摘要
基于遥感影像分析了2011年7月28—31日强降雨前后渤海湾南堡、天津港近岸海域叶绿素a的变化规律。利用渤海湾10个监测站点采集的叶绿素a浓度值和对应的遥感影像反射值建立了"叶绿素-反射率"回归关系,相关系数为R^2=0.749。结果表明,南堡区、天津港区强降雨前后叶绿素a浓度均值呈现先增大后减小的变化趋势。该方法可迅速、准确地反演出渤海湾叶绿素a浓度,为分析渤海湾水质状况提供支持。
The purpose of this study is to assess rainstorm impact on chlorophyll-a （Chba） concentration in Bohai Bay by MODIS~ 250 m remote sensing. Chlorophyll-a concentration collected from 10 points in Bohai Bay and the corresponding reflectance values were used to establish a regression model, which demonstrates a high correlation coefficient, R2 =0. 749. Results show that the mean of chlorophyll a concentration had a similar variation trend impacting by heavy rainfall in Nanpu and Tianjin Harbor. It presented an increase of chlorophylba mean concentration first, and then it came down. This method can predict chlorophylba concentration by back calculation quickly and accurately, and can be a good support for assessment of water quality in Bohai Bay.
出处
《中国科技论文》
CAS
北大核心
2015年第21期2534-2538,2549,共6页
China Sciencepaper
基金
高等学校博士学科点专项科研基金资助项目(20120181120123)
