摘要
通过对鄱阳湖实测光谱的特征分析,结合透明度野外量测,利用MODIS影像分期统计回归方法反演得到透明度信息和分析其时空变化。研究结果表明:红光和近红外波段是反演水质参数透明度的敏感波段,鄱阳湖丰水期、平水期和枯水期透明度变化较大,呈逐渐减小的趋势,与实测数据吻合。利用该遥感模型可以实现大面积鄱阳湖透明度实时动态监测的目的。
Through the characteristic analysis of spectral measured in Poyang Lake, based on the transparency of the field measurernents, transparency is retrieved with phased regression method by MODIS images and its spatial-temporal change are analyzed. The results show that： red and near infrared bands are sensitive to the transparency of water quality parameters inversion bands, trans- parency changes greater in high,average, low water periods, the trend is gradually reduced, consistent with the measured data.. Using remote sensing models can achieve a purpose of real-time dynamic monitoring transparency in Poyang Lake.
出处
《中国农村水利水电》
北大核心
2012年第1期30-33,共4页
China Rural Water and Hydropower
基金
国家自然科学基金资助项目(41040032)
国务院国家重大水专项(2008ZX07576-008)
关键词
鄱阳湖
透明度(SD)
遥感
时空特征
Poyang Lake
transparency （SD）
remote sensing
temporal-spatial characteristics
