| 应用近红外漫反射光谱快速测定土壤锌含量 |
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| 引用本文： | 黄富荣,潘涛,张甘霖,潘贤章,刘登飞.应用近红外漫反射光谱快速测定土壤锌含量[J].光学精密工程,2010,18(3):586-592. |
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| 作者姓名： | 黄富荣 潘涛 张甘霖 潘贤章 刘登飞 |
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| 作者单位： | 1. 暨南大学,"重大工程灾害与控制"教育部重点实验室,广东,广州,510632;暨南大学,光电工程系,广东,广州,510632
2. 中国科学院,南京土壤研究所,土壤与农业可持续发展国家重点实验室,江苏,南京,210008 |
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| 基金项目： | 国家自然科学基金资助项目(No.10771087);;广东省自然科学基金资助项目(No.7005948);;广东省科技计划资助项目(No.2007A020905001,2007B030501008,2007B020714001);;广州市科技攻关项目(No.2007Z3-E0281) |
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| 摘 要： | 采用近红外漫反射光谱和偏最小二乘法(PLS)建立了土壤锌快速分析的定量模型,并进行了波段优选。首先,基于单波长模型预测效果将全体样品划分为定标集和预测集;然后,采用多元散射校正(MSC)和Savitzky-Golay(SG)平滑方法对光谱进行预处理。选取全谱400~2500nm,400~1100nm,1100~1900nm,1900~2500nm,580~900nm等5个波段,每个波段分别采用原谱、一阶导数谱、二阶导数谱,共建立了15个定标模型。同时调整SG平滑点数和PLS因子数,每个模型分别进行PLS数值实验,按照预测效果进行优选。结果显示,采用1900~2500nm波段一阶导数谱的模型效果最好,预测相关系数(RP)、RMSEP、RRMSEP分别为0.806,31.0mg/kg和19.96%。这些结果表明,1900~2500nm波段可以代替全谱波段得到更好的预测效果,可为设计专用土壤近红外光谱仪提供依据。
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| 关 键 词： | 土壤 锌 近红外漫反射光谱 偏最小二乘法 波段选择 |
| 收稿时间： | 2009-06-22 |
| 修稿时间： | 2009-09-04 |
Near-Infrared Diffuse Reflectance Spectroscopy and Partial Least Square Method was Applied to Rapid Analysis of Soil Zinc Content |
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| HUANG Fu-rong,PAN Tao,ZHANG Gan-lin,PAN Xian-zhang,LIU Deng-fei.Near-Infrared Diffuse Reflectance Spectroscopy and Partial Least Square Method was Applied to Rapid Analysis of Soil Zinc Content[J].Optics and Precision Engineering,2010,18(3):586-592. |
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| Authors: | HUANG Fu-rong PAN Tao ZHANG Gan-lin PAN Xian-zhang LIU Deng-fei |
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| Affiliation: | 1.Key Laboratory of Disaster Forecast and Control in Engineering;Ministry of Education;Jinan University;Guangzhou 510632;China;2. Department of Optoelectronic Engineering;3.State Key Laboratory of Soil and Sustainable Agriculture;Nanjing Institute of Soil Science;Chinese Academy of Sciences;Nanjing 210008;China |
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| Abstract: | The quantification model of zinc rapid analysis in the soils was established by using near-infrared diffuse reflectance spectroscopy and a Partial Least Square (PLS) method, and the optimal measured wave band was also selected. All the samples were divided into calibration set and prediction set based on the prediction effect of single wavelength model, and then the spectra were pretreated by Multiplicative Scatter Correction (MSC) and Savitzky-Golay (SG) smoothing methods. The following five wave bands, th... |
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| Keywords: | soil Zn near-infrared diffuse reflectance spectroscopy partial least square method wave band choice |
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