摘要
将遥感技术应用于水质监测能够较好地反映区域水质在空间和时间上的分布情况和变化,尤其适用于大范围水域的快速监测。使用HJ-1A卫星CCD1数据,以滇池为研究区,对滇池悬浮物、叶绿素a两个水质参数的遥感定量反演进行了研究。研究结果表明CCD1数据的2、3、4波段与滇池悬浮物浓度的相关性最好,构建悬浮物浓度反演模型的最佳波段组合为:(b2+b3)/(b2/b3);3、4波段与滇池叶绿素a浓度的相关性最好,构建叶绿素a浓度反演模型的最佳波段组合为:(b4-b3)/(b4+b3)。通过对遴选出来的波段组合进行趋势拟合分析,得到最适合滇池水质参数的反演模型。
Remote sensing monitoring of water quality parameters can better reflect the distribution and changes of regional water quality in space and time, and is particularly suitable for rapid monitoring of a wide range of water region. In this paper, the Dianchi lake are studied based on CCD1 data of HJ-1A satellite. The study of remote sensing quantitative retrieval of two water quality pa- rameters of suspended sediment and chlorophyll a of Dianchi lake shows that the data in 2nd, 3rd and 4th band have the best correla- tion with suspended sediment concentrations, and the best band combination is （b2＋b3）/（b2/b3） for establishing the inversion mod- el of suspended sediment concentrations; the data in the 3rd and 4th band have the best correlation with chlorophyll a concentrations, and the best band combination is （b4 -b3）/（b4＋b3） for establishing the inversion model of chlorophyll a concentrations. Finally, based on Fitting trend analysis, the inversion model of water qua}ity parameters in the Dianchi Lake is built.
出处
《节水灌溉》
北大核心
2015年第3期42-45,共4页
Water Saving Irrigation
基金
国家高科技研究发展计划("863"计划)(2012AA121402)
高等学校博士学科点专项科研基金联合资助课题(20115303110002)
关键词
CCD1
滇池
悬浮物
叶绿素A
CCD1
Dianchi
suspended sediment
chlorophyll a
