摘要
研究了红枫湖水体中磷的时空分布规律及特征，并对红枫湖水体中氮磷比值进行了分析。研究表明：（1）红枫湖水体底层，中层和表层各形态磷浓度枯水期最大，丰水期最小；（2）红枫湖表层水体磷主要形态为溶解态磷，底层主要为悬浮态磷，总磷和溶解态磷浓度垂直分布均呈底层〉中层〉表层规律；（3）湖区水体总磷水平分布极为不均，南湖高于北湖，水平分布趋势从高到低与水流方向基本一致；（4）红枫湖水体N／P比值在16．3～665之间，平均为100．7，磷为富营养化主要限制性因子。
Distribution characteristics of phosphorus in different forms in water body of Hongfeng Lake were analysed in various seasons, positions and depths as well as the ratio of nitrogen to phosphorus contents. The results showed that： （1） contents of phosphorus in different forms at bottom, middle and surface of the water column were the highest in drought period and lowest in flood season; （2） phosphorus was mainly in dissolved form in surface layer and in suspended state in bottom layer whilst the vertical distribution of total and dissolved phosphorus concentration showed a descending pattern from bottom up to surface in a water column; （3） the total phosphorus content distribution in the lake was extremely uneven with higher at south and lower at north, and tended to reduce down the stream; （4） the ratio of nitrogen to phosphorus contents in water body of Hongfeng Lake was in the range of 16.3 to 665 with a mean value of 100.7. Phosphorus content was found to be the main restrictive factor in the lake to cause eutrophication.
出处
《上海环境科学》
CAS
2014年第3期109-114,共6页
Shanghai Environmental Sciences
关键词
磷
富营养化
时间
空间
Phosphorus Eutrophication Temporal Spatial
