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温度是影响藻类生长繁殖的一个重要因素。本文针对2013年6月在黄海海域出现的大量浒苔和马尾藻事件,基于MODIS(Moderate-Resolution Imaging Spectroradiometer)卫星遥感数据,分析了此次事件中浒苔和马尾藻生消过程与海表面温度之间的关系。首先根据浒苔、马尾藻和水体的光谱特征曲线,本文利用大型浮游藻类指数(Macroalgae Index,MI)对浒苔和马尾藻进行了识别,并且对浒苔和马尾藻生消过程中的MI值和对应的海表面温度进行了分析,结果表明:在此次事件中,海水温度是影响浒苔和马尾藻生长繁殖的重要环境因子,浒苔和马尾藻处的海表面温度比周围水体的海表面温度高1~2℃,浒苔和马尾藻爆发的适宜温度范围为23~26℃。
Temperature is an important factor affecting the growth and reproduction of algae. In this paper, based on the MODIS (Moderate-Resolution Imaging Spectroradiometer) satellite remote sensing data of a large number of Enteromorpha and Sargassum occurring in the Yellow Sea in June 2013, the relationship between the extinction process of Enteromorpha and Sargassum and the sea surface temperature The relationship between. First of all, based on the spectral characteristics of Enteromorpha, Sargassum and water bodies, the paper used the Macroalgae Index (MI) to identify Enteromorpha and Sargassum, and the value of MI for Enteromorpha and Sargassum And the corresponding sea surface temperature were analyzed. The results showed that: in this incident, the seawater temperature is an important environmental factor that affects the growth and reproduction of Enteromorpha and Sargassum, the sea surface temperature of Enteromorpha and Sargassum is higher than that of the surrounding water The surface temperature is 1 ~ 2 ℃, the suitable temperature range of Enteromorpha and Sargassum eruption is 23 ~ 26 ℃.