Spectral absorption coefficient of phytoplankton and its relation to chlorophyll a and remote sensing reflectance in coastal waters of southern China

编号 zgly0000369953

文献类型 期刊论文

文献题名 Spectral absorption coefficient of phytoplankton and its relation to chlorophyll a and remote sensing reflectance in coastal waters of southern China

学科分类 220.1060;森林生态学

作者 CAOWenxi  YANGYuezhong  LIUSheng  XUXiaoqiang  YANGDingtian  ZHANGJianlin 

作者单位 LEDLaboratory 

母体文献 Progress in Natural Science;自然科学进展: 英文版 

年卷期 2005,15(4)

页码 342-350

年份 2005 

分类号 Q948.891 

关键词 光谱  吸收系数  浮游植物  叶绿素  遥感技术  反射系数  中国  生物光学模式 

文摘内容 The spectral absorption coefficient of phytoplankton in coastal waters of southern China is investigated. Large variations in the absorption coefficient of phytoplankton are found. The absorption coefficient of phytoplankton at 443 nm ranged from 0. 006 m^-1 to 0.484 m^-1, with an average value of 0.067 m^-1 The chlorophyll-specific absorption coefficient of phytoplankton is also a bio-optical variable, with a spectrally averaged value of 0.025 m^2·mg^-1. The variations of chlorophyll-specific absorption coefficient are mainly attributed to pigment composition of phytoplankton and package effect. The chlorophyll-specific absorption coefficient of phytoplankton decreases with the increasing of chlorophyll a concentration. This relationship can be described by a power law function, with the parameters and the coefficient of determination r^2 as functions of wavelength, but the parameters describing the relationships in present study differed from that in Case 1 waters, thus the regional adjustment of model parameters was of particular significance for improving the accuracy of bio-optical algorithms for estimation of Chl-a concentration and primary production from remotely sensed data. Regression analysis of reflectance (Rrs) ratio and absorption coefficient of phytoplankton (αph) indicates a close correlation between them, which means that it is possible to retrieve absorption coefficient of phytoplankton using ocean color remote sensing data in optically complex coastal waters。