Abstract
Sustainable development is a long-term solution for urban development and a guideline for urban development. Only by better coordination around the population, resources, and environment can the city achieve sustained and steady development. In order to evaluate the efficiency of sustainable urban development under environmental constraints, this paper takes 13 prefecture-level cities in Jiangsu Province as an example. To address the infeasibility problem in the Malmquist-Luenberger (M-L) index, a modified M-L index analysis method based on the new directional distance function (DDF) is adopted. Combined with the consideration of desirable and undesirable outputs, a linear programming model for sustainable urban development evaluation is constructed to provide a scientific decision-making basis for sustainable development of the city. The results show that the growth of sustainable urban development efficiency is not only related to desirable outputs but also affected by undesirable outputs. Technical change is the main driver of most sustainable urban development efficiency growth. However, efficiency changes also affect the sustainable development potential of cities to a certain extent. Through the modified M-L index analysis, we analyze the characteristics of different regions of Jiangsu Province, the changes in efficiency and the impact of technological innovation on sustainable urban development, and give policy recommendations to promote sustainable urban development.
Highlights
Sustainable urban development refers to the long-term, stable and sustained economic growth and structural optimization of the city within a certain time and space, realizing urbanization and urban modernization
Combined with the above analysis, we found that there is a certain gap in the efficiency of sustainable economic development in Jiangsu Province
Taking 13 prefecture-level cities in Jiangsu Province as an example, a modified M-L indexes analysis method based on the new directional distance function (DDF) is used to guarantee non-negative reference targets for all desirable and undesirable metrics
Summary
Sustainable urban development refers to the long-term, stable and sustained economic growth and structural optimization of the city within a certain time and space, realizing urbanization and urban modernization. While meeting the needs of the current urban population for survival and development, we must consider the needs of future urban population survival and development, maintain the corresponding potential reserves, and enable the city to maintain a balanced development [1,2,3,4]. Sustainable urban development includes sustainable development of population, economy, resources, environment, and society. It depends on the supporting conditions such as resources and environment, and on the quality of urban human resources, the speed of economic growth, and the advantages and disadvantages of economic benefits. If we can comprehensively consider indicators such as population, economy, resources, environment, and society, we can call it sustainable economic development [5,6,7,8,9]
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