Characterizing Soil Dissolved Organic Matter in Typical Soils from China Using Fluorescence EEM–PARAFAC and UV–Visible Absorption

Qin, Xiaoquan; Yao, Bo; Liang, Jin; Zheng, Xiangzhou; Jie, Ma; Benedetti, Marc F.; Li, Yongtao; Ren, Zongling

doi:10.1007/s10498-019-09366-7

Cited by 42 publications

(14 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To avoid the inner filter effects, the samples were diluted 10 times with DI water first when their maximum absorbance (254 nm in this study) was >0.1. Water Raman scattering of sample spectra was eliminated by subtracting the DI water blank spectrum that was recorded under the same conditions …”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Nanobubble Watering Affects Nutrient Release and Soil Characteristics

Xue

Marhaba

Wen

2022

ACS Agric. Sci. Technol.

View full text Add to dashboard Cite

Irrigation with gaseous nanobubble (NB)-containing water has been demonstrated to promote seed germination and plant growth. To further reveal the impacts of NBs on plant growth, this study compared soil chemical properties and the release of soil elements (e.g., NH4 +, K+, and Mg2+) before and after immersion with different gaseous NBs such as oxygen (O2), nitrogen (N2), hydrogen (H2), carbon dioxide (CO2), and air. Exposure to NBs resulted in different influences on the soil pH, dissolved oxygen (DO), redox potential, and nutrient release. For instance, O2 NBs significantly increased both DO and redox potentials of the treated soil. CO2 NBs increased the release of Ca2+, Mg2+, and PO4 3– from the treated soil, whereas N2 NBs only improved the NH4 + release from the soil. Finally, multiple-factor correlation analysis and principal component analysis revealed intercorrelations between the different soil properties and confirmed that the nutrient ion release was highly dependent on the type or composition of NBs.

show abstract

Section: Methodsmentioning

confidence: 99%

“…Water Raman scattering of sample spectra was eliminated by subtracting the DI water blank spectrum that was recorded under the same conditions. 20 2.4. Statistical Analysis.…”

Section: Methodsmentioning

confidence: 99%

Nanobubble Watering Affects Nutrient Release and Soil Characteristics

Xue

Marhaba

Wen

2022

ACS Agric. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…HIX characterises the soil DOM humification degree. HIX values at the different depths ranged between 0.41-0.80, and were thus less than 4, indicating that local sources largely contributed to DOM [28]. The humification degree of cultivated soil was greater compared to forest soil in both the upper and lower layers, and was slightly lower than forest soil in the 10-20 cm layer, thereby indicating weak humus characteristics and obvious endogenous characteristics (Table 3).…”

Section: Fluorescence Indices Analysismentioning

confidence: 99%

Fluorescence Spectral Characteristics of Soil Dissolved Organic Matter in Zhengyangguan, Middle Reaches of Huaihe River Basin

Ge¹,

Gao²,

Luan³

et al. 2023

Pol. J. Environ. Stud.

View full text Add to dashboard Cite

In order to study the spectral characteristics of soil dissolved organic matter (DOM) under agricultural non-point source pollution in the Huaihe River Basin, this study collected the soil from the Pihe River, a first-order tributary of the Zhengyangguan River, and used the parallel factor analysis method (PARAFAC) to obtain two components of humus and protein. Soil dissolved organic carbon (DOC) content was significantly different under different land use types (P<0.01). The soil DOM in the Huaihe River Basin is affected by both terrestrial and microbial sources. The biological index (BIX) of forest soil is significantly larger than that of cultivated land at different depths, which is caused by the rich plant diversity of forest land. The humification degree of cultivated land soil is higher than that of forest land, and the humification effect of cultivated land soil fertility is stronger due to human factors. The humification index (HIX), BIX and fluorescence index (FI) have a good indication of the degree of soil humification. At the same time, the greater the BIX, FI and spectral slope ratio (S R ), the greater the contribution of microorganisms to soil DOM.

show abstract

“…Among the many methods used in the study of natural organic matter of various origins, fluorescence spectroscopy deserves special attention (Carstea et al, 2016;L.M. dos Santos et al, 2010;Gao, Dou, & Wang, 2019;Hu et al, 2020;Hur & Kim, 2009;Mohinuzzaman et al, 2020;Provenzano, Miano, & Senesi, 1989;Qin et al, 2020;N. Senesi, Miano, Provenzano, & Brunetti, 1991;G.…”

Section: Introductionmentioning

confidence: 99%