Efficiency Loss and Intensification Potential of Urban Industrial Land Use in Three Major Urban Agglomerations in China

Abstract

In recent decades, efficiency and intensification have emerged as hot topics within urban industrial land use (UILU) studies in China. However, the measurement and analysis of UILU efficiency and intensification are not accurate and in-depth enough. The study of UILU efficiency loss and intensification potential and their relationship is still lacking, and the application of parametric methods with clearer causal mechanisms is insufficient. This paper argued that the intensification potential of UILU could be defined as the amount of saved land or output growth resulting from reduced efficiency loss of UILU. Accordingly, we constructed quantitative models for measuring and evaluating the intensification potential of UILU, using the stochastic frontier analysis (SFA) method to calculate efficiency loss in three major urban agglomerations (38 cities) in China. Our results revealed a large scale and an expanding trend in the efficiency loss and intensification potential of UILU in three major urban agglomerations in China. From 2003 to 2016, the annual efficiency loss of UILU was 31.56%, the annual land-saving potential was 979.98 km2, and the annual output growth potential was 8775.23 billion Yuan (referring to the constant price for 2003). It is, therefore, imperative to formulate and implement better policies and measures to promote further intensification and to reduce inefficiency, especially in the Yangtze and Pearl River Deltas and prioritizing a few key cities, such as Dongguan, Shenzhen, and Shanghai.

Study on measurement and simulation of noise field between long tunnel and underground interchange

“…Under the dual influence of the new urbanization and information technology, the development trend of urban transportation demand and people's expectations for the future of transportation [1][2][3][4] are undergoing significant changes. Cities have shifted from a phase of high-speed growth to a phase of high-quality development, and the people's expectations for a livable urban life have changed [5][6][7] . According to the information released by the National Bureau of Statistics in January 2022, the permanent urban residents in China are expected to reach 914.25 million by the end of 2022, with an urbanization rate of 64.72% [8,9] .…”