Study on Remote Sensing Monitoring of Urban Black and Smelly Water Body in Deyang City Based on GF-2 Image
The ground monitoring coverage of urban black and odorous water bodies is limited,it is greatly affected by human factors,and the monitoring results have limitations.Taking the main black and odorous water bodies in the urban built area of Deyang city as the research object,and four high-quality GF-2 remote sensing images from 2017 to 2022 were used,the remote sensing monitoring of GF-2 remote sensing images was conducted after radiation correction,image fusion,radiation calibration,image cutting and geometric correction through ENVI 5.3.The spectral characteristics of black and odorous water body and general water body are analyzed and the reflectance of black and odorous water body and general water body in different bands.Based on this characteristic,the slope ratio of different bands is taken as the remote sensing identification index.Water cleaning index model was used to identify black and odorous water bodies and water bodies with black odor risk.The WCI based on the spectral characteristics of Deyang black and odorous water body in this paper only verifies Dingjiayan in Deyang city,and needs to expand the scope to test its applicability.
black and odorous waterremote sensing monitoringGF-2water cleanliness indexWCI
NETL
NSTL
万方数据
