scholarly journals The content and composition of humus in pseudogleys of slopes and plains in South Macva and Pocerina

2013 ◽  
pp. 71-86
Author(s):  
Mladen Dugonjic ◽  
Svjetlana Cupac ◽  
Aleksandar Djordjevic ◽  
Mila Vicentijevic ◽  
Milan Knezevic ◽  
...  
Keyword(s):  
Land Use ◽  
Humic Acids ◽  
Humus Content ◽  
Arable Land ◽  
Fulvic Acids ◽  
Land Uses ◽  
Lower Content ◽  
Surface Horizon ◽  
Humus Quality

The scope of this paper was to examine the influence of two subtypes of pseudogley soil (of planes and of slopes) and three different land uses (forest, grassland and arable land) on the content and composition of humus in south Macva and Pocerina. The humus content was determined by dichromate method, and hu?mus components were measured using the method proposed by Kononova and Bel?cikova. The studied soils are mostly characterized by low humus content. Humus content is significantly higher in pseudogleys of plains compared to pseudogleys of slopes. Pseudogleys under grass and crops have significantly lower content of humus compared to the pseudogleys under forest. Important characteristic of hu?mus composition of surface horizon is dominant portion of fulvic over humic acids. Pseudogleys of plains have statistically significant higher amount of humic acids. The composition of humus is significantly different in pseudogley under forest compared to pseudogleys under grass and crops: it has more fulvic acids, less humin, and lower Ch:Cf ratio. Changes in pseudogley land use have produced better humus quality.

scholarly journals Humification degree of Rendzina soil humic acids influenced by carbonate leaching and land use

2015 ◽  
Vol 60 (4) ◽  
pp. 443-453 ◽  
Author(s):  
Svjetlana Radmanovic ◽  
Aleksandar Djordjevic ◽  
Natasa Nikolic
Keyword(s):  
Land Use ◽  
Humic Acids ◽  
Ph Value ◽  
Arable Land ◽  
Carbonate Content ◽  
Land Uses ◽  
Forest Land ◽  
Humification Degree ◽  
Carbonate Leaching

The humification degrees of humic acids extracted from calcareous and decarbonated Rendzinas under different land use were characterized upon their optical properties, to evaluate the influence of carbonate leaching (decarbonation) and different land uses. Decarbonation influenced the humification degree of humic acids positively. Base leaching and acidification of decarbonated Rendzinas led to a decrease in humification degree of humic acids. In calcareous Rendzinas, the humification degree of humic acids was in descending order: grassland>arable land>forest land, and in decarbonated Rendzinas: arable land>grassland>forest land. The humification degree of humic acids was higher in the calcareous forest and grassland Rendzinas compared to decarbonated Rendzinas, analogously in decarbonated arable land compared to calcareous arable land Rendzinas. Differences in the humification degree of humic acids among various land uses that emerged between calcareous and decarbonated Rendzinas indicate the dominant influence of soil chemical characteristics (carbonate content and pH value) compared with the quantity and quality of the organic litter input.

scholarly journals Assessment of the Ecological Stability of the Village of Bielovce as a Result of to Changes in Land Use

2016 ◽  
Vol 24 (2) ◽  
pp. 1-6 ◽  
Author(s):  
Peter Ivan ◽  
Tatiana Chebeňová
Keyword(s):  
Land Use ◽  
Human Activity ◽  
Environmental Conditions ◽  
Human Population ◽  
Arable Land ◽  
Land Uses ◽  
Ecological Stability ◽  
Area Of Interest ◽  
Negative Factors ◽  
The Village

Abstract Globally, the human population is growing, which causes increasing demands on landscapes. Human activity significantly influences the ecological balance, especially in the negative. Ecological stability is the basis for assessments of all environmental conditions and for assessments according to new land uses. The area of interest is evaluated according to both positive and negative factors. There are many methodologies for calculating ecological stability, e.g., Muchová et al. (2009); Řeháčková - Pauditšová (2007); Kupková (2002); Streďanský et al. (1995) and Löw et al. (1984). The aim of this paper is to compare the works of the mentioned authors concerning the ecological stability of the district of Levice (Slovakia), specifically in the municipal cadastre region of Bielovce. The land uses of this territory have changed during some periods. We compared the state of the land uses in the years 1950, 2012 and 2014. During this period, the proportion of arable land increased, and the proportion of forest decreased. In the area of interest, the ecological stability increased, but not as significantly as we expected. The processed data were prepared in GIS.

