huazhong Univ Sci & Technol, Dept Land Management, Coll Publ Adm, Wuhan, Peoples R China.;[Lu, Xinhai; Kuang, Bing] Cent China Normal Univ, Dept Land Management, Coll Publ Adm, Wuhan, Peoples R China.;[Chen, Danling; Zhang, Chaozheng] Huazhong Agr Univ, Dept Land Management, Coll Publ Adm, Wuhan, Peoples R China.;[Chen, Danling] Huazhong Agr Univ, Inst Ecol & Environm Econ, Wuhan, Peoples R China.;[Ge, Kun] Jiangxi Normal Univ, Coll City Construct, Nanchang, Jiangxi, Peoples R China.
通讯机构：
[Chen, Danling] H;[Ge, Kun] J;Huazhong Agr Univ, Dept Land Management, Coll Publ Adm, Wuhan, Peoples R China.;Jiangxi Normal Univ, Coll City Construct, Nanchang, Jiangxi, Peoples R China.
摘要：
Severe land shortage causes a higher demand for domestic and foreign land-intensive products. As a result, resource utilization, and related environmental issues, will increase in urban areas. To this respect, the analysis of the impact of environmental regulation on urban land use efficiency helps to identify potential points for interventions designed to ensure sustainable land use. This study first introduces a theoretical framework to investigate the micro-transmission mechanism of environmental regulation on urban land use efficiency. Our profit decision-making model concludes that the impact of environmental regulation on urban land use efficiency is influenced by changes in the industrial structure. Empirically, our preliminary analysis suggests that in addition to population density, both formal and informal environmental regulation can promote urban land use efficiency, with a significant spatial heterogeneity across the sample regions. Further, this study shows a remarkable double-threshold relationship between formal environmental regulation and urban land use efficiency in China. We clarify and confirm that environmental regulation promoted urban land use efficiency only when regulation intensity was higher than 0.8612. Environmental regulation increased urban land use efficiency in high-level industrial rationalization areas, whereas it had the opposite effect in low-level ones. Furthermore, there was a clear marginal diminishing effect of the impact of environmental regulation on urban land use efficiency when the optimization of the industrial structure was set as a threshold variable.
通讯机构：
[Lu, Xinhai] C;Cent China Normal Univ, Coll Publ Adm, Room 9040,152 Luoyu Rd, Wuhan 430079, Hubei, Peoples R China.
关键词：
Policy evaluation;Cultivated land protection;PMC-Index model;China
摘要：
The evaluation of cultivated land protection policies (CLPP) is the main basis for reducing the deviation of policy implementation and ensuring the sustainable and efficient operation of cultivated land protection. This paper used the PMC-Index model to establish an evaluation system for CLPP, and then quantitatively evaluated 8 CLPP in China since 2004 based on the PMC-Index and PMC-Surface. It was found that the PMC-Index of the selected 8 CLPP have shown an overall upward trend, with the score increased from 4.70 to 6.85. The average value of PMC-Index of the 8 policies was 5.74. 4 policies had a PMC-Index rating of good consistency, and 4 policies were acceptable consistency. This paper further compared and analyzed the differences between policies ranked the first (P8) and the last (P1). The results showed that the existing CLPP had much room for improvement in terms of the structure of policy tools, coordination of policy release agency, and the completeness of policy content. This study is good for fully understanding the strengths and weaknesses of the single policy for China’s cultivated land protection.
作者机构：
[Lu, Xinhai; Chen, Danling] Huazhong Univ Sci & Technol, Dept Land Management, Coll Publ Adm, Wuhan 430074, Peoples R China.;[Lu, Xinhai] Cent China Normal Univ, Dept Land Management, Coll Publ Adm, Wuhan 430079, Peoples R China.;[Wang, Yue] Zhongnan Univ Econ & Law, Dept Land Management, Coll Publ Adm, Wuhan 430073, Peoples R China.
通讯机构：
[Chen, Danling] H;[Wang, Yue] Z;Huazhong Univ Sci & Technol, Dept Land Management, Coll Publ Adm, Wuhan 430074, Peoples R China.;Zhongnan Univ Econ & Law, Dept Land Management, Coll Publ Adm, Wuhan 430073, Peoples R China.
关键词：
urban sprawl;quality of economic growth;decoupling;spatial correlation;sustainable development
摘要：
This paper investigates how urban sprawl and the quality of economic growth interact and further studies the spatial-temporal decoupling characteristics of both. To achieve this, a framework was developed to better explain both the different dimensional effects urban sprawl exerts on the quality of economic growth and their reverse feedback relation. A sample of 285 Chinese cities (2003 to 2016) were analyzed, employing both a decoupling model and spatial correlation analysis. The findings indicated that urban sprawl and the quality of economic growth are related via scale, structure, technological efficiency, and technological progress effects. In practice, with increasing quality of economic growth, the urban sprawl index decreases at the national level. At prefecture-city level, the types of decoupling between urban sprawl and the quality of economic growth showed clear periodical and unbalanced characteristics. Furthermore, decoupling showed a significant agglomeration effect in Chinese cities, which is mainly mediated by the types High-High and Low-Low. This study provides a significant contribution to the relevant acknowledge system by providing a comprehensive theoretical framework toward an understanding of how urban expansion interacts with the quality of economic growth. Furthermore, their decoupling types and spatial differences that are critical for the urban sustainable development have been identified, thus providing several important insights for both academics and urban policy makers.
