Fluorescence Spectral Characteristics of Soil Dissolved Organic Matter in Different Plant Formations After Reverting Farmland to Wetland

Chuan-qi SHI; Yan LI; Shao-peng YU; Bao-zhong HU; Liang JIN

doi:10.3964/j.issn.1000-0593(2020)11-3472-05

Spectroscopy and Spectral Analysis, Volume. 40, Issue 11, 3472(2020)

Fluorescence Spectral Characteristics of Soil Dissolved Organic Matter in Different Plant Formations After Reverting Farmland to Wetland

Chuan-qi SHI^1,1、*, Yan LI^1,1, Shao-peng YU^1,1, Bao-zhong HU^1,1, and Liang JIN^1,1

Author Affiliations

¹[in Chinese]

¹1. College of Life Science, Northeast Agricultural University, Harbin 150038, China

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Figures & Tables(6)

Fig. 1. Three dimensional fluorescence components of soil DOM

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Table 1. Fluorescence spectrum indices of soil DOM

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Table 1. Fluorescence spectrum indices of soil DOM

群系	HIX	FI₃₇₀	BIX
U	1.285±0.190ab	1.676±0.011bc	0.787±0.012c
S	1.187±0.215ab	1.666±0.016bc	0.801±0.020bc
A	1.028±0.057b	1.597±0.067c	0.713±0.016d
P	1.449±0.274a	1.637±0.013c	0.716±0.001d
C	1.092±0.228ab	1.802±0.081a	0.833±0.003a
T	1.124±0.231ab	1.747±0.011ab	0.816±0.024ab

Table 2. Fluorescence intensity of organic components of soil DOM

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Table 2. Fluorescence intensity of organic components of soil DOM

群系	C1	C2	C3	总组分和
U	958.24±26.70b	679.78±13.66a	1 050.96±237.93bc	2 688.98
S	633.62±84.36c	538.35±67.93b	979.85±197.96bc	2 151.82
A	645.28±28.33c	418.81±26.74c	1 023.76±95.08bc	2 087.84
P	1 530.40±148.72a	733.58±11.27a	1 192.39±109.33ab	3 456.38
C	703.46±106.28c	507.77±63.46b	756.10±138.04c	1 967.33
T	959.30±79.06b	749.40±54.12a	1 520.86±348.01a	3 229.57

Table 3. Relative ratio (%) of organic components of soil DOM

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Table 3. Relative ratio (%) of organic components of soil DOM

有机组分	群系						占总组分和的比例
有机组分	U	S	A	P	C	T	占总组分和的比例
C1	35.64±0.99a	29.45±3.92b	30.91±1.36b	44.28±4.30a	35.76±5.40ab	29.70±2.45b	34.85
C2	25.28±0.51b	25.02±3.16b	20.06±1.28c	21.22±0.33c	25.81±3.23b	23.20±1.68b	23.28
C3	39.08±8.85a	45.54±9.20a	49.03±4.55a	34.50±3.16b	38.43±7.02a	47.09±10.78a	41.87

Table 4. Physiochemical properties of soil samples

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Table 4. Physiochemical properties of soil samples

群系	pH	BD/ (g·cm^-3)	MC/%	CEC/ (cmol·kg^-1)	TOC/ (g·kg^-1)	TN/%	TP/%	TK/%
U	6.97±0.12a	1.35±0.02a	32.89±2.20c	8.00±0.12d	51.33±2.80a	6.22±0.13b	0.65±0.06a	7.32±0.16a
S	6.82±0.27a	1.23±0.09b	30.63±1.53c	6.85±0.22d	42.00±2.86b	6.62±0.14a	0.52±0.04b	2.64±0.04b
A	6.77±0.37a	1.40±0.03a	23.18±1.90d	3.30±0.04e	9.51±0.36e	1.45±0.12f	0.33±0.03d	1.83±0.04d
P	6.63±0.11a	0.89±0.03d	52.99±2.78a	18.63±1.35a	27.68±2.04c	3.44±0.12e	0.43×0.02c	1.68±0.05d
C	6.73±0.09a	1.00±0.04c	40.46±1.65b	12.03±0.15b	7.73±0.45e	4.78±0.10d	0.42±0.01c	0.86±0.04e
T	6.76±0.22a	0.81±0.02d	53.51±2.68a	10.82±0.90c	16.45±1.66d	5.33±0.10c	0.31±0.02d	2.28±0.14c

Table 5. Correlation between organic components of soil DOM and physiochemical properties
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Table 5. Correlation between organic components of soil DOM and physiochemical properties
有机组分 pH BD MC CEC TOC TN TP TK
C1 -0.294 -0.519^* 0.683^** 0.810^** 0.169 -0.106 0.014 0.048
C2 -0.130 -0.570^* 0.754^** 0.614^** 0.351 0.375 0.131 0.303
C3 0.082 -0.374 0.486^* 0.191 0.043 0.026 -0.281 0.058

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Chuan-qi SHI, Yan LI, Shao-peng YU, Bao-zhong HU, Liang JIN. Fluorescence Spectral Characteristics of Soil Dissolved Organic Matter in Different Plant Formations After Reverting Farmland to Wetland[J]. Spectroscopy and Spectral Analysis, 2020, 40(11): 3472

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