Ecological Sensitivity Analysis of Maoming City based on GIS and Analytic Hierarchy Process (AHP)

Abstract

Urban ecological environment is the material basis for the survival and development of residents, and ecological sensitivity research is of great significance for understanding and protecting the ecosystem, promoting sustainable development, preventing and controlling environmental problems. With the progress of science and technology and the increasingly prominent environmental problems, the importance of ecological sensitivity research is increasing, and it has become one of the hot spots in environmental science research. In this paper, geographic information system (GIS) and analytic Hierarchy Process (AHP) are used to evaluate the ecological sensitivity of Maoming City. Firstly, the spatial database of ecological sensitivity assessment is constructed by integrating 9 factors such as elevation and slope with GIS technology. Secondly, AHP method was used to determine the weight of each ecological sensitivity factor, including elevation, slope, slope direction, land use type, vegetation coverage and water environment. Finally, combined with the above data and weights, the ecological sensitivity of Maoming City was quantitatively evaluated, and divided into four sensitive areas: insensitive, low sensitive, medium sensitive and high sensitive, and the spatial distribution map of ecological sensitivity was drawn. The results showed that the comprehensive ecological sensitivity of Maoming city was high, mainly characterized by insensitivity and low sensitivity, which accounted for 69.31%.