基于卫星遥感的南海真光层底颗粒有机碳输出通量时空特征研究  

Study on spatial-temporal characteristics of particulate organic carbon export flux at the bottom of euphotic zone in the South China Sea based on remote sensing

作　　者：刘少军[1,2] 蔡大鑫[1,2] 韩静 罗琪 赵婷 张廷龙 LIU Shaojun;CAI Daxin;HAN Jing;LUO Qi;ZHAO Ting;ZHANG Tinglong(Key Laboratory of South China Sea Meteorological Disaster Prevention and Mitigation of Hainan Province, Haikou 570203, China;Hainan Institute of Meteorological Sciences, Haikou 570203, China)

机构地区：[1]海南省南海气象防灾减灾重点实验室,海南海口570203 [2]海南省气象科学研究所,海南海口570203

出　　处：《海洋气象学报》2022年第1期32-38,共7页Journal of Marine Meteorology

基　　金：海南省重点研发计划项目(ZDYF2021SHFZ062);海南省自然科学基金项目(421QN373,421MS0811)。

摘　　要：在加强海洋强国建设、实现我国碳达峰和碳中和愿景目标背景下准确掌握南海碳通量时空变化格局具有重要的现实意义。根据2009—2018年10 a有机碳通量月度数据集,分析了南海真光层底颗粒有机碳通量变化特征。结果表明:(1)南海区域多年真光层底有机碳输出通量年平均值为55.40 mgC·m^(-2)·d^(-1);其值大小在空间上的分布存在近岸>陆架>海盆的趋势。(2)从季节上看,南海真光层底颗粒有机碳输出通量冬季最高,春、秋季次之,夏季最小;真光层底颗粒有机碳输出通量1、4、7、10月平均值分别为82.43、47.37、46.34、54.75 mgC·m^(-2)·d^(-1)。研究结果可为全面掌握南海碳循环过程和机制提供技术支撑。It is of great significance to accurately learn the spatial and temporal variation pattern of the carbon flux in the South China Sea,especially under the background of the construction of strong maritime country and China's carbon peak and carbon neutralization strategy.The characteristics of the particulate organic carbon(POC)flux at the bottom of the euphotic zone in the South China Sea are analyzed based on the monthly data set of the organic carbon flux from 2009 to 2018.The results are shown as follows.(1)The annual mean POC export flux in the South China Sea is 55.40 mgC·m-2·d-1;the value of POC export flux in the South China Sea is high in the nearshore zone,medium in the continental shelf,and low in the sea basin.(2)The value of POC export flux at the bottom of the euphotic zone in the South China Sea is the highest in winter,followed by spring and autumn,and the lowest in summer;the mean values of POC export flux in January,April,July,and October are 82.43,47.37,46.34,and 54.75 mgC·m^(-2)·d^(-1),respectively.The results can provide technical support for comprehensively understanding the process and mechanism of the carbon cycle in the South China Sea.

关 键 词：真光层 颗粒有机碳 通量 遥感 南海 

分 类 号：P715.7[天文地球—海洋科学] P732