Effects of forest fires on water extractable organic matter and humic substances from Mediterranean soils: UV–vis and fluorescence spectroscopy approaches

Geoderma ◽  
2011 ◽  
Vol 160 (3-4) ◽  
pp. 434-443 ◽  
Author(s):  
A. Vergnoux ◽  
R. Di Rocco ◽  
M. Domeizel ◽  
M. Guiliano ◽  
P. Doumenq ◽  
...  
Keyword(s):  
Organic Matter ◽  
Fluorescence Spectroscopy ◽  
Humic Substances ◽  
Forest Fires ◽  
Mediterranean Soils ◽  
Extractable Organic Matter ◽  
Water Extractable

Chemodiversity of water-extractable organic matter in sediment columns of a polluted urban river in South China

2021 ◽  
Vol 777 ◽  
pp. 146127
Author(s):  
Peng Zhang ◽  
Chun Cao ◽  
Ying-Hui Wang ◽  
Kai Yu ◽  
Chongxuan Liu ◽  
...  
Keyword(s):  
Organic Matter ◽  
South China ◽  
Urban River ◽  
Extractable Organic Matter ◽  
Water Extractable

ORGANIC MATTER CHARACTERISTICS OF UNDISTURBED AND CULTIVATED CHERNOZEMIC AND SOLONETZIC A HORIZONS

1979 ◽  
Vol 59 (4) ◽  
pp. 349-356 ◽  
Author(s):  
J. F. DORMAAR
Keyword(s):  
Organic Matter ◽  
Humic Substances ◽  
Chelating Resin ◽  
Anthropogenic Pressures ◽  
Organic C ◽  
Amide Bonds ◽  
Acid Ratio ◽  
Humic Materials ◽  
Fallow System ◽  
Extractable Organic Matter

Under a wheat-fallow system of farming practised on Brown, Dark Brown, and Black Chernozemic soils, on a Black Solodized Solonetz, and on Brown and Black Solods, organic C decreased by as much as 60%; the humic acid/fulvic acid ratio decreased little for the semiarid soils but up to 38% for the Black soils; ethanol/benzene-extractable organic matter increased by as much as 330%; chelating resin-extractable C increased by 27–115%; and total acidity of the extracted humic substances increased up to 36%. The ash contents of the humic substances from the Ah horizons were all less than 12%, whereas those of the Ap horizons varied between 20 and 28%. Apparent differences between the infrared spectra of the resin-extractable humic substances of the Ah and Ap horizons existed particularly near 2920 and 1550 cm−1 suggesting less aliphatic C-H and amide bonds. Anthropogenic pressures have wrought, therefore, distinct measurable qualitative changes, i.e., the general trend with cultivation was towards humic materials with a decreased proportion of side chain components, such as C-H and NH2 groups, but increased carboxyl group content.

scholarly journals Quantity and Nature of Water‐Extractable Organic Matter from Sandy Loam Soils with Potato Cropping Management

ael ◽  
2016 ◽  
Vol 1 (1) ◽  
pp. 160023 ◽  
Author(s):  
Zhongqi He ◽  
Mingchu Zhang ◽  
Aiqin Zhao ◽  
O. Modesto Olanya ◽  
Robert P. Larkin ◽  
...  
Keyword(s):  
Organic Matter ◽  
Sandy Loam ◽  
Extractable Organic Matter ◽  
Water Extractable

A comparison of extraction procedures for water-extractable organic matter in soils

2014 ◽  
Vol 65 (4) ◽  
pp. 520-530 ◽  
Author(s):  
J. Guigue ◽  
O. Mathieu ◽  
J. Lévêque ◽  
S. Mounier ◽  
R. Laffont ◽  
...  
Keyword(s):  
Organic Matter ◽  
Extraction Procedures ◽  
Extractable Organic Matter ◽  
Water Extractable
Sign in / Sign up

Export Citation Format

Share Document