西北工程技术学报2026，Vol.25Issue(2)：145-152,8.DOI:10.26974/j.cnki.XBGC.2026.02.006
黄河吴忠段水体叶绿素a与悬浮物质量浓度的光谱反演模型
Spectral Inversion Model of Chlorophyll-a and Suspended Solids Concentration in the Wuzhong Section of the Yellow River
摘要
Abstract
In response to the complex optical characteristics of water bodies in the Wuzhong section of the Yellow River and the poor adaptability of existing models,30 sets of water samples and synchronous spectral data were collected.The original spectra were subjected to natural logarithm transformation and first-order differential transformation to enhance spectral features.The optimal sensitive band combinations were then selected using the normalized difference spectral index(NDSI)and band ratio indices to construct a multiple linear regression inversion model for chlorophyll-a(Chl-a)and total suspended solids(TSS)concentrations.The results demonstrate that the inversion model combining first-order differential transformation and NDSI yields the best performance,achieving R2 values of 0.98 and 0.92 for Chl-a and TSS,respectively,significantly outperforming traditional methods.This approach effectively improves the utilization of hyperspectral information and provides a reference for high-precision,localized remote sensing monitoring of water quality in the Wuzhong section of the Yellow River.关键词
高光谱/叶绿素a/悬浮物/黄河吴忠段/一阶微分/归一化差值光谱指数(NDSI)Key words
hyperspectral/chlorophyll-a/suspended solids/Wuzhong Section of the Yellow River/first-order differen-tial/normalized difference spectral index(NDSI)分类
资源环境引用本文复制引用
韩芬,杨娅婷,马严,雪彦虎..黄河吴忠段水体叶绿素a与悬浮物质量浓度的光谱反演模型[J].西北工程技术学报,2026,25(2):145-152,8.基金项目
宁夏重点研发计划项目(2021BEG03004 （）
2023AAC03787) （）
