2008年11月、2009年4月、2009年6月分别对太湖水体56，31个样点、巢湖水体30个样点进行野外实验。对散射系数与总悬浮物浓度之间的关系进行分析，建立不同季节、不同湖泊散射系数与总悬浮物浓度之间的关系模型，得到比散射系数；建立了不同季节和湖泊的散射系数光谱模型；运用生物光学模型，估算出后向散射概率，并讨论其波谱的依赖性。结论为：1）太湖水体不同季节以及巢湖水体的散射系数与总悬浮物浓度具有较为稳定的线性关系；2）太湖水体不同季节以及巢湖水体具有较为稳定的比散射系数，其值约为0.63 m2/g；3）太湖不同季节的水体、巢湖水体的散射系数具有较为稳定的光谱模型；4）太湖不同季节的水体、巢湖水体的后向散射概率并无光谱依赖性。

In November 2008, April and June 2009, field experiments were conducted with 56 and 31 water samples in Taihu Lake and 30 samples in Chaohu Lake. Then the relation between scattering coefficient and total suspened matter concentrations is analyzed. The scattering model for different seasons and different lakes is developed, and the stable specific scattering coefficient of different seasons and lakes is obtained. Stable scattering coefficient spectral model for different lakes and different seasons is established. Then bio-optical model is used to estimate backscattering ratio, then its spectral dependence is discussed. It can be concluded 1) scattering coefficient of Taihu Lake in different seasons and in Chaohu Lake has stable linear relation with total suspened matter concentrations; 2) Taihu Lake in different seasons and Chaohu Lake have a stable specific scattering coefficient, which is about 0.63 m2/g; 3) Scattering coefficient of Taihu Lake and Chaohu Lake has relatively stable spectral model; 4) Backscattering ratio of Taihu Lake in different seasons and Chaohu Lake is independent on spectrum.