摘要
水体叶绿素a含量是二类水体水色遥感反演的主要参数之一。通过分析烟台近海水体实测反射光谱曲线,选取了特征波段及波段组合,建立了研究区叶绿素a含量遥感反演模型。通过对比不同反演模型可知:三波段模型是烟台近海水体叶绿素a遥感反演的最优模型,决定系数为0.660 8,均方根误差(RMSE)为0.59μg/L;其次是归一化荧光高度模型和反射峰面积模型,决定系数分别为0.621 3和0.558 9,RMSE分别为0.62μg/L和0.67μg/L。
The chlorophyll-a concentration in waters is one of the most important parameters in water color remote sensing. In order to retrieve chlorophyll-a concentration of Yantai coastal waters, The spectral characteristics of chlorophyll-a are analyzed according to the remote sensing reflectance curves. Some retrieval models of chlorophyll-a are built based on selected bands or band combination. We analyze those different retrieval models and compare them. In the end, the conclusion is achieved that three-band model is the optimal one with a determination coefficient of O. 6608 and a RMSE error of 0. 59 μg/L. The following ones are the normalized fluorescence height model,with a determination coefficient of 0. 621 3,RMSE error of 0. 62 μg/L, and the reflectance peak area model,with a determination coefficient of 0. 558 9 ,RMSE error of 0. 67 μg/L.
出处
《中国环境监测》
CAS
CSCD
北大核心
2015年第4期135-140,共6页
Environmental Monitoring in China
基金
环保公益项目"基于遥感技术的沿海港口总体规划环评生态承载力评价方法研究"(201409100-04)
863计划项目"机载大气和水环境污染监测技术和设备应用示范"(2014AA06A508)
国家自然科学基金项目"基于时序遥感影像异常检测的土地覆盖变化检测方法研究"(41401413)
