本文關鍵詞： 渤海 營養(yǎng)鹽 評價 富營養(yǎng)化　出處：《漁業(yè)科學進展》2016年02期 　論文類型：期刊論文

【摘要】：根據(jù)2014年春季和冬季對渤海營養(yǎng)狀況調查結果,分析了該水域營養(yǎng)鹽含量的變化和分布,并對該水域營養(yǎng)水平狀況進行了評價。結果顯示,2014年春季無機氮含量水平高于冬季,NO2--N、NH4+-N平均含量分別是冬季的1.94、3.49倍,NO3--N的平均含量相差不明顯,而PO43--P平均含量低于冬季,約為冬季的80%。與海水水質標準相比,冬季無機氮含量總體水平低于海水一類標準,活性磷酸鹽含量略高于海水一類標準值。春季無機氮含量總體水平低于海水一類標準值,活性磷酸鹽含量低于海水一類標準值。從水平分布來看,DIN含量基本呈近岸高于中部的分布趨勢,而PO43--P含量呈近岸低于中部的分布趨勢,受黃河口徑流的影響,萊州灣DIN和PO43--P等值線較為密集。2014年冬季N/P比值略低于Redfield比值,而春季N/P比值高于Redfield比值,春季無機磷相對缺乏。根據(jù)潛在性富營養(yǎng)化評價模式,2014年冬季(2月)和春季(5月)渤海水域營養(yǎng)水平較低,均屬貧營養(yǎng)水平。冬季有機污染指數(shù)A值為0.66,屬有機污染程度Ⅰ級,水質較好,春季有機污染指數(shù)A值為1.05,屬有機污染程度Ⅱ級,水質開始受到污染。
[Abstract]:Based on the results of the investigation on the nutritional status of the Bohai Sea in spring and winter of 2014, the variation and distribution of nutrient contents in the Bohai Sea were analyzed. The results showed that the average content of inorganic nitrogen in spring in 2014 was higher than that in winter, which was 1.94 ~ 3.49 times higher than that in winter, respectively, but the average content of PO43--P was lower than that in winter. Compared with the standard of seawater water quality, the total level of inorganic nitrogen in winter is lower than that of the first class of seawater, the content of active phosphate is slightly higher than that of the first class of seawater, and the total level of inorganic nitrogen in spring is lower than that of the first class of seawater. The content of active phosphate is lower than the standard value of sea water, and the content of tin is higher than that of the middle, and the content of PO43--P is lower than that of the middle, which is influenced by the runoff of the Yellow River estuary, the content of active phosphate is lower than that of the first class of seawater. The isolines of DIN and PO43--P in Laizhou Bay are denser. In 2014, the ratio of N / P is slightly lower than that of Redfield in winter, but the ratio of N / P in spring is higher than that of Redfield. According to the evaluation model of latent eutrophication, the nutrient level of Bohai Sea in 2014 winter (February) and spring (May) was low, and the organic pollution index (A) in winter was 0.66, belonging to grade 鈪，

本文編號：1526875