Assessment of Agricultural Practices on Volcanic Ash Soils Assisted by Automated Interpretation of Mid-infrared Spectra and Partial Least Squares Multivariate Statistical Approach
An attempt to automated the interpretation of mid-infrared (MIR) spectral profiles of humic acids (HAs)from volcanic ash soils was carried out with the aid of plots displaying the valuable importance for projection (VIP) scores computed by partial least squares (PLS) regression.A set of about 200 dependent variables from whole soils and HAs was examined in 30 uncultivated and agricultural soils with the PLS-VIP method in order extract objective information about the extent to which the MIR intensities may be useful to forecast quantitative and qualitative agroecological and biogeochemical factors,as well as to ascribe individual bands to structural or functional HA variables which were determined by independent multianalytical approaches.
Soil organic matter Humic acids Mid-infrared spectra Partial least squares
Z.Hemández G.Almendros J.Sanz J.P.Pérez-Trujillo J.A.González-Pérez F.J.González-Vila
Department of Analytical Chemistry,University of La Laguna,38206 La Laguna,Spain National Museum of Natural Sciences(Spanish National Research Council,CSIC),28006 Madrid,Spain Institute of General Organic Chemistry,CSIC,Juan de la Cierva 3,28006 Madrid,Spain IRNAS-CSIC.Avda.Reina Mercedes,10,41012-Seville,Spain
国际会议
the 16th Meeting of the International Humic Substances Society (第十六届国际腐殖物质学会大会(IHSS 16))
杭州
英文
141-143
2012-09-09（万方平台首次上网日期，不代表论文的发表时间）