吕泗渔场海洋学特征与定置网渔获性能的研究

Study on Oceanographic Characteristics and Catch Performance of Setnets of LVSi Fishing Ground

本文以2006—2009年吕泗渔场海洋学调查和已有相关研究相结合。综述吕泗渔场的地形、地貌、水团与温盐要素特征和渔业生物多样性特点。在此基础上,论述吕泗渔场帆张网、坛子方、洋方网、深水方、单根方主要定置渔具的分布及其渔获性能,并进一步阐明辐射沙脊是该渔场最突出特点,适应该地貌开发出不同类型网具的有效性与多样性。吕泗渔场当前定置网具属过量发展,渔业资源已衰退,应该加强管理和资源保护。

Based on 2006—2009 LvSi fisheries oceanographic surveys and historical research data,the fisheries topography,geomorphology,water masses,the thermohaline characteristics and fisheries biodiversity of fishing ground are summarized.On this basis,this paper reports the distribution and catch performance of setnets,and clarify that the radioactive sand ridge is the most prominent feature of fisheries ground.Different types of nets are developed to adapt to the landform with the high catch effectiveness.Because LvSi setnets fisheries have been excessive developed,fishery resources are declining.We should strengthen the management and resource conservation in LvSi waters.