检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
机构地区:[1]青岛海洋大学水产学院
出 处:《青岛海洋大学学报(自然科学版)》1998年第1期36-42,共7页Journal of Ocean University of Qingdao
摘 要:产量模型是渔业管理中预测最大持续产量(MSY)的经典方法。MSY仍然是渔业管理的重要目标之一。文章应用模拟数据比较了最常用的产量模型。蒙特卡罗研究表明WaltersandHilborn的动态模型表现最好。这些方法被应用在小鳞鱼箴(HemirhamphussajoriTemminckandSchlegel)种群。Wal-tersandHilborn方法的Bootstrap结果是2250t(吨)的MSY和806艘船的最佳捕捞努力量。与目前2000艘船的努力量水平比较,渔业处于过度捕捞状态。Production models are classical methods to predict the MSY (maximum sustainable yield) for fisheries management, which is still one of the major fisheries management goals. The paper compares the most popularly used production models using simulated data. Monte Carlo simulation analysis showed that the dynamic model of Walters and Hiborn method worked consistently well. The methods were applied to the Japanese half beak fish (Hemirhamphus sajori Temminck and Schlegel) data. Bootstrap estimations of the Walters and Hilborn method produced an MSY of about 2250 tons and an optimum fishing effort of 806 boats. In comparison with the current effort level of about 2000 boats, the fishery is overfished, therefore a major reduction of fishing effort is needed.
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:18.226.163.238