滤食性贝类的碳收支及其在养殖生态系统碳循环中的作用

项目名称： 滤食性贝类的碳收支及其在养殖生态系统碳循环中的作用

项目编号： No.41276172

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 天文学、地球科学

项目作者： 张继红

作者单位： 中国水产科学研究院黄海水产研究所

项目金额： 90万元

中文摘要： 针对基于海水贝藻养殖固碳提出的"碳汇渔业"的过程与机制方面的基础研究不足的问题，本课题主要聚焦在主要养殖贝类（栉孔扇贝、长牡蛎）碳收支数值模型及生物沉积过程的研究。以典型筏式养殖区桑沟湾是实验海区，量化贝类生长代谢过程的碳分配及其与内在需求及环境因子的关系，构建个体碳收支数值模型，揭示及预测食物可获得性及水温等环境因子对贝类个体碳收支的影响；了解贝类生物沉积的关键过程，阐明滤食性贝类在养殖海域碳循环中的作用机理，从生理生态学和生物地球化学循环的双重角度加强海洋生物碳汇功能与增汇途径的基础研究，为全面认识贝类养殖对海洋碳循环的贡献，科学把握近海养殖区碳循环过程与机理提供科学依据。

中文关键词： 滤食性贝类；碳收支；数值模型；生物沉积；桑沟湾

英文摘要： Increasing ocean carbon sink depends on understand the process and mechanism of oceanic carbon cycle "Carbon sinking fisheries" was proposed based on the carbon fixed by bivalves. However, there still lack of insufficient research on the basis of the procedures and mechanisms. This project will mainly focused on the research of carbon budget numerical model and key process of bio-deposits in biogeochemical cycle of the main culture species of bivalves (scallop Chlamys farreri and Oyster Crassostrea gigas). The project will be implemented in Sungo Bay, the typical suspended longline culture area. To quantify the carbon distribution in the physiological process, including respiratory, tissue growth, bio-deposits production, shell growth and spawning. To understand it's relationship with inner needs and environmental factors. And then, to simulate bivalves' growth and forecast the influence of water temperature and food availability on individual carbon budget, by numerical model. To study on the key biogeochemical cycles of bio-deposits, which including bio-deposits sinking rate, settlement rate, deposition rate and burial rate in the sediment, in order to understanding of shellfish aquaculture's contribution to the carbon cycle in the marine ecosystem and provide the scientific basis for understand the carbon cyc

英文关键词： filter-feeding bivalves；carbon budget；numberial model；biodeposit；Sungo Bay