Research on Vegetation Change in Su-Hua Expressway based on GF-1 Remote Sensing Data
Based on GF-1 remote sensing satellite images,spectral sharpening method is used for image fusion,and gray histogram is used for image mosaic.Habitat quality index and vegetation coverage index are selected as indicators of habitat quality changes,and land cover and vegetation NDVI data of Suniteyouqi-Huade Expressway(Su-Hua Expressway)from 2018 to 2020 are quantitatively studied.The results show that:(1)GS transform fusion method and gray histogram method are better for image data processing;(2)Among the 12 important construction sites of Su-Hua Expressway from 2018 to 2020,the obvious change of land use type mainly occurred in 2019,and the habitat quality index of 7 construction sites decreased.The area of construction is expanded on the basis of the original construction land.The habitat index of the construction site with large proportion of grassland can reach 95.64,and that of abandoned sites with large proportion of arable land can be as low as 43.62.
NETL
NSTL
万方数据
