福建台山列岛厚壳贻贝资源调查与评估
发布时间：2018-09-05 13:03
【摘要】：为了解海域厚壳贻贝栖息和资源补充情况,探索资源持续利用,作者对福建台山列岛周边海域厚壳贻贝(Mytilus coruscus)资源进行潜水调查及样方采样分析,研究了该海域厚壳贻贝的分布密度、生物量、生物学特征;结合旁侧声纳和测深仪对海底面状地貌与海底地形进行扫测,并对海底表层沉积物进行采样分析,研究了厚壳贻贝生境底质特点、栖息覆盖率等。台山列岛海域调查结果显示岩礁面积共2.189822km2,厚壳贻贝平均密度151.33个/m~2、平均生物量6.89 kg/m~2,平均质量45.55 g/个。计算显示当其栖息覆盖率达到10%、20%、30%和40%时,该海域厚壳贻贝资源增长量分别为520、1 039、1 559和2 079 t/a。目前该海域年均采挖量约为762.8~1 125 t/a。据此,只有当厚壳贻贝覆盖面积达到该岩礁区域面积的20%~30%时,其资源量才能得到有效补充。剖面调查结果表明目前该海域厚壳贻贝覆盖率仅为12%~24%,由此可见,该海域厚壳贻贝资源将面临资源枯竭风险,为更有效地保护和持续利用厚壳贻贝资源,必须采取有效的管理对策措施。
[Abstract]:In order to understand the habitat and resource supplement of mussels in the sea area and to explore the sustainable utilization of resources, the author conducted a phreatic investigation and sample sampling analysis on the (Mytilus coruscus) resources of mussels in the waters around Taishan Islands, Fujian Province. The distribution density, biomass and biological characteristics of thick shell mussels in this sea area were studied, and the surface topography and submarine topography were scanned with side sonar and sounder, and the surface sediments were sampled and analyzed. The characteristics of habitat and habitat coverage of mussels were studied. The investigation results of Taishan Islands show that the reef area is 2.189822km2, the average density of thick shell mussel is 151.33 / mm2, the average biomass is 6.89 kg/m~2, and the average mass is 45.55g / person. The results show that when the habitat coverage reaches 30% and 40%, the increase of mussel resources in this area is 520 / 1039 / 1 559 and 2 079 t / a, respectively. At present, the average annual mining volume in the area is about 762.8 t / a. Therefore, only when the covered area of thick shell mussel reaches 20 ~ 30% of the area of the reef area can its resources be effectively replenished. The results of the section investigation show that the coverage of thick shell mussels in this sea area is only 120.24% at present. It can be seen that the resources of thick shell mussels in this sea area will face the risk of resource depletion, in order to protect and utilize the thick shell mussel resources more effectively. Effective management measures must be taken.
【作者单位】： 福建海洋研究所;福建省海岛与海岸带管理技术研究重点实验室;厦门大学海洋与地球学院;
【基金】：福建省海洋与渔业厅科技项目((2012)013号)
【分类号】：S932.6
，
本文编号：2224359
[Abstract]:In order to understand the habitat and resource supplement of mussels in the sea area and to explore the sustainable utilization of resources, the author conducted a phreatic investigation and sample sampling analysis on the (Mytilus coruscus) resources of mussels in the waters around Taishan Islands, Fujian Province. The distribution density, biomass and biological characteristics of thick shell mussels in this sea area were studied, and the surface topography and submarine topography were scanned with side sonar and sounder, and the surface sediments were sampled and analyzed. The characteristics of habitat and habitat coverage of mussels were studied. The investigation results of Taishan Islands show that the reef area is 2.189822km2, the average density of thick shell mussel is 151.33 / mm2, the average biomass is 6.89 kg/m~2, and the average mass is 45.55g / person. The results show that when the habitat coverage reaches 30% and 40%, the increase of mussel resources in this area is 520 / 1039 / 1 559 and 2 079 t / a, respectively. At present, the average annual mining volume in the area is about 762.8 t / a. Therefore, only when the covered area of thick shell mussel reaches 20 ~ 30% of the area of the reef area can its resources be effectively replenished. The results of the section investigation show that the coverage of thick shell mussels in this sea area is only 120.24% at present. It can be seen that the resources of thick shell mussels in this sea area will face the risk of resource depletion, in order to protect and utilize the thick shell mussel resources more effectively. Effective management measures must be taken.
【作者单位】： 福建海洋研究所;福建省海岛与海岸带管理技术研究重点实验室;厦门大学海洋与地球学院;
【基金】：福建省海洋与渔业厅科技项目((2012)013号)
【分类号】：S932.6
，
本文编号：2224359
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