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滆湖位于江苏省常州市西南13km处,水面面积164km~2,平均水深1.26m,是太湖湖群的重要组成部分。其氮、磷平衡研究结果表明:①入湖氮、磷总量分别为4120.29t/a和270.03t/a;其中以河道入湖量最大,分别占入湖总量的71.9％和57.1％,其次是养殖投饵,分别占入湖总量的12.4％和29.9％;氮、磷的滞留系数分别为0.36和0.35,年滞留量分别为1481.6t和94.82t。②湖水的氮、磷负荷较大,但由于水草的吸收净化作用,湖水水质仍能保持较低水平。③网围养殖区底泥氮、磷释放强度大。非网围区水草根系的吸收对底泥氮、磷释放起到一定的抑制作用。
Lake is located 13 kilometers southwest of Changzhou City, Jiangsu Province, the surface area of 164km ~ 2, the average depth of 1.26m, is an important part of Taihu Lake Group. The results of nitrogen and phosphorus balance showed that: (1) The total amount of nitrogen and phosphorus entering the lake were 4120.29 t / a and 270.03 t / a, respectively, of which the maximum amount of water into the river was 71.9% and 57.1% Followed by farming and feeding, which accounted for 12.4% and 29.9% of the total amount of inputting into the lake respectively. The retention coefficients of nitrogen and phosphorus were 0.36 and 0.35, respectively, and the annual retained amounts were 1481.6t and 94.82t respectively. ② Lake nitrogen, phosphorus load, but due to absorption and purification of aquatic plants, lake water quality can still be maintained at a low level. ③ net Wai aquaculture zone sediment nitrogen, phosphorus release strength. Absorption of aquatic roots in non-net area played a certain role in the inhibition of nitrogen and phosphorus release from sediment.