中文摘要：

选取太湖“水华”优势藻类即蓝藻门中的铜绿微囊藻和绿藻门中的斜生栅藻作为研究对象，利用AC-S分别测量两种纯藻的吸收系数和散射系数．对铜绿微囊藻和斜生栅藻的固有光学属性进行定性和定量分析，并建立其生物光学模型．结果表明：铜绿微囊藻的藻红蛋白吸收带和斜生栅藻的藻蓝蛋白吸收带的光谱吸收特性的差异性较为明显；粒径相对较小的铜绿微囊藻的包裹效应、吸收系数对散射系数的影响程度要明显小于粒径较大的斜生栅藻，铜绿微囊藻吸收系数的P—L模型的线性斜率和幂指数要大于斜生栅藻的吸收系数模型系数；由于散射系数受吸收系数影响程度的不同，使得散射系数光学模型变量因子具有一定的差异，受吸收系数影响较小的铜绿微囊藻的变量因子为波段比值λ0／λ，λ0为参考波长，而受吸收系数影响较大的斜生栅藻的变量因子为吸收系数比值a（λo）／a（λ），a（λ0）为参考波段吸收系数，a（λ）为波长为λ的吸收系数，两种藻类的散射模型都符合国际上通用的S-P模型形式．

英文摘要：

Microcystis aentginosa and Scenedesmus obliquus, which were the main part of algal community in Lake Taihu, were studied in this paper. Under the definite conditions of light and temperature circumstance, they were cultivated. Then their absorption and scattering coefficients were measured by AC-S （Wetlabs Inc）. M. aentginosa and S. obliquus had similar absorption spectra characteristics, but the phycoerythrin and phycocyanin＇s absorption positions between M. aentginosa and S. obliquus are different obviously. Package effect and the effect of absorption on scattering of M. aentginosa, which has relatively small size, was smaller than that of S. obliquus, which has relatively big size, however, the linear and power slope of P-L absorption model of M. aentginosa was bigger than that of S. obliquus. Variable factors of scattering optical model had some differences because of different effect absorption on scattering. Variable factors of M. aentginosa and S. obliquus scattering model were λ0/λ and a（ λ0）/a（λ） , respectively. Both M. aentginosa and S. obliquus scattering models were suit for international common form of S-P model.