Research on optimization of ecosystem service function in mudslide disaster area by landscape ecological engineering technology

Abstract

At present, the prevention and control of mudslide disasters are mainly based on geotechnical engineering measures, supplemented by landscape and ecological engineering measures, ignoring the important role of ecological prevention and control engineering in mudslide management. In this paper, the Bailong River Basin is taken as the main research object at the macro scale, supplemented by the municipal districts along the route as the typical mudslide disaster research area at the meso and micro scales. The InVEST model was utilized to evaluate the ecological service functions of each land and pinpoint the sensitive areas that are influencing the evolution of ecological service functions. The quantitative regulation model for landscape ecological integrated planning in the mudslide disaster area was proposed from the perspective of ecological disaster prevention and mitigation through landscape ecological engineering technology. Combined with the successful case of landscape ecological regulation in Region X, it was found that the AWMSI index of the region increased from 56.78 to 79.03 during the regulation period, and the diversity of patches within the landscape was enhanced, which was favorable to species exchange and biodiversity conservation. The mean value of the Habitat Quality Index (HQI) increased from 0.6147 to 0.6579, and the overall level of habitat quality was improved. The annual growth rate of MPI was 0.0002 with a slow growth rate, but the growth rate of MPI increased significantly with the further increase of restoration years. The study's findings can be utilized as a scientific basis for landscape ecological engineering and can also serve as a reference for disaster prevention and ecological restoration in mudflow basins with high activity.