Spatial Change Analysis of Harbin Urban Built-up Area Based on VIIRS Images
Urban built-up area can be used to measure urbanization process. In this paper,based on VIIRS night light remote sensing images,the night light index method and support vector machine classification method were used to extract the built-up area in Har-bin,and the extraction accuracy of the two methods was compared. Urban built-up areas in 2018 and 2022 were extracted respectively by SVM,and the landscape index of Harbin's built-up areas in two years was calculated to understand the spatial changes of Harbin' s built-up areas.In addition to the expansion of the original built-up area from the center to the periphery,the scope of the New Dis-trict built-up area has increased significantly,and the complexity of landscape pattern has increased.It shows that with the develop-ment of Harbin,the degree of coordinated development within the region is improved.
NETL
NSTL
万方数据
