辽东湾海域典型营养盐指标分布规律的统计与评价

在详细了解辽东湾海域自然地理和水动力分布状况的基础上,对实际采样测站的营养盐检测资料进行统计,分析了辽东湾海域的水体环境质量状况,并利用单因子标准指数法评价了辽东湾海域的污染现状。通过利用各监测站位的铵盐、硝酸盐及亚硝酸盐(无机氮)和磷酸盐的采样检测结果值,给出各典型营养盐指标的浓度分布趋势图,可见,辽东湾海域海水中无机氮和活性磷酸盐分布有明显的季节性,各个季节表现出不同的特点;而且辽东湾海域的无机氮超标四季均比较明显,活性磷酸盐污染除冬季较重外,其他季节较轻。

Statistical Analysis and Evaluation of Nutrient Distribution in Liaodong Bay

Based on hydrodynamics distribution and physical geography in Liaodong bay ,water envi-ronment quality was analyzed in Liaodong bay by the statistics of nutrient detection data from actual station .The pollution status was evaluated by using the method of single factor pollution index .The typical nutrient concentration distribution trend chart was obtained though the detection results of sampling from various monitoring stations ,including inorganic nitrogen （ ammonium ,nitrate ,ni-trite） and active phosphate .From the chart ,the distribution trend of nitrogen and active phosphate were same during each season .But the distribution has obviously seasons and characteristics .In addi-tion ,inorganic nitrogen exceed obviously the standard in each season .Active phosphate exceed seri-ously the standard in winter .