scholarly journals Land–Use Changes Influencing C Sequestration and Quality in Topsoil and Subsoil

Agronomy ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 520 ◽  
Author(s):  
Benjapon Kunlanit ◽  
Somchai Butnan ◽  
Patma Vityakon
Keyword(s):  
Land Use ◽  
Humic Acid ◽  
Humic Acids ◽  
Soil Depth ◽  
Land Use Changes ◽  
Rice Paddy ◽  
C Sequestration ◽  
Land Uses ◽  
Intergovernmental Panel ◽  
Soc Stocks

Soil capacity as a major carbon (C) sink is influenced by land use. Estimates of soil organic carbon (SOC) sequestration have mostly focused on topsoils [0–30 cm official Intergovernmental Panel on Climate Change (IPCC) soil depth]. We investigated SOC stocks and their quality as influenced by land-use changes. Soil samples were collected from five soil depths down to 100 cm of three adjacent fields each representing a different land use—forest, cassava, and rice paddy—in Northeast Thailand. Sequestration of SOC in topsoils under all land uses was higher, as indicated by SOC stocks (59.0–82.0 Mg ha−1) than subsoils (30–100 cm) (27.0–33.0 Mg ha−1). The soil profile (0–100 cm) of the forest had higher stocks of SOC and humic acid (115.0 and 6.8 Mg ha−1, respectively) than those of cultivated land uses [paddy (100.0 and 4.8 Mg ha−1, respectively) and cassava (87.0 and 2.3 Mg ha−1, respectively)], which accounted for an average 30% increase in SOC sequestration over those with only topsoil. Topsoils of the forest had higher humic acid content but narrower E4:E6 ratio [the ratio of absorbances at 465 nm (E4) and at 665 nm (E6)] of humic acids (2.8), indicating a higher degree of humification and stabilization than the cultivated soils (3.2–3.6). Subsoil C was higher quality, as indicated by the lower E4:E6 ratio of humic acids than topsoils in all land uses.

scholarly journals Transformation of organic carbon in alluvial soils under different land uses

2020 ◽  
Vol 27 (1) ◽  
Author(s):  
Alvyra Šlepetienė ◽  
Kazimiež Duchovski ◽  
Jonas Volungevičius
Keyword(s):  
Land Use ◽  
Organic Carbon ◽  
Total Organic Carbon ◽  
Arable Land ◽  
Soil Layer ◽  
Soil Samples ◽  
Plant Residues ◽  
Land Uses ◽  
Forest Land ◽  
Alluvial Deposits

The aim of this study – to evaluate the status of organic carbon (OC) under different land uses of soils formed in alluvial deposits. The soil samples were collected from 0–10, 10–20 and 20–30 cm depths in three field replicates.Three land uses were investigated: arable land, grassland and forest. The experimental site is situated near Surviliškis, Kėdainiai District (55°26′08.37′′N, 24°02′27.75′′Y) in Central Lowland of Lithuania. A total of 27 soil samples, collected from 0–10, 10–20 and 20–30 cm depths in three field replicates, were analysed for OC. The samples were prepared for analysis by removing plant residues, grinding and sieving through a 0.25 mm sieve. For all land uses, the highest content of OC was found in the upper 0–10 cm soil layer of the soil, with the highest values found in the forest land use. Fast-growing deciduous trees are an effective means to increase the content of OC in alluvial soil, especially in the 0–10 cm layer. The distribution of OC in the soil layers depended on the land use. Grassland and forest land uses allow OC to be preserved throughout the 0–30 cm layer, with less OC differentiation than in arable land. This could be attributed to the specificities of organic matter accumulation and degradation in different land uses. Not only the amount of labile organic carbon (similar to total organic carbon) was highest (0.392 g kg–1) in forest soil in the 0–10 cm layer, it also had a higher relative share in the total organic carbon (2.9%) than in other land uses – arable land and grassland (2.3–2.4%).

