武汉东湖磷含量的变动及其分布  

THE VARIATION AND DISTRIBUTION OF THE PHOSPHORUS CONTENT IN DONGHU LAKE, WUHAN

作　　者：张水元[1] 刘衢霞[1] 华俐[1] 

机构地区：[1]中国科学院水生生物研究所

出　　处：《水生生物学报》1989年第4期297-304,共8页Acta Hydrobiologica Sinica

摘　　要：本文总结了武汉东湖水体中磷含量(均以PO_4计算)的周年逐月季节和年际变动及其分布上的差异(1973—1985年)。按面积加权法计算总磷的平均含量为0.244毫克/升(1983—1985年),总溶解磷和溶解活性磷的平均含量分别为0.121毫克/升和0.051毫克/升(1981—1984年)。总磷和总溶解磷周年中出现两次高峰含量,即春季(3—5月)和夏末秋初(8—9月)。低含量出现在水温最低的冬季(12—2月)。周年中溶解活性磷高峰含量出现在冬末春初(1—3月),低含量多数出现在春末夏初(5—7月)。东湖水体中磷含量平面分布有明显的差异,而垂直分布表层和底层差异小。各种形态磷的组成中颗粒磷所占比例最大(1983—1984年平均值),平均占总磷63.4％,溶解非活性磷所占比例最小,平均占总磷12.0％。This paper summarizes the dynamics of phosphorus content (all referred to PO_4) in 1973—1985 in Lake Donghu, Wuhan. In terms of area weighted means, the contents of TP, TDP and DRP in the observing period were 0.244 mg/l(1983—1985), 0.121 mg/1 (1981—1984) and 0.051 mg/1 (1981—1984) respectively. Contents of both of the total phosphorus (TP) and the total dissolved phosphorus (TDP) were observed to have two peaks in each year, one in March-May, and another in August-September, while their lowest values were measured in winter (December-February) when water temperature became the lowest. As to the dissolved reactive phosphorus (DRP), the highest content was measured in January-March and the lowest in May-July.The phosphorus contents in the Lake increased obviously in last decade and fluctuated markedly with the years. There was conspicuous difference in the horizontal distribution of phosphorus in the Lake, but little difference was observed in its vertical distribution. As for the composition of phosphorus, the amount of the particulate phosphorus (PP) was the largest and the dissolved non-reactive phosphorus (DNP) was the smallest, amounting 63.4% and 12.0% of the total phosphorus, respectively, in 1983—1984.

关 键 词：总磷 总溶解磷 溶解活性磷 溶解非活性磷 颗粒性磷 湖泊 水体 磷含量 富营养化 

分 类 号：X524[环境科学与工程—环境工程]