长江科学院院报2019，Vol.36Issue(1)：21-28,8.DOI:10.11988/ckyyb.20170701
基于GF-1/WFV的钱塘江叶绿素a和总悬浮物浓度遥感估算
Remote Sensing Estimation of Chlorophyll-a and Total Suspended Matter Concentration in Qiantang River Based on GF-1/WFV Data
摘要
Abstract
In an attempt to explore the effect of Gaofen-1 (GF-1) satellite on remote sensing inversion of river water quality, the remote sensing estimation models of Chlorophyll-a and total suspended matter concentration were con-structed to estimate the water quality in Hangzhou segment of Qiantang River by simulating the WFV bands by in situ spectral reflectance based on the GF-1/WFV data with 16 m resolution and the ground measured data. Results prove that the quadratic polynomial model based on the reflectance difference of B1 and B3 band (B1-B3) can be used to estimate the Chlorophyll-a concentration with R2=0.83 and RMSE=0.74 μg/L; the quadratic polynomial model based on the B3 band reflectance can be used to estimate the total suspended matter concentration with R2=0.92 and RMSE=1 mg/L. The models were applied to quasi-synchronous GF-1/WFV data, which well reflected the spatial dis-tribution of Chlorophyll-a and total suspended matter concentration in the low-tidal Qiantang River. This research is a useful exploratory work to monitor the water color parameters of Qiantang River by the GF-1 satellite data, and the re-search methods and results offer reference for the study of water color remote sensing in other river basins.关键词
叶绿素a浓度/总悬浮物浓度/钱塘江/高分一号卫星/遥感模型Key words
chlorophyll-a concentration/total suspended matter concentration/Qiantang River/GF-1 satellite/re-mote sensing model分类
信息技术与安全科学引用本文复制引用
程春梅,李渊,丁奕,涂乾光,秦鹏..基于GF-1/WFV的钱塘江叶绿素a和总悬浮物浓度遥感估算[J].长江科学院院报,2019,36(1):21-28,8.基金项目
湖北省自然科学基金项目(2015CFB633) （2015CFB633）
