渔业产量和资源生物量数值模型及相关因子的初步研究Preliminary Study on the Numerical Models and Related Factors in Fisheries Catch and Biomass
刘群,王艳君,尤凯
摘要(Abstract):
对于渔业的中长期预报计算 ,是渔业种群补充的关键问题。本文在单位补充量产量和单位补充量生物量模型中加入了亲体 补充模型即密度相关过程 ,并引入了白色噪音以模拟环境变化。结果表明 :本研究 (1)可以明确地给出渔业种群崩溃的可能性 ,估计出达到崩溃时的捕捞死亡率 ;(2 )可以估计最大持续产量的绝对值 ;(3 )引入的白色噪音可以模拟环境变化对产量与捕捞死亡率和产量与亲体生物量关系曲线的影响。虽然亲体补充关系仍多是个假设 ,补充与亲体之间存在的补偿机制需要进一步的研究。
关键词(KeyWords): 渔业的中长期预报;单位补充量产量;单位补充量生物量;亲体补充模型;白色噪音
基金项目(Foundation): 国家自然科学基金面上项目 (30 2 71 0 2 5)资助
作者(Author): 刘群,王艳君,尤凯
DOI: 10.16441/j.cnki.hdxb.2005.03.005
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