Spectroscopy and Spectral Analysis, Volume. 40, Issue 12, 3818(2020)

Determination of Soil Organic Carbon and Total Nitrogen Contents in Aggregate Fractions From Fourier Transform Infrared Spectroscopy

Cui-ying LIU1,1、*, Jin-rui ZHANG1,1, Tao ZENG1,1, and Jian-ling FAN1,1
Author Affiliations
  • 1[in Chinese]
  • 11. Jiangsu Key Laboratory of Agricultural Meteorology, College of Applied Meteorology, Nanjing University of Information Science and Technology, Nanjing 210044, China
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    Figures & Tables(8)
    FTIR spectra of soil aggregates after Savitzky-Golay smoothing (a) and first order differential retreatments (b)
    Relations between the mean SD, maximum SD and wavelength interval
    Histrogam of charasteristic wavelengths of SOC and TN in soil aggregates
    Comparison of predicted SOC and measured SOC in soil aggregates by different models
    Comparison of predicted TN and measured TN in soil aggregates by different models
    Comparison of predicted TN and measured TN in soil aggregates by different models
    • Table 1. Statistic summary of the modeling and validating data subsets

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      Table 1. Statistic summary of the modeling and validating data subsets

      样本数SOCTN
      均值标准差最小值最大值均值标准差最小值最大值
      建模集701.9381.2780.6397.4920.1770.0930.0510.537
      验证集261.6660.5740.8772.6680.1770.0750.0780.334
    • Table 2. Comprison of SOC and TN predicting results by different models

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      Table 2. Comprison of SOC and TN predicting results by different models

      建模样本验证样本PRD
      R2RMSER2RMSE
      SOCPLSR0.9110.3790.8270.3001.88
      SVM0.8310.6740.6100.3541.59
      ANN0.9990.0250.8500.2272.48
      RF0.6810.7820.5460.4131.36
      TNPLSR0.8520.0360.7780.0401.84
      SVM0.8620.0400.6700.0461.60
      ANN0.9990.0290.7810.0362.05
      RF0.6500.5570.6810.0461.60
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    Cui-ying LIU, Jin-rui ZHANG, Tao ZENG, Jian-ling FAN. Determination of Soil Organic Carbon and Total Nitrogen Contents in Aggregate Fractions From Fourier Transform Infrared Spectroscopy[J]. Spectroscopy and Spectral Analysis, 2020, 40(12): 3818

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    Paper Information

    Category: Research Articles

    Received: Jun. 14, 2020

    Accepted: --

    Published Online: Jun. 18, 2021

    The Author Email: Cui-ying LIU (002263@nuist.edu.cn)

    DOI:10.3964/j.issn.1000-0593(2020)12-3818-07

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