山东半岛荣成湾月湖环境特征研究

ENVIRONMENTAL CHARACTERISTICS OF SEAWATER IN THE YUEHU INLET, RONGCHENG BAY, CHINA

月湖是山东荣成湾内的一个正在开发水产养殖业与旅游业的小海湾,然而在人为活动干预下,月湖的环境与生态系统发生了剧烈的变化,如水质恶化、水产品产量下降等。1999 年夏季开始对月湖开展了环境化学的调查。结果表明,海水溶解氧的含量正常,在某些站位上溶解氧饱和度超过100% 。生化耗氧量一般小于4 m g/L。化学耗氧量则在3～4 m g/L之间。海水中氮,磷,硅含量均低于国家海水标准,表明月湖缺少陆地水供应来源。

The Yuehu Inlet is a lagoon inlet system located in the Rongcheng Bay, Shandong Province, China, with area of ~5 km 2 It has been undergoing development for aquaculture and tourism. In 1999 summer, a study on evironment of the Yuehu Inlet was carried out. The chemical results show that the dissolved oxygen (DO) contents were generally normal. At some locations DO solubility apeared to be >100%. the BOD 5 (five day biochemical oxygen demand) values were generally <4mg/L and COD 3~4mg/L. The seawater N, P and Si conents were lower than the Class I water type sepcified by the Chinese National Standard of Water Quality. The low nutrients distribution reflects little discharge from land, therefore lack of nutrients.