基于遥感资料的北黄海叶绿素a浓度时空演变特征分析  

Spatio-temporal evolution characteristics of chlorophyll a concentration in the Northern Yellow Sea based on remote sensing data

作　　者：郭晓芳 宋军 郭俊如 富砚昭 王喜风 王国松[3] 王林慧[1,2] 白志鹏 GUO Xiaofang;SONG Jun;GUO Junru;FU Yanzhao;WANG Xifeng;WANG Guosong;WANG Linhui;Bai Zhipeng(College of Ocean Technique and Environment,Dalian Ocean University,Dalian 116023,China;Operational Oceanographic Institution,Dalian Ocean University,Dalian 116023,China;Key Laboratory of Marine Environmental Information Technology,National Marine Data and Information Service,Tianjin 300171,China;Army 61741 of PLA,Beijing 100094,China)

机构地区：[1]大连海洋大学海洋科技与环境学院,辽宁大连116023 [2]大连海洋大学应用海洋学研究所,辽宁大连116023 [3]国家海洋信息中心自然资源部海洋环境信息保障技术重点实验室,天津300171 [4]61741部队,北京100094

出　　处：《海洋通报》2020年第6期705-716,共12页Marine Science Bulletin

基　　金：自然资源部海洋环境信息保障技术重点实验室开放基金;自然资源部海洋信息技术创新中心开放基金;大连海洋大学“湛蓝学者工程”;国家自然科学基金(41206013,41430963);空间海洋遥感与应用研究重点实验室开放基金重点课题(201601003);国家科技支撑计划项目(2014BAB12B02);国家建设高水平大学公派研究生项目(留金出〔2008〕3019,〔2012〕2013);辽宁省高等学校海洋产业技术研究院项目;海洋公益性行业科研专项(201205018)。

摘　　要：海表叶绿素a(Chl-a)的分布具有明显的空间区域性以及动态发展特征,分析叶绿素a浓度的长期变化趋势对了解海洋初级生产力发展、生态监测具有重要意义。北黄海渔业资源丰富,是我国重要的渔场,为调查海域整体生态系统稳定性,本文利用Hermes提供的多源卫星融合数据,从遥感视野,运用Mann-Kendall趋势检验方法,在全局尺度分析1998—2019年北黄海叶绿素a浓度的年际、季节变化特征及其演变规律,分析了其动态变化特征与环境要素的相关性。研究发现,北黄海叶绿素a空间分布区域性强,具有明显的季节变化。近海海域浓度高于深海海域,辽东半岛大洋河口具有一高值中心,这与陆源输入有关。除西朝鲜湾附近海域呈微弱的上升趋势外,其他海域均呈现下降趋势,近岸海域下降趋势显著,这意味着西朝鲜湾附近海域浮游植物可能有更强的生长潜力。北黄海Chl-a浓度变化影响因素复杂且区域性强,Chl-a浓度与环境因素仅部分月份存在较强的相关关系,季节上不同因素存在相对主导的相关性。相关环境因素在一定程度上均会对Chl-a的分布和变化产生影响,时间上,9月PAR与Chl-a有相对较强的负相关关系。空间上,光合有效辐射相较海表温度、海表风速对Chl-a浓度影响较大。冬季,辽东半岛南部海域与SSW呈相对较强的正相关;夏季在海域西部则与SST呈相对较强的负相关。沿岸径流输入的减少可能是近岸Chl-a呈下降趋势的原因。The distribution of chlorophyll a in the sea surface has obvious spatial variation and dynamic development characteristics.Analyzing the long-term variation trend of chlorophyll a concentration is of great significance for understanding the development of marine primary productivity and ecological monitoring.Northern Yellow Sea is China's important fishing grounds with rich fishery resources.To investigate the overall ecosystem stability,this paper uses the multi-source satellite fusion data provided by Hermes and the Mann Kendall trend test method to analyze the characteristics of interannual and seasonal changes and evolution of the Chl-a concentration in the Northern Yellow Sea in 1998-2019.The correlation of their dynamic changes with related environmental factors are analyzed.It was found that the spatial distribution of chlorophyll a in the Northern Yellow Sea is regional and had significant seasonal changes.The concentration of coastal waters is higher than that of deep-sea waters,and the oceanic estuary of the Liaodong Peninsula has a high value center,which is related to land source input.Except for the weak upward trend in the waters around the West Korea Bay,all the other waters showed a downward trend,especially significant in the coastal waters,suggesting the stronger growth potential of phytoplankton in the waters around the West Korea Bay.The influencing factors of Chl-a concentration in the Northern Yellow Sea are complex and regional strong.Chl-a concentration is strongly correlated with environmental factors only in some months,and different factors have relatively dominant correlation in different season.Related environmental factors will affect the distribution and change of Chl-a to some extent.In terms of time,PAR and Chl-a had a relatively strong negative correlation in September.In terms of space,photosynthetic effective radiation has a greater impact on Chl-a concentration than SST and SSW.In winter,the southern waters of Liaodong Peninsula have a relatively strong positive correlation wi

关 键 词：北黄海 叶绿素A MANN-KENDALL 环境因子 

分 类 号：P735[天文地球—海洋生物学] Q178[天文地球—海洋科学]