|关键词: MODIS 波段 叶绿素a 悬浮物 透明度 巢湖
|Application of Satellite MODIS in Monitoring the Water Quality of Lake Chaohu
WU Min1,2,3, WANG Xuejun1,2,3
1.College of Environmental Sciences;2.Key Laboratory for Surface Processes, Ministry of Education;3.Peking University, Beijing 100871, P. R. China
|Reliable, spatially covering and cost-efficient monitoring techniques of lakes are generally growing in importance as a consequence of increasing symptoms of the on-going entrophication process.The Moderate Resolution Imaging Spectrometer (MODIS) is significant in water monitoring because of free getting, high spectrum resolution and short observation periods.Lake Chaohu is one of the largest freshwater lakes of China and its pollution problem has attracted broad attentions.This research attempts to explore the possibility of predicting water quality using MODIS.In this paper, the water quality paxamelers such as the concentration of chlorophyll-a, suspended solids and secchi disk depth of Lake Chaohu have been studied.Simple regression and multivariate regression analysis were conducted to establish the relationship of water quality parameters with MODIS bands radiance.Results indicated that significant relationships were found between them (P<0.01).Bands 1-4 and 10-11 are very important in monitoring the water quality.
|Key words: MODIS bands radiance chlorophyll-a suspended solids secchi disk depth Lake Chaohu