Analysis of Spatial Distribution Characteristics of Dissolved Organic Matter in Typical Greenhouse Soil of Northern China Using Three Dimensional Fluorescence Spectra Technique and Parallel Factor Analysis Model
PAN Hong-wei1,2,3, LEI Hong-jun2, HAN Yu-ping2, XI Bei-dou1,3*, HE Xiao-song3*, XU Qi-gong3, LI Dan3, SONG Cai-hong3
1. College of Water Conservancy and Architecture, Northeast Agricultural University, Harbin 150030, China 2. School of Water Conservancy, North China University of Water Conservancy and Electric Power, Zhengzhou 450011, China 3. Innovation Base of Ground Water & Environmental System Engineering, Chinese Research Academy of Environmental Science, Beijing 100012, China
Abstract：The aim of the present work is to study the soil DOM characteristics in the vegetable greenhouse with a long-term of cultivation. Results showed that the soil DOM mainly consisted of three components, fulvic acid-like (C1), humic acid-like (C2) and protein-like (C3), with C1 as the majority one. The distribution of DOM in space was also studied. In vertical direction, C1 and C2 decreased significantly with the increase in soil depth, while C3 component decreased after increased. The humification coefficient decreased fast from 0~20 to 30~40 cm, and then increased from 30~40 to 40~50 cm. In the horizontal direction, the level of C2 component varied greatly in space, while that of C1 component changed little, and that of C3 component fell in between the above two. The change in the humification degree of each soil layer significantly varied spatially. Humification process of soil organic matter mainly occurred in the surface soil layer. In addition, the humification degree in space also changed significantly. The new ideas of this study are: (1) Analyze the composition and spatial heterogeneity of soil DOM in the vegetable greenhouse; (2) Use three dimensional fluorescence spectra technology and parallel factor analysis model successfully to quantify the components of soil DOM, which provides a new method for the soil DOM analysis.
潘红卫1,2,3，雷宏军2，韩宇平2，席北斗1,3*，何小松3*，许其功3，李 丹3，宋彩红3 . PARAFAC解析北方典型蔬菜大棚土壤DOM三维荧光光谱 [J]. 光谱学与光谱分析, 2014, 34(06): 1582-1588.
PAN Hong-wei1,2,3, LEI Hong-jun2, HAN Yu-ping2, XI Bei-dou1,3*, HE Xiao-song3*, XU Qi-gong3, LI Dan3, SONG Cai-hong3. Analysis of Spatial Distribution Characteristics of Dissolved Organic Matter in Typical Greenhouse Soil of Northern China Using Three Dimensional Fluorescence Spectra Technique and Parallel Factor Analysis Model. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2014, 34(06): 1582-1588.
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