| 土壤砷含量高光谱估算模型研究 |
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| 作者姓名： | Zheng GH Zhou SL Wu SH |
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| 作者单位： | 1. 南京大学地理与海洋科学学院,江苏南京,210093;南京信息工程大学遥感学院,江苏南京,210044
2. 南京大学地理与海洋科学学院,江苏南京,210093 |
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| 基金项目： | 国家重点基础研究发展规划(973)项目(2002CB410810); 江苏农用地质量动态监测研究项目(2004LY001)资助 |
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| 摘 要： | 以实验室内测取的土壤反射光谱为研究对象,利用PLSR方法建立反射光谱与土壤As含量之间的模型,通过交叉验证、估算检验建模精度,探讨利用反射光谱估算士壤As含量的可行性.通过比较不同光谱预处理方法、不同光谱分辨率和不同OM含量条件下建模、验证和估算结果.表明,MSC方法可以有效去除散射的影响而取得较好的结果(估算R2=0...
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| 关 键 词： | 反射光谱 砷 土壤污染 PLSR |
Prediction of As in soil with reflectance spectroscopy |
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| Zheng GH,Zhou SL,Wu SH.Prediction of As in soil with reflectance spectroscopy[J].Spectroscopy and Spectral Analysis,2011,31(1):173-176. |
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| Authors: | Zheng Guang-Hui Zhou Sheng-Lu Wu Shao-Hua |
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| Institution: | ZHENG Guang-hui1,2,ZHOU Sheng-lu1*,WU Shao-hua1 1.School of Geographic and Oceanic Sciences,Nanjing University,Nanjing 210093,China 2.School of Remote Sensing,Nanjing University of Information Science & Technology,Nanjing 210044,China |
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| Abstract: | In the present study,visible-near infrared reflectance spectroscopy(VNIR) measured in laboratory was evaluated for prediction of the content of As in soils.Calibrations between As and reflectance were developed using cross-validation under partial least squares regression(PLSR).Prediction accuracy was tested via separate validation samples.The reflectance was pre-processed by several techniques like smoothing,multiplicative scatter correction(MSC),Log(1/R),first/second derivative(F/SD) and continuum removal... |
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| Keywords: | Reflectance spectroscopy As Soil contamination PLSR |
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