星湖水动力条件及水质模型的研究 Ⅰ.水动力条件与水环境质量调查

RESEARCH OF HYDROLOGICAL CONDITION AND WATER QUALITY MODEL OF XINGHU LAKE Ⅰ.INVESTIGATION OF HYDROLOGICAL CONDITION AND WATER QUALITY

对广东省肇庆市星湖水位、水量平衡、入湖污染源和水质现状进行了近2年的实测调查，并结合历史资料，分析了星湖水动力特征、水质现状特征和水质变化趋势。结果表明：星湖水源补给主要是北岭山汇集的雨水和湖面降雨；湖水位主要受人工调节及降雨的影响，常年变幅不大；湖泊交换系数为1.17；生活污水是主要的污染源，主要的水环境问题是有机污染和富营养化；最近几年来，总体水质状况变化不大。针对以上特点，提出了几条治理建议。

years of on spot investigations were undertaken i nto the water level,the water cycle,sources of pollution and water quality of Xi nghu Lake,located in the city of Zhaoqing,Guangdong Province.The characteristics of hydrological condition,water quality and its changing tendency were analyzed .The results show that the supply of Xinghu Lake consisted mostly of runoff fro m the mountain of Beiling and the rainfall on the surface of the Lake;the water level varied in a small range,affected by the artificial regulation and the prec ipitation;the water exchanging rate was 1.17,which reflected the poor condition for the diffusion of pollutants;domestic sewage was the main source of pollution ;and the water problems include were organic pollution and eutrophication.Some c ountermeasures were provided:an improvement of the Lake management,stressing the control of organic pollution,and re building of the Lake ecosystem aimed at pollution control.