Application of Vis-NIR spectroscopy for determination the content of organic matter in saline-alkali soils
作者: Yuling BaJinbao LiuJichang HanXingchang Zhang
作者单位: 1College of Resource and Environment, Northwest A&F University, Yangling 712100, China
2Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Xi'an, Shaanxi 710075, China
3Institute of Water Resources and Hydro-electric Engineering, Xi'an University of Technology, Xi'an 710048, China
4Key Laboratory of Degraded and Unused Land Consolidation Engineering, The Ministry of Natural Resources, Xi'an, Shaanxi 710075, China
刊名: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2020, Vol.229
来源数据库: Elsevier Journal
DOI: 10.1016/j.saa.2019.117863
关键词: Saline-alkali soilSOMVis-NIR spectroscopyPartial least squares regressionChemometrics
英文摘要: Abstract(#br)Visible and near-infrared diffuse reflectance spectroscopy (Vis-NIR) has been recognized as a fast method to evaluate the content of soil organic matter (SOM) in various types of soil. The accuracy of Vis-NIR is comparable to conventional laboratory methods for estimating SOM. However, very few studies have applied Vis-NIR to estimate SOM in saline-alkali soil. This study aimed to investigate the efficiency of spectral data for evaluating SOM in saline-alkali soil. Soil samples (n = 291) were collected from the five major saline-alkali soil regions in Shaanxi. SOM was measured using standard methods and the samples were scanned using ASD Fieldspec4 at wavelength of 350–2500 nm to obtain spectral data. Twenty-six pre-processing methods were tested and partial least squares...
全文获取路径: Elsevier  (合作)

  • spectroscopy 分光学
  • alkali 
  • determination 测定
  • matter 物质
  • saline 盐的
  • least 最少的
  • organic 有机的
  • content 品位
  • Application 应用
  • regression 海退