叶绿素a浓度是反映湖泊水体营养状况的重要指标,本研究通过分析水体叶绿素a浓度与高光谱反射特征的相互关系,采用一阶微分值和峰值比值法分别建立了叶绿素a的高光谱定量反演模型,在此基础上与同步MODIS数据敏感波段建立卫星定量反演模型。结果表明:叶绿素a荧光峰出现在波段690nm-700nm,波段696nm一阶微分值相关系数最大;波段700nm与波段680nm的比值与其对数相关性较好,MODIS数据波段2和波段1比值的指数模型为最佳的回归模型。 Chlorophyll a concentration is an important index to reflect the nutritional status of lake water. In this study, the relationship between chlorophyll a concentration and hyperspectral reflectance was analyzed. The first-order differential and peak ratio methods were used to establish a hyperspectral quantitative inversion of chlorophyll a On this basis, a satellite quantitative inversion model is established with the synchronous MODIS data sensitive band. The results showed that: the fluorescence peak of chlorophyll a appeared in the band 690nm-700nm, and the first-order differential coefficient of the band 696nm had the largest correlation coefficient; the ratio of the 700nm band to the 680nm band had a good correlation with the logarithm; the exponential model of MODIS band 2 and band 1 ratio For the best regression model.