| 基于增殖放流的定栖性种类剩余产量模型及其模拟分析 |
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| 引用本文： | 王迎宾.基于增殖放流的定栖性种类剩余产量模型及其模拟分析[J].海洋学报,2021,43(2):28-37. |
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| 作者姓名： | 王迎宾 |
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| 作者单位： | 浙江海洋大学 水产学院，浙江 舟山 316022 |
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| 基金项目： | 国家重点研发计划“蓝色粮仓科技创新”重点专项(2019YFD0901304);浙江省基础公益计划项目(LGN21C190009)。 |
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| 摘 要： | 为应对渔业资源的日益衰退，增殖放流成为了目前补充资源、维持资源可持续利用的主要手段之一。增殖放流实施后，渔业资源的可持续特征是学者们普遍关心，却又无法使用传统剩余产量模型有效解决的问题。本研究基于传统的Schaefer剩余产量模型，提出了一个适用于增殖放流情况下的剩余产量模型(增殖剩余产量模型)，模拟分析了不同增殖放流和捕捞策略对模型的影响。该模型的形式与Schaefer剩余产量模型相似，但加入了描述增殖群体增长特征的参数—有效增殖率，以此来表示增殖放流的群体对产量产生的影响。结果显示，合理的增殖放流可以起到增加最大可持续产量的效果，使用增殖剩余产量模型能够得到合理的最大可持续产量等关键指标的估算结果。与无增殖放流情况相比，在增殖放流影响下，海域原存资源(海域原本存在的群体)达到最大可持续产量时所需的生物量较小，而可承受的捕捞努力量则有所增加。增殖剩余产量模型所反映的原存群体和增殖群体之间会产生抑制作用。在该作用影响下，不同增殖放流和捕捞策略会对模型的评估结果产生影响。与传统模型相比，该模型将增殖放流纳入最大可持续产量的评估过程，提高了增殖放流影响下最大可持续产量评估的准确性，可用于诸如海洋牧场等边界较清晰的海域内增殖定栖性种类最大可持续产量的估算。
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| 关 键 词： | 增殖放流 剩余产量 最大可持续产量 有效增殖率 |
| 收稿时间： | 2020-04-08 |
Surplus production model of settled species based on stock enhancement and its simulation analyses |
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| Wang Yingbin.Surplus production model of settled species based on stock enhancement and its simulation analyses[J].Acta Oceanologica Sinica (in Chinese),2021,43(2):28-37. |
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| Authors: | Wang Yingbin |
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| Institution: | School of Fisheries, Zhejiang Ocean University, Zhoushan 316022, China |
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| Abstract: | In order to cope with the declining fishery resources,stock enhancement has become one of the main methods of restocking and maintaining the sustainable use of resources.After the implementation of enhancement,the sustainable characteristics of fishery resources are a problem that scholars generally care about,but can not be effectively solved by using traditional surplus production models.Based on the traditional Schaefer surplus yield model,this study proposed a surplus production model(enhancement surplus production model)suitable for the case of stock enhancement,and simulated and analyzed the effects of different enhancement and fishing strategies on the model.The form of this model is similar to the Schaefer surplus production model,but it adds a parameter describing the growth characteristics of the enhancement stock-the effective enhancement rate(e)to express the impact of the stock enhancement on the yield.The results show that reasonable enhancement quantity can increase the maximum sustainable yield(MSY),and the use of the enhancement surplus production model can obtain reasonable estimates of MSY and other key indicators.Compared with the non-enhancement situation,under the influence of stock enhancement,the biomass required to reach MSY(BMSY)is small,while the maximum sustainable fishing effort(EMSY)increased.Inhibition occurs between the existing stock(the stock that originally existed in the sea area)and the enhancement stock reflected in the enhancement surplus production model.Under the influence of this effect,different enhancement and fishing strategies will affect the assessment results of the model.Compared with the traditional model,this model assesses the MSY under the effect of stock enhancement,and improves the accuracy of the results,which can be used to estimate the MSY of enhancement species in well-defined sea areas such as marine ranching. |
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| Keywords: | stock enhancement surplus production maximum sustainable yield effective enhancement rate |
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