Humic fractions as indicators of soil organic matter responses to clear‐cutting in the mountain and lowland conditions of south‐western Poland

Humic fractions as indicators of soil organic matter responses to clear-cutting in the mountain and lowland conditions of south-western Poland

10.22541/au.161528765.59591739/v2 ◽

2021 ◽

Author(s):

Elzbieta Jamroz ◽

Maria Jerzykiewicz

Keyword(s):

Organic Matter ◽

Soil Organic Matter ◽

Negative Impact ◽

Forest Harvesting ◽

Temperate Climate ◽

Mountain Forest ◽

Semiquinone Radical ◽

Mountain Regions ◽

Clear Cutting ◽

Humic Fractions

Clear-cutting means forest removing (stem only) and is the most common type of forest harvesting but undoubtedly has a negative impact on the C budget in soils. This work aimed to describe responses of soil organic matter in the forest soils to forest removing under temperate climate conditions of lowland and mountain regions in south-western Poland. Using advanced instrumental analysis, like EPR, 1H NMR and FT-IR spectroscopy it has been found that clear-cutting, alters C cycling and accelerates decomposition in the forest floor leading to loss of humic fractions in the investigated soils. In the mountain forests the more labile, low-molecular fulvic fraction decreased as the effect of harvesting practice. The transformation of organic matter after clear-cutting resulted in the loss of less humified organic matter containing humic substances of less polymerised molecules. Analysis of the semiquinone radical structures and concentrations showed a decrease in radical concentration observed for HA from mountain clear-cut areas compare to the undisturbed forest. Results presented in this paper have proved less aliphatic character of humic acid molecules from the lowlands, compared to the mountain forest as the effect of clear-cutting. Harvesting practices in mountain regions should be approached with particular care due to the risk of erosion of exposed surfaces and soils containing less humified and less stable organic matter than in the lowlands. Humic fractions of higher solubility, less stability and tendency to migrate through the soil profile may favour the leaching of nutrients and consequently cause the eutrophication of waters.

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Humic fractions as indicators of soil organic matter responses to clear-cutting in the mountain and lowland conditions of south-western Poland

10.22541/au.161528765.59591739/v1 ◽

2021 ◽

Author(s):

Elzbieta Jamroz ◽

Maria Jerzykiewicz

Keyword(s):

Organic Matter ◽

Soil Organic Matter ◽

Negative Impact ◽

Forest Harvesting ◽

Temperate Climate ◽

Mountain Forest ◽

Semiquinone Radical ◽

Mountain Regions ◽

Clear Cutting ◽

Humic Fractions

Clear-cutting means forest removing (stem only) and is the most common type of forest harvesting but undoubtedly has a negative impact on the C budget in soils. This work aimed to describe responses of soil organic matter in the forest soils to forest removing under temperate climate conditions of lowland and mountain regions in south-western Poland. Using advanced instrumental analysis, like EPR, 1H NMR and FT-IR spectroscopy it has been found that clear-cutting, alters C cycling and accelerates decomposition in the forest floor leading to loss of humic fractions in the investigated soils. In the mountain forests the more labile, low-molecular fulvic fraction decreased as the effect of harvesting practice. The transformation of organic matter after clear-cutting resulted in the loss of less humified organic matter containing humic substances of less polymerised molecules. Analysis of the semiquinone radical structures and concentrations showed a decrease in radical concentration observed for HA from mountain clear-cut areas compare to the undisturbed forest. Results presented in this paper have proved less aliphatic character of humic acid molecules from the lowlands, compared to the mountain forest as the effect of clear-cutting. Harvesting practices in mountain regions should be approached with particular care due to the risk of erosion of exposed surfaces and soils containing less humified and less stable organic matter than in the lowlands. Humic fractions of higher solubility, less stability and tendency to migrate through the soil profile may favour the leaching of nutrients and consequently cause the eutrophication of wate

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Total organic carbon and the humic fractions of the soil organic matter in silvopastoral system

Revista Brasileira de Ciências Agrárias - Brazilian Journal of Agricultural Sciences ◽

10.5039/agraria.v15i2a6874 ◽

2020 ◽

Vol 15 (2) ◽

pp. 1-6

Author(s):

J.R.M. Silva ◽

S.C. Ensinas ◽

G.F. Barbosa ◽

J.V.O. Rezende ◽

P.G.V. Barreta ◽

...

Keyword(s):

Organic Matter ◽

Soil Organic Matter ◽

Organic Carbon ◽

Total Organic Carbon ◽

Silvopastoral System ◽

Humic Fractions

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Analysis of Soil Nutrient Content Characteristic for Inductive Transformed Low-Quality Forest in Greater Higgnan Mountains

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.361-363.1765 ◽

2011 ◽

Vol 361-363 ◽

pp. 1765-1771

Author(s):

Hao Ji ◽

Xi Bin Dong

Keyword(s):

Organic Matter ◽

Soil Organic Matter ◽

Organic Matter Content ◽

Soil Nutrient ◽

Nutrient Content ◽

Potassium Content ◽

Korean Pine ◽

Forest Gap ◽

Clear Cutting ◽

Soil Nutrient Content

In This paper, the miscellaneous tree low-quality forest and Oak low-quality forest in the Greater Hinggan Mountains region were transformed inductively by planting Siberian Korean pine, Mongolica, and Larch, respectively. With the method of using different bandwidth and gap area, the soil nutrient characteristics were changed. The results indicated that the pH of soil increased slightly by different ways of induced transformation, but the variance was not significant (P﹤0.05). After reforming the induced soil organic matter content was balanced, while the basic content of hydrolysable nitrogen increased, and the availiable phosphorus decreased. Soil rapidly-available potassium content in Oak coppice was reduced but raised in the region of secondary performed miscellaneous wood. The variation coefficient of Siberia Korean pine was the largest with different soil pH value of various bandwidth and soil nutrient content (except for availiable phosphorus). Content of soil organic matter and hydrolysis nitrogen, phosphorus and potassium content are significantly positive correlated. At the same time, clear-cutting bandwidth and soil organic matter and hydrolysis nitrogen content are significantly negative correlated. During the transformation of forest gap in the sunny and shady slope, smaller area of forest gap owed the larger soil nutrient content. Generally, soil nutrient content in sunny slope is higher than the shady one.

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