基于MODIS卫星遥感数据的西北太平洋初级生产力与环境参数的相关性  

The Correlation between Net Primary Productivity and Environmental Parameters of Northwest Pacific Based on MODIS Satellite Remote Sensing Data

作　　者：李璇 陈文忠[1] LI Xuan;CHEN Wenzhong(Department of Marine Technology,College of Information Science and Engineering,Ocean University of China,Qingdao 266100,China)

机构地区：[1]中国海洋大学信息科学与工程学院海洋技术系,青岛266100

出　　处：《海洋开发与管理》2020年第4期32-41,共10页Ocean Development and Management

基　　金：国家自然科学基金项目(41375142).

摘　　要：为掌握西北太平洋初级生产力的变化规律,科学预防赤潮灾害频发和海洋环境污染,保障海洋渔业等产业的发展,文章利用2007—2018年的MODIS卫星遥感数据,分别分析西北太平洋2个典型区域的叶绿素浓度、光合有效辐射、海表温度和净初级生产力的时空变化特征及其相关性,通过相关性对比分析不同区域净初级生产力的主要影响因素及其差异性,并根据异常气候条件(“厄尔尼诺”现象)年份的情况验证上述相关性结论。研究结果表明:区域A位于中高纬度的亲潮和黑潮寒暖流交界处,区域B受副热带环流和黑潮共同作用且台风较活跃,由于二者营养盐水平不同,净初级生产力的主要影响因素具有差异性;由于酶的活性受海表温度影响较大,营养盐浓度较高海域(区域A)的净初级生产力主要考虑海表温度的影响;营养盐浓度较低海域(区域B)的净初级生产力受叶绿素浓度和海表温度影响较大,其中与海表温度相关性较高的原因主要是叶绿素浓度(浮游植物生物量)受海表温度影响较大;2个区域的净初级生产力受光合有效辐射影响较小;异常气候条件年份(2015年)中,2个区域净初级生产力和相关环境参数的变化特征可验证上述相关性结论。In order to grasp the changes of primary productivity in the Northwest Pacific,scientific prevention of frequent red tide disasters and pollution of the ocean environment,and safeguard the development of industries such as ocean fisheries.This paper used MODIS satellite remote sensing data(2007—2018)to analyze the spatiotemporal characteristics and correlations of chlorophyll concentration,photosynthetically active radiation,sea surface temperature and net primary productivity in two typical regions of the Northwest Pacific.Through the correlation comparison,the main influencing factors and differences of net primary productivity in different areas were analyzed,and the above correlation conclusions based on the years of abnormal climate(“El Nino”phenomenon)were verified.The research results showed that:Area A was located at the junction of pro-tide and Kuroshio cold and warm currents at mid-high latitudes.Area B was affected by subtropical circulation and Kuroshio,and typhoons were active.Due to the different nutrient levels,the main factors affecting net primary productivity were different.Because enzyme activity is greatly affected by sea surface temperature,the net primary productivity in areas with high nutrient concentrations(area A)is mainly affected by sea surface temperature.Net primary productivity in areas with low nutrient concentrations(area B)is mainly affected by chlorophyll concentration and sea surface temperature,and the higher correlation with sea surface temperature is mainly due to the chlorophyll concentration(phytoplankton biomass)being greatly affected by sea surface temperature.The net primary productivity of the two areas was less affected by photosynthetically active radiation.In the year of abnormal climate(2015),the change characteristics of the net primary productivity and related environmental parameters of the two areas could verify the above-mentioned correlation conclusions.

关 键 词：净初级生产力 叶绿素浓度 海表温度 光合有效辐射 西北太平洋 

分 类 号：P76[天文地球—海洋科学] P722