scholarly journals Variation of soil organic carbon and physical properties in relation to land uses in the Yellow River Delta, China

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Shuying Jiao ◽  
Junran Li ◽  
Yongqiang Li ◽  
Ziyun Xu ◽  
Baishu Kong ◽  
...  
Keyword(s):  
Land Use ◽  
Physical Properties ◽  
Soil Quality ◽  
Yellow River ◽  
Arable Land ◽  
Yellow River Delta ◽  
Soil Physical Properties ◽  
Land Uses ◽  
Forest Land ◽  
The Yellow River Delta

AbstractSoil physical properties and soil organic carbon (SOC) are considered as important factors of soil quality. Arable land, grassland, and forest land coexist in the saline-alkali reclamation area of the Yellow River Delta (YRD), China. Such different land uses strongly influence the services of ecosystem to induce soil degradation and carbon loss. The objective of this study is to evaluate the variation of soil texture, aggregates stability, and soil carbon affected by land uses. For each land use unit, we collected soil samples from five replicated plots from “S” shape soil profiles to the depth of 50 cm (0–5, 5–10, 10–20, 20–30, and 30–50 cm). The results showed that the grassland had the lowest overall sand content of 39.98–59.34% in the top 50 cm soil profile. The content of soil aggregates > 0.25 mm (R0.25), mean weight diameter and geometric mean diameter were significantly higher in grassland than those of the arable and forest land. R0.25, aggregate stability in arable land in the top 30 cm were higher than that of forest land, but lower in the soil profile below 20 cm, likely due to different root distribution and agricultural practices. The carbon management index (CMI) was considered as the most effective indicator of soil quality. The overall SOC content and CMI in arable land were almost the lowest among three land use types. In combination with SOC, CMI and soil physical properties, we argued that alfalfa grassland had the advantage to promote soil quality compared with arable land and forest land. This result shed light on the variations of soil properties influenced by land uses and the importance to conduct proper land use for the long-term sustainability of the saline-alkali reclamation region.

scholarly journals CHANGES IN THE CONTENT AND QUALITY OF ORGANIC MATTER IN AGRARIAN SOILS OF NON-CHERNOZEM ZONE DEPENDING ON ANTHROPOGENIC IMPACT

2010 ◽  
pp. 13-22
Author(s):  
N. Ismagilova
Keyword(s):  
Organic Matter ◽  
Optical Density ◽  
Humic Acids ◽  
Humus Content ◽  
Fulvic Acids ◽  
Black Soil ◽  
Organic Fertilizers ◽  
Optimal Interval ◽  
Humus State

On the basis of experimental and literary data the assessment of humus state of arable layer of differently cultivated typical agrarian-grey heavy loamy non-eroidated soils of the center of the Non-Black Earth zone of Russia was carried out. The gradations of humus content corresponding to the different level of soil fertility were determined. The optimal interval of humus content is calculated on the basis of its minimal value in non-erodized agrarian soils of the region and optimal limits of transforming organic matter. It is shown that at development of grey soils under forest in arable horizonThe content of humus, fulvic acids, mobile humic acids, extracted 0.1 n. NaOH, decreases, and the amount of humic acids associated with Ca sharply increases with the increase of their optical density and ratio to mobile humic acids to the level in agronomic black soil. Further domestication of agrarian soils on the background of systematic application of increased doses of organic fertilizers, along with increasing the content of humus, there are reverse changes in the ratio of these fractions of humic acids. At the same time, the optical density of humic acids associated with clay minerals decreases significantly, which indicates the processes of their renewal and enrichment by aliphatic structures. Criteria of difference between agrarian soils and podzolic soils and agronomic chernozems by quality of humus in arable horizon are discussed.

