Spectroscopy and Spectral Analysis, Volume. 37, Issue 2, 584(2017)
Measurement of Soil Organic Matter with Near Infrared Spectroscopy Combined with Genetic Algorithm and Successive Projection Algorithm
Visible near infrared spectroscopy combined with genetic algorithm and successive projection algorithm was investigated to detect soil organic matter (OM). A total of 394 soil samples were collected from Wencheng, Zhejiang province. In order to simplify calibration model, a total of 18 characteristic wavelengths were selected with usinggenetic algorithm and successive projections algorithm. These characteristic wavelengths were subjected to partial least squares regression (PLSR) with leave-one-out cross validation to establish calibration model of soil organic matter (OM) with coefficient of determination (R2) of 081, 083, RMSEP of 022, 020 and residual prediction deviation (RPD) of 231, 245 for the calibration set and prediction set respectively. The results showed that using genetic algorithm and successive projections algorithm can simplify the model greatly while the assessing indexes of model such as R2, RMSEP and RPD were not reduced greatly compared with indexes of model using full spectra data to develop calibration model. Therefore, genetic algorithm combined with successive projections algorithm can be used to simply the model to predict soil organic matter.
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ZHANG Hai-liang, LUO Wei, LIU Xue-mei, HE Yong. Measurement of Soil Organic Matter with Near Infrared Spectroscopy Combined with Genetic Algorithm and Successive Projection Algorithm[J]. Spectroscopy and Spectral Analysis, 2017, 37(2): 584
Received: Aug. 18, 2013
Accepted: --
Published Online: Jun. 20, 2017
The Author Email: Hai-liang ZHANG (hailiang.zhang@163.com)