System Construction And Empirical Study On Ecological Evaluation System Of Healthy Urbanization

Abstract:Healthy urbanization is a new conception of urbanization, which is theoretical extension of traditional urbanization. A case study of Pan Chang-zhu-tan Urban Agglomeration is utilized to explore existing problems of its healthy urbanization. Based on the research of supporting theories concerning healthy urbanization and its ecological evaluation system, the ecological evaluation index system of healthy urbanization is constructed by using both Driver-Pressure-State-Impact-Response (DPSIR) model and Carrying capacity-Supporting capability-Attractive capability-Evolutional capability-Developing capability (CSAED) model, to conduct the healthy urbanization assessment based on principal component analysis, which contributes to guaranteeing astute decision-making of strategy implementation for healthy regulation, development priorities, and supporting system of healthy urbanization in the urban agglomeration region. The main conclusions of the thesis are as follows.(1) The existing problems of urbanization in Pan Chang-zhu-tan Urban Agglomeration are deeply analyzed from the four perspective, including population urbanization, space urbanization, economic urbanization, and social urbanization. The results showed that there are some problems to restrict the urbanization, such as imperfect regional city system, population urbanization lagging behind industrialization, as well as mismatched economic and employment structure. Meanwhile, unhealthy phenomena are found based on the analysis of urbanization mode, urban-rural sharing for urbanization achievements, and efficiency as well as equity during urbanization process, which refer to severe waste of land resources, excessive energy consumption, ecological deterioration, widening gap between urban and rural areas, and imbalance of public services.(2) The ecological evaluation system of healthy urbanization is constructed based on DPSIR model and CSAED model, which contains economic high-efficiency and moderate development, harmony and progress of social livelihood, as well as comprehensive promotion of human quality. The influencing factors of healthy urbanization are identified in five major pillars, including potential driving forces, development pressures, control state, social and environmental impact, and multi-responses. Based on main problems of healthy urbanization in the study area, urbanization development targets and regulation indices from governmental plan, the ecological evaluation index system of healthy urbanization in Pan Chang-zhu-tan Urban Agglomeration is built from the five perspectives of potential drivers, development pressures, control state, social and environmental impact, and multi-responses.(3) The healthy situation of urbanization based on ecological evaluation index system in Pan Chang-zhu-tan Urban Agglomeration is discussed by using principal component analysis. The results showed that the development level of potential drivers in Changsha and Xiangtan is comparatively high, while potential drivers in Yiyang are still in a relatively low level. The performance of control state, and social as well as environmental impact in Changsha and Hengyang is emphasized in a balanced way, the development pressure factor has the highest score in the two cities. The development level of control state in Yueyang and Yiyang is still in a relatively low. The effective improvement of eco-environment is limited, suggesting that it is appropriate and necessary to expand urban ecological and environmental capacity; development level of high efficient and equal growth of economy, as well as population quality is relatively low, signifying that optimizing industrial structure and employment environment can tackle the challenges properly; promotional ability of social livelihood as well as policy and systems is insufficient, indicating that promoting public services and citizens'welfare are the key solutions to guarantee healthy urbanization efficiently.(4) According to main problems of healthy urbanization and the identified development priorities of policy responses for healthy urbanization in Pan Chang-zhu-tan Urban Agglomeration, the five policy targets of healthy urbanization in the urban agglomeration region lie in two-oriented development, high-efficient and moderate form, urban-rural interaction, pluralism and fusion, as well as inclusiveness. To understand the core connotation of five policy targets of healthy urbanization and implement healthy planning regulation, it is appropriate and crucial to stick to two-oriented guidance, achieve sharing mechanism, sustain livelihood harmony, maintain mutual promotion, and realize democratic sharing.Based on the above requirements from healthy planning regulation system, the development priorities of healthy urbanization in Pan Chang-zhu-tan Urban Agglomeration consist of five pillars:(i) harmonious development among economy, society, and environment;(ii) simultaneous development among the large, medium, small cities and towns;(iii) regional coordinated development;(iv) harmonious urban-rural development accompanied by new countryside construction; and (v) healthy and orderly combining mode of market principle and government control.According to development priorities of healthy urbanization, it's very vital to strengthen three supporting systems of strategy implementation in Pan Chang-zhu-tan Urban Agglomeration, including economic sustainability, spatial health, and social space justice. The number of figure, table, and references in the paper is21,51, and238, respectively.