Article (Scientific journals)
Analysis of DOC component structure of black soil profile with straw deeply bried and based on fluorescence spectrum
Kuang, Enjun; Chi, Feng-Qin; Zhang, Jiu-Ming et al.
2022In Guang Pu Xue Yu Guang Pu Fen Xi, 42 (10), p. 3243 - 3248
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Keywords :
PARAFAC analysis; Soil depth; Soil dissolved organic carbon; Straw return; Three-dimensional fluorescence; Black soil; Dissolved organic carbon; Maize straw; PARAFAC; PARAFAC analyse; Three-dimensional fluorescence spectra; Three-dimensional fluorescences; Instrumentation; Spectroscopy
Abstract :
[en] Taking black soil as the research object, the difference in the three-dimensional fluorescence spectrum of soil dissolved organic carbon (DOC) after returning maize straw to the field at different soil depths (0~2, 3~10, 11~20, 21~30 and 31~40 cm) were analyzed. The change characteristics of humification degree of maize straw return to deep soil were discussed. The results showed that straw return could increase the content of soil DOC. The characteristics of three-dimensional fluorescence spectra showed that there were two kinds of fluorescence components of soil DOC. CK~T4 treatments were humus like components (Ex/Em=250~275/455 nm) and tryptophan like components (Ex/Em=225~237/340~350 nm), while T5 treatment was humus-like components (250~275/455 nm) and tyrosine like components (Ex/Em =225/304 nm), there were small authigenic components at a depth of 31~40 cm, and the humification coefficient was the highest. The fluorescence intensity of soil DOC component C1 increased with the deepening of straw returning depth, while the C2 component showed a fluctuating state, and the fluorescence intensity increased first and then decreased. Soil DOC was affected by both endogenous and exogenous sources (FI>1.4, 0.6<bix<="" span=""></bix.
Disciplines :
Agriculture & agronomy
Author, co-author :
Kuang, Enjun ;  Université de Liège - ULiège > TERRA Research Centre ; Key Laboratory of Soil Environment and Plant Nutrition of Heilongjiang Province, Heilongjiang Academy of Black Soil Conservation & Utilization, Harbin, China ; Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
Chi, Feng-Qin;  Key Laboratory of Soil Environment and Plant Nutrition of Heilongjiang Province, Heilongjiang Academy of Black Soil Conservation & Utilization, Harbin, China
Zhang, Jiu-Ming;  Key Laboratory of Soil Environment and Plant Nutrition of Heilongjiang Province, Heilongjiang Academy of Black Soil Conservation & Utilization, Harbin, China
Xu, Ming-Gang;  Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
Gilles, Colinet  ;  Department of Biosystems Engineering (BIOSE), Gembloux Agro-Bio Tech of Université de Liège, Belgium
Su, Qing-Rui;  Key Laboratory of Soil Environment and Plant Nutrition of Heilongjiang Province, Heilongjiang Academy of Black Soil Conservation & Utilization, Harbin, China
Hao, Xiao-Yu;  Key Laboratory of Soil Environment and Plant Nutrition of Heilongjiang Province, Heilongjiang Academy of Black Soil Conservation & Utilization, Harbin, China
Zhu, Bao-Guo;  Jiamusi Branch of Heilongjiang Academy of Agricultural Sciences, Jiamusi, China
Language :
Chinese
Title :
Analysis of DOC component structure of black soil profile with straw deeply bried and based on fluorescence spectrum
Publication date :
October 2022
Journal title :
Guang Pu Xue Yu Guang Pu Fen Xi
ISSN :
1000-0593
Publisher :
Science Press
Volume :
42
Issue :
10
Pages :
3243 - 3248
Peer reviewed :
Editorial reviewed
Available on ORBi :
since 06 January 2023

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