Evaluation of Biodiversity Conservation Function of Ruoergai Wetland Ecological Protection Red Line Based on Satellite Data

Abstract

The ecological protection red line includes areas with extremely important ecological functions such as biodiversity conservation and areas with extremely fragile ecology. The delineation of biodiversity protection and ecological protection red lines has a high degree of strategic fit, goal synergy and spatial consistency. Based on multi-source satellite data, this paper uses 3S technology as a means to construct a remote sensing biodiversity conservation function index, and conduct remote sensing monitoring and evaluation of the biodiversity conservation function of the ecological protection red line of Ruoergai wetland from 2000 to 2019. The protection of ecological protection red lines plays an important guiding role. The results show that: in terms of time, the area of the region with poor and poor biodiversity conservation function levels continues to shrink, and the area of the region above good continues to increase., the 20-year average biodiversity conservation function index evaluation grades accounted for 0.4% excellent, 18.2% good, 77.2% general, 3.9% poor, and 0.3% worst, mainly general and good, accounting for 95.4%, the grades of poor and worst are mainly distributed in the southeastern and northern parts of the red line area. In the past 20 years, the functional quality of biodiversity in the red line area of the Ruoergai Wetland has been maintained in a relatively good state, and the improvement in the northwest is more obvious than that in the southeast.