FUNDAMENTAL PROPERTIES AND ANALYSIS OF WATER QUALITY IN A RESERVOIR AFFECTED BY LITTLE WATER USE AND TEA PLANTATION

Abstract

There are many reservoirs in trouble on eutrophication problem. This paper focused on a reservoir
whose water has rarely been used for agriculture or drinking. The many tea plantations distributed in the dam
basin are suspected to be the cause of the reservoir’s eutrophication. It was investigated that eutrophication
components such as nitrogen and phosphorus and how they relate to the tea plantations in the basin. With
reference to phosphorus, trophic levels were determined with Vollenweider plots and Carlson indices. With
reference to nitrogen, a field survey was carried out to investigate the properties of sulfate and then sulfate
concentration was analyzed with a simple model. The various activities to improve the water quality of the
reservoir are introduced. In conclusion, the dam reservoir water is typically eutrophic, and might be affected by
the fertilizer in tea plantations. The motion of surface water in the dam reservoir is similar with the property of
river, and then the sulfate concentration was analyzed with simple model.