基于GF-1/WFV的钱塘江叶绿素a和总悬浮物浓度遥感估算

doi:10.11988/ckyyb.20170701

长江科学院院报 ›› 2019, Vol. 36 ›› Issue (1): 21-28.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

程春梅¹, 李渊², 丁奕³, 涂乾光¹, 秦鹏⁴

1.浙江水利水电学院测绘与市政工程学院,杭州 310018;
2.浙江工商大学旅游与城乡规划学院,杭州 310018;
3.浙江省水文局,杭州 310024;
4.浙江水利水电学院水利与环境工程学院,杭州 310028

收稿日期:2017-06-19 出版日期:2019-01-01 发布日期:2019-01-17
作者简介:程春梅(1987-),女,湖北武汉人,讲师,博士,主要从事水环境遥感研究。E-mail:ccm8711@163.com
基金资助:
国家自然科学基金青年基金项目(41501374);浙江省自然科学青年基金项目(LQ16D010001);浙江省教育厅科研项目(Y201534666);浙江省教育厅访问学者专业发展项目(FX2016060)

Remote Sensing Estimation of Chlorophyll-a and Total Suspended Matter Concentration in Qiantang River Based on GF-1/WFV Data

CHENG Chun-mei¹,LI Yuan²,DING Yi³, TU Qian-guang¹,QIN Peng⁴

1.College of Geomatics and Municipal Engineering, Zhejiang University of Water Resources and Electric Power,Hangzhou 310018, China;
2.School of Tourism and Urban-Rural Planning, Zhejiang Gongshang University,Hangzhou 310018, China;
3.Hydrological Bureau of Zhejiang Province, Hangzhou 310024, China;
4.School of Hydraulic and Environment Engineering, Zhejiang University of Water Resource andElectric Power, Hangzhou 310018, China

Received:2017-06-19 Published:2019-01-01 Online:2019-01-17

摘要/Abstract

摘要： 为了探究高分一号(GF-1)卫星对河流水体水质参数遥感反演的效果,使用GF-1卫星数据的16 m分辨率的GF-1/WFV传感器数据和地面实测数据,基于地面实测光谱反射率数据模拟WFV波段组合,构建水体叶绿素a和总悬浮物浓度遥感模型,从而对钱塘江流域杭州段水体水质参数进行估算。研究结果表明:基于B1-B3差值的二次多项式模型可用于叶绿素a浓度估算(R²=0.83,RMSE=0.74 μg/L),基于B3波段的二次多项式模型可用于总悬浮物浓度的估算(R²=0.92,RMSE=1 mg/L);通过模型应用于准同步的GF-1/WFV数据,较好反映了低潮位钱塘江杭州段水体叶绿素a和总悬浮物浓度的空间分布,为高分一号卫星数据遥感监测钱塘江水色参数做出了有益的探索性工作。研究方法及结果对其他流域河流水色遥感研究具有参考价值。

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

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 constructed 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 distribution 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 research methods and results offer reference for the study of water color remote sensing in other river basins.

Key words: chlorophyll-a concentration, total suspended matter concentration, Qiantang River, GF-1 satellite, remote sensing model

中图分类号:

TP79

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.

CHENG Chun-mei,LI Yuan,DING Yi, TU Qian-guang,QIN Peng. Remote Sensing Estimation of Chlorophyll-a and Total Suspended Matter Concentration in Qiantang River Based on GF-1/WFV Data[J]. JOURNAL OF YANGTZE RIVER SCIENTIFIC RESEARCH INSTI, 2019, 36(1): 21-28.

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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

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