金塘水道海域冬季环境现状评价及其指示意义

2011年冬季于宁波镇海与舟山金塘之间海域分大小潮涨落时段进行了海域水体营养盐进行了调查分析。通过主要水质因子的时段比较，结合研究区水文动力背景，得到以下结论：（1）除无机氮超过国家三类海水标准外，其余海水指标均达到或优于三类海水水质要求；（2）无机氮、化学需氧量、石油类的极值均出现在3号站位；（3）无机氮的变化，显示营养盐受涨落潮的影响较大；（4）化学需氧量则与大小潮的相关性明显，其可能是潮流方向变化的原因。

Comprehensive Research of Assessment of Environmental Status Jintang Channel

The research including nutrient and heavy metal in sea water was presented between Zhenhai of Ningbo and Jintang island of Zhoushan. It compared the differences of water quality factors between spring tide and low tide, flood and ebb tide, at the same time, hydrological dynamic conditions were considered. The conclusions were that all water quality factors was not bad to three class seawater of the national standard, but inorganic nitrogen, the site No. 3 inorganic nitrogen, chemical oxygen demand and petroleum was upmost, inorganic nitrogen data was controlled under flood and ebb tide, and chemical oxygen demand and spring tide and low tide kept correlation significantly.