关键词: 长三角生态绿色一体化发展示范区, 机载高光谱, 水质参数, 定量反演

Abstract: This article inverts the water quality parameters of the key water bodies called “one river and three lakes” in the demonstration zone of integrated development of the Yangtze River delta using airborne hyperspectral imagery. The experiment collected the full-spectrum hyperspectral image data in the demonstration area, and obtained the water-leaving reflectance of the water bodies after image preprocessing. The water samples and water spectra are collected synchronously at the flight time. By using the competitive adaptive reweighted feature selection method, the optimal bands are selected for establishing the inversion model, and the water quality thematic mapping is also completed. The coefficient determination R² of the validation set is more than 0.6, and the data error with the water quality monitoring station is less than 10%. This study achieves precise monitoring of water quality parameters in the demonstration area, confirms the application value of airborne hyperspectral remote sensing in the inversion of water quality parameters. The results could enable high quality for the development of the demonstration area.

Key words: demonstration zone of green and integrated ecological development of the Yangtze River delta, airborne hyperspectral, water quality parameters, quantitative inversion