Position: Home > Articles > Retrieval of Chlorophyll a Concentration in the Waters of Zhanjiang Bay by Hyperspectral Technology
Journal of Guangdong Ocean University
2016,36
(6)
107-113
湛江港海域叶绿素a浓度的高光谱遥感反演
作 者：
蒋城飞;廖珊;付东洋;王文芳;李薛;刘大召;张莹;黄雄杰
单 位：
广东海洋大学海洋遥感与信息技术实验室
关键词：
湛江港海域;叶绿素a浓度;高光谱遥感;定量反演
摘 要：
基于表观光学法研究冬季湛江港海域高光谱遥感叶绿素a浓度的反演模型构建,结果表明,该海域单波段遥感反射率与叶绿素a浓度相关性低,波段比值和遥感反射率的一阶微分法可提高叶绿素a浓度反演精度。665nm处的遥感反射率一阶微分值与叶绿素a浓度相关性良好,相关系数可达0.84。一阶微分相关系数大于0.8的波段大部分处于叶绿素a红光强烈吸收区域,对于富营养化的湛江港海域采用一阶微分方法构建叶绿素a浓度的遥感反演模型具有合理性。
译 名：
Retrieval of Chlorophyll a Concentration in the Waters of Zhanjiang Bay by Hyperspectral Technology
作 者：
JIANG Cheng-fei;LIAO Shan;FU Dong-yang;WANG Wen-fang;LI Xue;LIU Da-zhao;ZHANG Ying;HUANG Xiong-jie;Lab of Ocean Remote Sensing & Information and Technology, Guangdong Ocean University;
关键词：
Zhanjiang bay;;chlorophyll a concentration;;hyperspectral remote sensing;;quantitative inversion
摘 要：
An inversion model for estimation of chlorophyll-a concentration in Zhanjiang Bay has been developed by using the apparent optical data collected in winter. As shown by the results, there is low correlation between single-band remote sensing reflectance and chlorophyll a concentration in the sea area. Moreover, it can improve the inversion accuracy utilizing the first order differential of reflectance and the band ratio. The first derivative value of the remote sensing reflectance at 665 nm has a good correlation with the chlorophyll a concentration, and its correlation coefficient can be equal to 0.84. Additionally, the bands of the first order differential correlation coefficient greater than 0.8 is mostly in red light strong absorption region of Chlorophyll a. Thus, it is reasonable to construct the remote sensing inversion model of the chlorophyll a concentration based on the first order differential in the Zhanjiang bay area.
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