杭州城西科创大走廊湿地湖链景观水质信息多源遥感监测方法研究OACSTPCD

Hangzhou Western Science and Technology Corridor is a crucial area for the future city development of Hangzhou.It encompasses Qingshan Lake,Xixi Wetland,South Lake,Tiaoxi River,and other water resources that have an increasingly significant impact on production and life in the western part of the city.This study uses Sentinel-2B images along with UAV hyperspectral data and measured ASD spectra to select chemical oxygen demand(CODMn),total nitrogen(TN),total phosphorus(TP),dissolved oxygen(DO),and turbidity(Tur)as indicators for evaluating water quality.The results show that the comprehensive water quality index ranged from 50 to 65 indicating a"medium"grade for water quality.Winter exhibits better water quality than summer while Qingshan Lake and Xixi Wetland have better water quality compared to Nanhu,Hemu Wetland,Tiaoxi River and other water resources.By calculating the colorimetric angle and comprehensive water quality index,the study establishes a prediction model to achieve quantitative monitoring of the study area's water quality.Although the prediction accuracy based on chrominance angle is high,some contingencies exist,and portability needs further improvement.In summary,the overall water quality in Hangzhou Western Science and Technology Corridor is generally good.However,it is still necessary to pay attention to the river system with large water quality changes such as Tiaoxi River.