Response of Dissolved Organic Matter Chemical Properties to Long-Term Different Fertilization in Latosol: Insight From Ultraviolet-Visible Spectroscopy

Xiong-wei ZHAO; Dong-ming WU; Qin-fen LI; Xu WANG; Miao CHEN

doi:10.3964/j.issn.1000-0593(2022)10-3210-07

Journals >Spectroscopy and Spectral Analysis >Volume 42 >Issue 10 >Page 3210 > Article

Spectroscopy and Spectral Analysis
Vol. 42, Issue 10, 3210 (2022)

Response of Dissolved Organic Matter Chemical Properties to Long-Term Different Fertilization in Latosol: Insight From Ultraviolet-Visible Spectroscopy

Xiong-wei ZHAO^1、*, Dong-ming WU^2、2;, Qin-fen LI^2、2;, Xu WANG^{1、1; *;}, and Miao CHEN^2、2;

Author Affiliations

¹1. College of Ecology and Environment, Hainan University, Haikou 570228, China

²2. Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China

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DOI: 10.3964/j.issn.1000-0593(2022)10-3210-07 Cite this Article

Xiong-wei ZHAO, Dong-ming WU, Qin-fen LI, Xu WANG, Miao CHEN. Response of Dissolved Organic Matter Chemical Properties to Long-Term Different Fertilization in Latosol: Insight From Ultraviolet-Visible Spectroscopy[J]. Spectroscopy and Spectral Analysis, 2022, 42(10): 3210 Copy Citation Text

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Soil DOC content under different fertilizationNotes: Different lowercase letters on the same soil column represent significant (a, b, c) differences between treatments (p<0.05)

Fig. 1. Soil DOC content under different fertilization
Notes: Different lowercase letters on the same soil column represent significant (a, b, c) differences between treatments (p<0.05)

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Fig. 2. Characteristics of UV-Visible absorption spectrum of soil DOM in different festilization

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Fig. 3. Spectral absorption values under four fertilization managements SUVA₂₅₄(a), SUVA₂₆₀(b), SUVA₂₈₀(c)

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Fig. 4. Spectral absorption ratio under four fertilization managements A₂₅₀/A₃₆₅(a), A₃₀₀/A₄₀₀(b), A₄₆₅/A₆₆₅(c)

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Fig. 5. α(355)of soil DOM under long-term different fertilization

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Fig. 6. Two-dimensional correlation spectrum
(a): Synchronous map; (b): Asynchronous map

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土壤深度/cm	pH	有机质/ (g·kg^-1)	全氮/ (g·kg^-1)	硝态氮/ (mg·kg^-1)	铵态氮/ (mg·kg^-1)	全磷/ (g·kg^-1)	全钾/ (g·kg^-1)	有效磷/ (mg·kg^-1)	速效钾/ (mg·kg^-1)	容重/ (g·cm^-3)
0~20	5.32	9.51	0.30	1.79	0.17	0.29	0.90	1.60	35.62	1.72

Table 1. Basic physical andchemical properties of the tested soil

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	S_275~295	S_R
CK	0.005 94±0.000 473b	0.383±0.021 4b
CF	0.008 74±0.001 57a	1.08±0.340a
OG	0.007 07±0.000 491b	0.447±0.020 7b
ST	0.006 72±0.001 21b	0.408±0.071 3b

Table 2. S and S_R under four fertilization managements

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	DOC	SVUA₂₅₄	SUVA₂₆₀	SUVA₂₈₀	A₂₅₀A₃₆₅	A₃₀₀A₄₀₀	A₄₆₅A₆₆₅	α(355)	S₂₇₅_~₂₉₅	S_R
DOC	1
SVUA₂₅₄	0.502^*	1
SUVA₂₆₀	0.571^*	0.991^**	1
SUVA₂₈₀	0.575^*	0.964^**	0.971^**	1
A₂₅₀A₃₆₅	-0.434	-0.397	-0.347	-0.346	1
A₃₀₀A₄₀₀	0.841^**	0.318	0.339	0.344	-0.201	1
A₄₆₅A₆₆₅	0.940^**	0.490	0.501^*	0.510^*	-0.617^*	0.840^**	1
α(355)	0.572^*	0.991^**	0.996^**	0.963^**	-0.359	0.336	0.510^*	1
S₂₇₅_~₂₉₅	-0.633^*	-0.202	-0.195	-0.202	0.801^**	-0.421	-0.720^**	-0.198	1
S_R	-0.830^**	-0.461	-0.455	-0.461	0.803^**	-0.661^**	-0.923^**	-0.450	0.896^**	1

Table 3. The correlation analysis between soil DOM and Parameters of Ultraviolet-visible spectroscopy

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