Suspended solids concentration inversion seasonal spatial distribution in Poyang Lake, China, ,

Suspended solids concentration is an important parameter to evaluate the quality and environment of water. It has very important significance to get the time-spatial distribution information of suspended solids concentration in lakes for their environmental management based on the remote sensing technology. The four seasons’ inversion models were built according to the suspended solids concentration data of Poyang Lake continuously measured in spring, summer, autumn and winter season of 2009 and 2012 year and combining with the regression analysis of the lake’s multi-band MODIS images in the same period. Then they are used to obtain the suspended solids concentration of the lake in annual spring, summer, autumn and winter seasons from year 2000 to 2013. The results show that the suspended solids concentration of Poyang Lake is higher in the center of the lake and the main channel while is relatively lower in coastal waters, what is more the concentration was increasing year by year from 2000 to 2013 with high value in spring and autumn but low in summer and winter. Human activities have a great influence on the suspended solids concentration changes, too.