舟山蛏子港深水网箱养殖环境分析

Analysis of the deep-water environment for cage culture in Chengzigang Port of Zhoushandao Islands

根据2001年11月1～10日在舟山蛏子港进行水文调查所获取的水深、海流、盐度、悬浮体等资料,对蛏子港深水网箱养殖的环境条件进行了分析,结果表明:该港海区海水平均流速为35.1～100cm/s的出现频率占56%～84%,表、底层盐度平均值为25.227～26.045,悬浮体含量为0.1～0.399kg/m3的出现频率达92%;港区有多个口门与外海相通,海域水体交换活跃。另外,该港的水深和避风条件也基本符合深水网箱养殖的要求,是一个比较适合于海水鱼深水网箱养殖的基地。

Based on the water depth, current, salinity and suspended load data obtained from the hydrological survey during November 2001 in the Port of Chengzigang,Zhoushandao Islands, the analysis of the deep-water environment for cage culture in the Port of Chengzigang is made. The occurrence frequency of the average current velocities between 35.1 and (100.0) cm/s is 56%～84%. The average values of the salinity in the surface and bottom layer are 25.227 and 26.045 respectively. The occurrence frequency of the suspend load contents in the range of 0.100 kg/m^3 to 0.399 kg/m^3 is 92%. The port has several waterways connecting to the open seas, resulting in an active water body exchange. The results show that the Port of Chengzigang is a suitable base for the sea fish net-culture.