红枫湖水体中磷的时空分布研究  

An Analysis on Spatial and Temporal Distribution of Phosphorus in Water Body of Hongfeng Lake

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作  者:施阳[1] 李培培[2] 刘定富[3] 王家齐[4] 

机构地区:[1]上海市环境科学研究院,上海200233 [2]中机国际工程设计研究院有限责任公司华东分院,南京210043 [3]贵州大学化学与化工学院,贵阳550003 [4]南京大学环境学院,南京210093

出  处:《上海环境科学》2014年第3期109-114,共6页Shanghai Environmental Sciences

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.

关 键 词: 富营养化 时间 空间 

分 类 号:X517[环境科学与工程—环境工程]

 

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