一、前言象山港在浙江沿海中北部,是一个天然的半封闭型港湾。港口与大目洋渔场相连,纵深长度约60公里,总面积约89万亩,除东部入海口外,三面受群山包围,沿岸溪川众多,滩涂广阔,是多种水生动植物生长、繁殖、栖息、育肥的优良场所。它处副热带季风气候区,全年气候温和,雨量充沛,四季分明。港内透明度一般在1米左右;年平均水温17～18℃,7、8月份水温最高,1、2月份 I. Introduction Xiangshan Port in the north-central part of Zhejiang Province is a natural semi-enclosed harbor. The port is connected to the Yumouyang Fishery Farm in depth of about 60 kilometers and a total area of ​​about 890,000 mu. Except for the eastern part of the sea, surrounded by mountains on three sides, there are many brooks along the coast and a wide range of beaches. It is a variety of aquatic animals and plants that grow and reproduce , Habitat, fattening fine places. It is subtropical monsoon climate zone, the annual climate is mild, abundant rainfall, four seasons. The transparency of the port is generally about 1 meter; the average annual temperature is 17 ~ 18 ℃, the highest temperature in July and August, January and February