Abstract
Rapid industrialization and urbanization in China have led to a rapid increase in the number of brownfields, however there is a lack of identification of the spatial extent of brownfields in cities and accurate assessment of brownfield redevelopment. Based on the relationship between brownfields and urban complex ecosystems, this paper defines brownfields in China and constructs a comprehensive evaluation index system including socio-economic and ecological subsystems. Using Wuhu City as empirical evidence, 19 brownfields were identified using remote sensing data and field surveys. Based on the detection of soil contaminants in brownfields, a fuzzy integrated evaluation method was used to suggest their redevelopment direction. It is found that the government’s planned land use types and the brownfield redevelopment evaluation results match to a large extent, but social, economic and ecological environmental factors should be more fully considered. At the same time, the identification and redevelopment of brownfield sites in the city as a whole need to be carried out by the government’s professional forces in order to obtain more effective and scientific conclusions.
Highlights
Along with industrialization and urbanization and the dramatic restructuring of industries, a large amount of contaminated, unused or abandoned land has been left behind, known as brownfield land, a term that first appeared in the ComprehensiveEnvironmental Response, Compensation and Liability Act passed by the US Congress in [1]
We argue that the overall decisions on brownfield conversion by higher levels of government, urban master plans and land use plans can be summarized as the influence of policy factors, reflecting the influence of public power on the development of the site; the influence of the value of the site, investment benefits and returns mainly involves eco-nomic factors that are of primary concern to developers; the will of the people is a social factor that influences the choice of development direction for brownfield sites; the state of environmental pollution affects the transformation of brownfield sites afterwards
This study uses a comparative analysis of planning texts for initial screening, which allows for a complete selection of land that has changed, and a site survey to improve the understanding of the history of potential contamination of brownfield sites and the existing landscape on the one hand, and soil sampling and monitoring to avoid the lag of textual information on the other, which is a combination of qualitative analysis and quantitative monitoring that can be applied to the screening and identification of urban brownfield sites
Summary
Along with industrialization and urbanization and the dramatic restructuring of industries, a large amount of contaminated, unused or abandoned land has been left behind, known as brownfield land, a term that first appeared in the ComprehensiveEnvironmental Response, Compensation and Liability Act passed by the US Congress in [1]. Along with industrialization and urbanization and the dramatic restructuring of industries, a large amount of contaminated, unused or abandoned land has been left behind, known as brownfield land, a term that first appeared in the Comprehensive. Brownfield redevelopment is an important strategy for cities to achieve sustainable development which includes land resources. The brownfield redevelopment process consists of re-mediating a given site by treating, removing or isolating the pollutants and subsequently developing the location for useful purposes [2]. Chen et al used a combination of targeted identification and quantitative contamination measurements to identify brownfield sites [4]. In response to the characteristic of brownfields being in an abandoned state, some researchers have developed brownfield identification systems using existing official or unofficial data, such as tax and industrial inventories, Some researchers have established brownfield identification systems through existing official or unofficial.
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