基于遥感技术的太湖蓝藻水华时空变化分析  

Analysis of Spatial and Temporal Changes of Cyanobacteria Bloom in Taihu Lake Based on Remote Sensing Technology

作　　者：徐寅生[1] 赵琳[1] XU Yinsheng;ZHAO Lin(China Water Resources Beifang Investigation,Design and Research CO.LTD.,Tianjin 300222,China)

机构地区：[1]中水北方勘测设计研究有限责任公司,天津300222

出　　处：《河南水利与南水北调》2023年第6期5-6,共2页Henan Water Resources & South-to-North Water Diversion

摘　　要：利用卫星遥感手段监测水环境具有大范围、长时序、周期性、快速、动态监测等优势,文章利用哨兵2号多光谱卫星遥感数据,对2017-2021年五年内的太湖蓝藻情况进行监测,提取湖区不同季节蓝藻水华信息,进而分析不同季节湖区水质的变化特征。实验结果表明,近五年来,太湖蓝藻爆发时段主要集中在每年的5月份左右,蓝藻爆发区域主要集中在太湖西北部的竺山湖、西部沿岸区、梅梁湖等湖湾;湖心区蓝藻数量呈明显增长,需要引起关注。Monitoring water environment by means of satellite remote sensing has the advantages of large-scale,long-time sequence,periodicity,fast and dynamic monitoring.This article utilizes Sentinel-2 multispectral satellte remote sensing data to monitor the blue-green algae situation in Taihu Lake from 2017 to 2021.It extracts information on blue-green algal blooms in different seasons of the lake and analyzes the characteristics of water quality changes in different seasons.The results show that the blue-green algae outbreak in Taihu Lake has been mainly concentrated in May of each year for the past five years,and the algal blooms were mainly concentrated in Zhushan Lake,western coastal areas and Meiliang Lake in northwestern Tai Lake.The number of blue-green algae in the central lake area has shown a significant increase,which deserves attention.

关 键 词：多光谱 水质 太湖 叶绿素A 哨兵2号 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]