增殖放流是恢复和保护海洋渔业资源的重要手段之一。放流物种通过捕食和被捕食行为，不可避免的会与其它种类产生交互作用，从而对整个海域的食物网结构产生影响。然而长久以来，人们对增殖放流效果的评价多集中在增殖群体的恢复程度以及物种回捕率上，忽视了放流种类对食物网的影响。因此，本项目拟以浙江南部近海为例，选定增殖种类海蜇 Rhopilema esculenta、黄姑鱼Nibea albiflora和黑鲷Sparus macrocephalus，通过分析和比较浙江近海食物网结构及特征，确定增殖种类在该海域的主要捕食者和饵料生物，量化增殖放流对食物网的影响；通过生态系统模拟，评估不同增殖管理策略的潜在生态效应。本项目有助于为浙江南部近海开展生态系统渔业管理提供基础资料，有助于深入了解增殖放流活动对食物网的影响机制，完善我国增殖放流评价体系，有助于科学的管理增殖放流活动，促进海洋开发的高质量发展。

Stock enhancement is one of the most popular management tools in fisheries. Enhancement activities not only increase the biomass and catch of target species but also impact other species even the food webs through complexity trophic interactions. However, most evaluations of enhancement activities are focus on re-catch rate and the recovery of target species, and knowledge of the impact of enhancement activities on food webs and ecosystems are limit. Therefore, this study uses the southern Zhejiang coastal area as an example, to analysis the food web structure and its response mechanisms for stock enhancement. Common enhancement species such as Rhopilema esculenta, Nibea albiflora, and Sparus microcephalus were chosen in this study. By analysis the structure and characters of southern Zhejiang coastal area food web, main predators and prey items of those species will be identified and the impact of enhancement activities on food web will be quantified. Besides, the potential ecosystem impact of different enhancement strategies will be evaluated by ecosystem simulation. This study will help to provide basic information for ecosystem-based fisheries management in southern Zhejiang coastal area, improve our understanding on the response mechanisms of enhancement activities on food webs. The implement of this study will help to improve the evaluation system and management for stock enhancement, and high-quality development for ocean exploitation.