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1 天津近海自然条件和主要渔业资源特点天津浅海位于渤海三大渔场之一的渤海湾产卵场的中心部位,从海岸线以下到负15m等深线的浅海水域,正处于海河口、蓟运河口的河口水下三角洲水域。有多条河流人海,气候适宜,底质地貌组合多样,浮游生物丰富,既适于鱼、虾、蟹、贝亲体产卵繁殖,又适于幼鱼、稚虾等索饵、肥育、生长以及地方性的鱼、虾、蟹、贝常年栖息。遂使本海区成为渤海湾产卵场的主体部位,连潮间带也蕴藏着丰富的低值贝类等生物饵料资源,依分布于天津沿岸和近海的各种渔业资源的地理分布特点,大体可分为洄游性和地方性资源两大类。
1 Tianjin Coastal Natural Conditions and Characteristics of Major Fishery Resources Tianjin shallow sea is located in the central part of the Bohai Bay spawning ground, one of the three major fishing grounds in the Bohai Sea. From the coastline to the shallow sea at a depth of minus 15m, it is at the mouth of the Haihe River, The estuary underwater delta waters. There are many rivers and streams, suitable climate, rich diversity of sediment and physiognomy, rich plankton, suitable for fish, shrimp, crab, shell body lay eggs breeding, but also for juvenile, juvenile shrimp bait, fattening, growth And local fish, shrimp, crab, shell perennial habitat. Therefore, the sea area became the main part of the spawning ground in the Bohai Bay. Even the intertidal zone was also rich in biological feed resources such as low-value shellfish. According to the geographical distribution of various fishery resources distributed along the coasts and offshore of Tianjin, Can be divided into two major categories of migratory and local resources.