木兰溪下游沿岸土壤钴元素高光谱建模研究  

Study on Hyperspectral Modeling of Cobalt in Soil along the Lower Reaches of Mulan Creek

作　　者：季建万 张锐 沙晋明[1] 金彪[1,4] 王振庆 帅晨 林雪 JI Jian-wan;ZHANGRui;SHA Jin-min;JINBiao;WANG Zhen-qing;SHUAI Chen;LIN Xue(School of Geographical Science,Fujian Normal University,Fuzhou 350007,China;Institute of Remote Sensing and Digital Earth,Chinese Academy of Sciences,Beijing 100101,China;University of Chinese Academy of Sciences,Beijing 100049,China;College of Mathematics and Informatics,Fujian Normal University, Fuzhou 350117,China)

机构地区：[1]福建师范大学地理科学学院,福建福州350007 [2]中国科学院遥感与数字地球研究所,北京100101 [3]中国科学院大学,北京100049 [4]福建师范大学数学与信息学院,福建福州350117

出　　处：《福建师范大学学报（自然科学版）》2019年第5期23-32,共10页Journal of Fujian Normal University：Natural Science Edition

基　　金：欧盟框架项目(586037-EPP-1-2017-1-HU-EPPKA2-CBHE-JP;551857-EPP-1-20L5-1-DE-EPPKA2-CBHE-JP);福建省国际合作重点项目(2018I0005)

摘　　要：通过测定野外采集的43个土壤样本的高光谱数据和钴元素含量,并结合光谱处理方法、相关性分析法和模型拟合法,得到最佳估算模型.主要结论如下:土壤钴元素敏感波段分布有480~490、610~620、690~800、960~980、1 070~1 080、1 110~1 160、1 240~1 280、1 340~1 450、1 530~1 540、1 750~1 760、1 890~1 940、2 120~2 240、2 300~2 320 nm;经过Savitzky-Golay平滑滤波后的对数倒数一阶导数、对数倒数二阶导数光谱处理值和波段深度值建模结果较好,并且不同模型拟合结果差异不明显;土壤钴元素最佳高光谱估算模型为y=12.899+2 575.429LRFD920 nm+930.98BD730 nm.Combined spectral processing methods,correlation analysis and model fitting methods,the optimal soil Cobalt element estimated model was acquired by measuring 43 collected soil samples’ hyperspectral data and Cobalt content. The main conclusions were as follows: Soil Cobalt sensitive bands distributed in 480~490,610~620,690~800,960~980,1 070~1 080,1 110~1 160,1 240~1 280,1 340~1 450,1 530~1 540,1 750~1 760,1 890~1 940,2 120~2 240,2 300~2 320 nm.After Savitzky-Golay smoothing filter,the first derivative of logarithmic reciprocal,the second derivative of logarithmic reciprocal and the depth of band can get better results in modeling. The difference of various modeling methods results was not significant.The best hyperspectral estimation model of soil Cobalt element was y=12.899+2575.429 LRFD920 nm+930.98 BD730 nm.

关 键 词：木兰溪下游 土壤 钴元素 高光谱 建模 

分 类 号：O433.4[机械工程—光学工程] X833[理学—光学]