Analysis on Quality Evaluation of Ecological Environment in Medium-sized and Small Towns based on BP Neural Network

Abstract

This paper studies the establishment of the quality evaluation index system for the ecological environment in medium-sized and small towns as well as evaluation methods. It attempts to establish an ecological environment quality evaluation index system suitable for medium-sized and small towns and determine reasonable weights and appropriate evaluation methods to offer reference for the establishment of a national quality evaluation system for the ecological environment in medium-sized and small towns and provide information for the effective management and rational construction of ecological environment. This paper takes Town A as an example. It performs in-depth analysis on the establishment of the ecological environment quality index system and rating of the ecological environment quality for this town, and obtains the spatial distribution pattern of the ecological environment quality. Through research on the grade distribution pattern of single factors that affect the ecological environment quality and the correlation with ecological environment quality grades, we find that the socio-economic factor affects the ecological environment quality the most, followed by the environmental level, and that natural resources plays the smallest role. These conclusions are consistent with the actual situation, which has further proved the practicability and reliability of the index system and evaluation methods obtained in this research.