厦门大学海洋与地球学院

College of Ocean and Earth Sciences
教师后台登录
学院办公系统
研究生座位申请
实验教学中心
学院校友网
教室查看/预约
学院简介/年报
科考船简报
海洋科技博物馆
Luncheon Seminar #122:解剖海洋初级生产力 The anatomy of marine primary production
2018/11/1 101 返回上页
2018-11-5 (星期一) 11:40am-1:00pm Seminar starts at 12:00pm
谢聿原,杰出博士后 Yuyuan Xie
周隆泉楼A3-206 A3-206 Zhou Long Quan Building

【来访单位 Institution】:厦门大学近海海洋环境科学国家重点实验室,中国    

【邀请人 Host】:胡建宇  Jianyu Hu      【联络人 Contact】:黄迎   Ying Huang 2181571

报告摘要

初级生产力PP又称基础生产力,众所周知非常重要,由初级生产者(主要是浮游植物)所贡献,是海洋生态系统能量和物质的来源,是食物链的基础。上世纪50年代发明了14C示踪法测量PP,此后这个方法为海洋科学研究贡献巨大,使人类认识到海洋生产了地球上一半的有机碳,但所遭受的质疑也是从未间断过,“14C-PP值能不能代表真实的PP?”是每个人都想问的问题。14C方法被诸多质疑,可谓“毁誉参半”。其中关键的点是光合作用不是一个简单的过程,而是一系列反应的集成,不同条件或不同方法测量的常常是不同位点上的速率,我们可以将它们定义为不同的“通货”,且“通货”之间存在着“汇率”。因此我们需要“解剖”PP,研究PP的“解剖学”。对于水柱积分PP而言,也需要进行另一个层面上的“解剖”,才能更好地认识海洋初级生产的时空分布。

Abstract

Phytoplankton contributes most of the primary production (PP) in the sea, which is the foundation of marine ecosystems. The method of using 14C as a tracer to measure the PP has played a critical role in the progress of marine research ever since the method was invented in the 1950s. The seamark achievement is that the ocean has been discovered to produce half of the organic carbon in the earth. But the 14C method is as much blamed as praised. The top criticism is the question “Is the measured 14C-PP the true PP?” almost everyone in the community would ask. The key of the answer to this question is that photosynthesis is a chain of reactions, not only one simple reaction the chemical equation appears. The measured rates are of different reaction sites depending on the environments and the choice of methodology. We may name them as different “currencies” and use the “exchange rate” to link them together. That is what “anatomy of marine primary production” going to address. I’m going to disassemble the phytoplankton photosynthesis. In addition, the depth-integrated PP needs to be disassembled as well, though the analysis is different.

个人简介

谢聿原的科研生涯从尝试研究藻类二氧化碳浓缩机制CCM开始,研究生期间主要在CHOICE-C航次中用14C做为tracer测量和研究海洋初级生产力PP,博后期间开始学习一些海色遥感知识,尝试进入新的研究方向。作为一个海洋人,希望自己在未来的道路上能做到两点:(1)了解海洋,分享知识;接下来工作将以光和碳的耦合为主线,结合藻类形态、荧光、海色遥感等要素探讨浮游植物固碳的奥秘。(2)助力保护蓝色海洋的事业;期望能优化生物量和生产力的观测手段,可以更好地监控海洋环境的质量,保护海洋资源。