STUDY ON MANGROVE PATTERN AND ITS EVOLUTION IN COASTAL WETLAND ECOLOGICAL ENVIRONMENT BASED ON REMOTE SENSING IMAGE RECOGNITION

The study of the pattern and evolution of mangroves in the coastal wetland ecological environment can provide scientific basis for the protection and restoration of mangroves. In this paper, the remote sensing image recognition method is used to study the distribution pattern of mangroves in coastal wetland ecological environment. The spectral features, texture features and shape features of remote sensing images of mangroves are extracted. Then, the extracted remote sensing image is analyzed by fuzzy dual support vector machine, and the spatial distribution pattern of mangrove forest is obtained. By analyzing the landscape index in the spatial pattern and its variability in the spatial direction, the evolution result of the spatial pattern of mangroves is finally obtained. Experiments have proved that this method can accurately classify remote sensing images and obtain the spatial pattern distribution of mangroves. The study also found that the degree of fragmentation of mangroves is relatively high. As the number of small patches increases, the ductility and connectivity of the patches decrease.