When determining the trophic types of the four lakes by chlorophyll-a, DO,saturation of DO and total content of P, Shitoukoumen Reservoir, Jingyue Pond andXinlicheng Reservoir all belong to mesotrophic water, and South Lake belongs to eutrophicwater.

• 利用叶绿素a、溶解氧、溶解氧饱和度及总磷浓度平均值对四个水体的营养类型所做的划分结果表明,若依据世界经济合作与开发组织(OECD)规定的湖泊叶绿素a划分标准,石头口门水库、新立城水库和净月潭水库三个水体属中营养型,南湖为富营养型;