黄河口附近海域营养盐行为及年际变化分析

摘要

Based on the nutrient data from thirteen cruises of oceanographic survey involving 24 stations carried out in vicinity waters of the Yellow River estuary in May and August from 2004 to 2010,the nutrient charactcristics and thcir annual variations of dissolved inorganic nitrogen,reactive phosphate and silicate were studied.The results showed that the concentration of nitrate had significant negative relationship with the salinity,and that the concentration of dissolved inorganic nitrogen decreased while the concentration of phosphate and silicate fluctuated in these seven years,and that ammonium increased obviously before the year of 2008.The higher concentration of dissolved inorganic nitrogen led to medium phosphorus limiting potential eutrophication in vicinity waters of the Yellow River estuary.%根据2004年-2010年5月和8月共13个航次对黄河口附近海域24个站位的海水化学调查资料,研究了该海域的无机氮、活性磷酸盐和活性硅酸盐等营养要素的行为及年际变化.结果表明,无机氮中硝酸盐浓度与盐度呈显著负相关;7年间,无机氮浓度略有下降,磷酸盐和硅酸盐浓度呈波动趋势,2008年以前铵盐浓度上升趋势明显;由于无机氮浓度相对过高造成该海域属于磷限制潜在性富营养状况.