摘要
针对水库富营养化给供水安全带来的严重威胁,利用2008~2017年Landsat时间序列卫星数据,基于归一化差值植被指数(NDVI)与实测水质参数的相关分析结果,运用阈值法动态提取了于桥水库的水华分布范围和程度。通过与自然和人为因子的协同分析,认为气温、降水和人类活动等共同驱动引发了水华爆发,其中人为干预的生态修复工程可抑制或减缓水华爆发,并有效改善水质状况。时间分辨率更高的气象因子数据和卫星遥感数据将更有助于对中小型饮用水水面蓝藻水华驱动力的分析,推动准实时遥感监测预警技术应用。
Reservoir eutrophication leads serious threat to water supply safety. This paper apples Landsat time series satellite data from 2008 to 2017 to extract the distribution and degree of water bloom in Yuqiao Reservoir based on a threshold method to the correlation analysis results between Normalized Difference Vegetation Index(NDVI)and measured water quality parameters. Through the collaborative analysis of both natural and artificial factors,the water bloom was jointly drive by temperature,precipitation,and human activities. Among them,the ecological restoration project with human intervention could inhibit or slow down the blooms and effectively improve the water quality. Meteorological and spaceborne remote sensing data with higher temporal resolution will be more conducive the analyze the driver force of cyanobacteria blooms on small and medium-sized drinking water surfaces. Meanwhile,remote sensing data based monitoring and early warning technology could be promoted.
作者
岳昂
曾庆伟
王怀警
Yue Ang;Zeng Qingwei;Wang Huaijing(Tianjin Eco-Environmental Monitoring Center,Tianjin 300191,China;Twenty First Century Aerospace Technology Co.,Ltd,Beijing 100096,China;Key Laboratory of Virtual Geographical Environment of Ministry of Education,College of Geographical Science,Nanjing Normal University,Nanjing 210023,China)
出处
《遥感技术与应用》
CSCD
北大核心
2020年第3期694-701,共8页
Remote Sensing Technology and Application
基金
天津市科技计划项目“天津水源地水土环境状况及污染风险时空分异与预警”(16YFXTSF00380)。
