The relation of chlorophyll-a concentration with the reflectance peak near 700 nm in algae-dominated waters and sensitivity of fluorescence algorithms for detecting algal bloom
The relation of chlorophyll-a concentration with the reflectance peak near 700 nm in algae-dominated waters and sensitivity of fluorescence algorithms for detecting algal bloom
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DOI：
10.1080/01431160902882512
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发表时间：
2010-01
影响因子：
3.4
通讯作者：
Dongzhi Zhao;X. Xing;Yuguang Liu;Jianhong Yang;Lin Wang
中科院分区：
文献类型：
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作者：
Dongzhi Zhao;X. Xing;Yuguang Liu;Jianhong Yang;Lin Wang
为了研究叶绿素a浓度与700 nm附近反射峰的关系，根据海洋现场测量和养殖池数据，获得了有害藻华(HAB)物种和非HAB藻类的反射光谱。结果表明，反射光谱的荧光线高度(Flh)与海水中的叶绿素a浓度具有良好的相关性，除Ceratium Furca和Heterosigma akashiwo外，两者的决定系数均大于0.86。特别值得注意的是，对于一些藻类，如Dicrateria zhanjiangensis Hu.，Pyramimonas sp.和新月菱形藻，相应的测定系数超过0.95。此外，对各种卫星荧光算法进行了比较，并对各种荧光算法的灵敏度进行了考察。结果表明，中分辨率成像光谱仪(MERIS)的设计波段比中分辨率成像光谱仪(MODIS)的波段更合理。
In order to investigate the relation of chlorophyll-a concentration with the reflectance peak near 700 nm, reflectance spectra of harmful algal bloom (HAB) species and non-HAB algae were obtained based on in situ measurements in the oceans and cultural tank data. It is found that the fluorescence line heights (FLH) of reflectance spectra and the concentrations of seawater chlorophyll-a have good correlation; their coefficients of determination are larger than 0.86, excepting Ceratium furca and Heterosigma akashiwo. It is specially noted that for some algae, such as Dicrateria zhanjiangensis Hu., Pyramimonas sp. and Nitzschia closterium, the corresponding coefficients of determination exceed 0.95. In addition, the various satellite fluorescence algorithms were compared, and the sensitivity of fluorescence algorithms was investigated. It is found that the designed bands of Medium Resolution Imaging Spectrometer (MERIS) are more reasonable than those of Moderate Resolution Imaging Spectroradiometer (MODIS) for detecting algal bloom.