太湖水体叶绿素浓度与反射光谱特征关系的研究  

Research on Correlations between Chlorophyll Concentration and Reflectance Spectral of Taihu Lake

作　　者：冯伟[1] 冯学智[1] 马荣华[2] 

机构地区：[1]南京大学地理信息科学系,南京210093 [2]中国科学院南京地理与湖泊研究所,南京210008

出　　处：《遥感信息》2007年第1期18-21,共4页Remote Sensing Information

基　　金：中国科学院领域前沿项目专题(CXNIGLAS-A02-014)

摘　　要：根据2004年10月在太湖实测的水体反射光谱及实验室分析得到的叶绿素浓度数据,对太湖水体反射光谱特征与叶绿素浓度之间的关系进行探讨与分析。研究结果表明:水体叶绿素浓度与各波长处的反射光谱相关性不大,但是反射光谱经过比值法和微分处理后,两者具有很好的相关性,而且叶绿素浓度与反射光谱700nm附近波峰几何形态特征(波峰位置、面积、净高度)相关性很好,建立太湖水体叶绿素浓度估算模型。Based on the water reflectance spectra and chlorophyll concentration measured in October, 2004, this study was conducted in order to discuss and analyze the correlation between reflectance spectra and chlorophyll concentration of Taihu Lake. The results showed that the correlation between the reflectance spectra of each band and the chlorophyll concentration was low. But the ratio of reflectance and first derivative reflectance were found to be significantly correlated with the chlorophyll concentration. The geometric characteristics of reflectance spectra at the ridge of 700nm were also well correlated with the chlorophyll concentration. The estimation model of chlorophyll concentration of Taihu was established.

关 键 词：叶绿素 反射光谱 高光谱遥感 回归分析 

分 类 号：P237.9[天文地球—摄影测量与遥感]