Evaluation and planning of urban geological and ecological environment quality

Abstract

In order to achieve the goal of mutual coordination between the urban construction and sustainable development of geological and ecological environment, the evaluation method and planning strategy for urban geological and ecological environment quality are proposed. In this study, taking the urban planning of Wansheng Economic Development Zone in Chongqing as an example, the status of geological and ecological environment quality from 2007 to 2019 is analyzed. Twenty evaluation indicators from the five aspects of land, hydrologic, resource, ecologic, and geological environment are selected to construct an evaluation system of urban geological and ecological environment quality. The evaluation indicator system of urban geological and ecological environment quality is established, the weights are determined with the analytic hierarchy process (AHP), and the grading standard of evaluation indicator is given. The urban geological and ecological environment quality is assessed in the way of fuzzy comprehensive evaluation, and the countermeasures for urban and rural planning are proposed. The results show that this system can improve the quality of geological and ecological environment in Wansheng Economic Development Zone in Chongqing; the geological and ecological environment quality of the eco-industrial functional zone 2 (F6) and the eco-industrial functional zone 3 (F7) has been maintained well, while the environment quality of other functional zones has shown a significant downward trend. Finally, the planning suggestions are adapting to the urban geological and ecological environment from three aspects of geological, ecological, and artificial environment. The research in this study provides a good guideline for the overall planning development of the city and rapid assessment of the ecological environment quality.