Impact of sewage sludge application on the humus state of sod-podzolic soil of subcarpathia under energetic willow plantation

2016 ◽  
Vol 3 (2) ◽  
pp. 26-31 ◽  
Author(s):  
V. Lopushniak ◽  
G. Hrytsulyak
Keyword(s):  
Sewage Sludge ◽  
Humic Acids ◽  
Group Composition ◽  
Podzolic Soil ◽  
Humus Content ◽  
Soil Samples ◽  
Humus State ◽  
The Impact ◽  
Sludge Application ◽  
Humus Quality

Aim. To determine the impact of energetic willow fertilization with sewage sludge (SS) and manure on the change in the humus state of sod-podzolic soil of Subcarpathia under energetic willow plantation. Methods. Soil samples were collected on the experimental fi eld of Ivano-Frankivsk College of LNAU. The humus con- tent was determined according to DSTU 4289:2004; that of its labile forms – according to DSTU 4732:2007, the content of organic matter in SS and manure – according to GOST 27980-88. Results. The application of sewage sludge for energetic willow grown in sod-podzolic soil of Subcarpathia led to the increase in the total humus content by 0.5–1.1 % compared to the control (without fertilizers). The use of SS preconditioned the change in the humus quality, including the increase in humic acids in humus by 0.05–0.07 %, which promoted the increase in the share of stable humus up to 68–70 % and the stabilization of the humus state of sod-podzolic soil. Conclusions. The application of sewage sludge impacts the change in the indices of humus quality, in particular, its group composition. The level of humic acids content in humus increases with the increase in the dose of the introduced sewage sludge and manure, based thereon. It ensures the increase in the share of stable humus in soil, which, in its turn, conditions the stabilization of humus state of sod-podzolic soil. However, this dependence weakens with depth.

scholarly journals Influence of Land Use on Soil Physiochemical Properties in Semi-Humid Nsukka Area of Southeastern Nigeria

2021 ◽  
pp. 6-17
Author(s):  
Umeobi, E.C. ◽  
Ezeaku P. I. ◽  
Umeugokwe C. P. ◽  
Ezeaku V.I.
Keyword(s):  
Land Use ◽  
Oil Palm ◽  
Arable Land ◽  
Mean Value ◽  
Rubber Plantation ◽  
Land Uses ◽  
Surface Sampling ◽  
Southeastern Nigeria ◽  
Oil Palm Plantation ◽  
Surface Samples

The influence of four land uses (cultivated arable land, grassland, oil palm plantation and rubber plantation) on physical and chemical properties of coarsetextured acid soils was assessed in the semi-humid Nsukka area. Soil auger and core samples were used to achieve surface sampling at the depth intervals of 0-20 and 20-40cm in each land use type. Four diagnostic horizons were identified and sampled in each profile pit dug in each land use, which gave six samples per land use. Results showed that sand (90%) and silt (12%) fraction mean werehighest in oil palm plantation and rubber plantation respectively. The highest clay mean values were obtained from the surface samples (13%) of grassland land and the profile (24%) of rubber plantation. The oil palm plantation silt/clay (0.50) was less than unity and recorded the highest bulk density mean value (1.55 g/cm3 ). The highest value of saturated hydraulic conductivity (113.4 cm/hr) and available water capacity (53%) was recorded in the rubber plantation. The pH of the cultivated (5.7-6.8) and rubber plantation (6.2-6.3) soil increased with depth in contrast to grassland and oil palm plantation. The soil organic carbon and total nitrogen generally decreased with depth across the four land uses. The highest cation exchange capacity mean value was obtained from the surface samples of grassland (19 cmol/kg) and the profile of rubber plantation (16 cmol/kg). This shows that assessment of soil properties under different agronomic land uses will guide decisions on soil degradation associated with land uses

scholarly journals Functional and Taxonomic Diversity of Collembola as Complementary Tools to Assess Land Use Effects on Soils Biodiversity

2021 ◽  
Vol 9 ◽  
Author(s):  
Sophie Joimel ◽  
Christophe Schwartz ◽  
Jonathan Bonfanti ◽  
Mickaël Hedde ◽  
Paul Henning Krogh ◽  
...  
Keyword(s):  
Land Use ◽  
Arable Land ◽  
Urban Ecosystems ◽  
Taxonomic Diversity ◽  
Model Organisms ◽  
Land Uses ◽  
Land Use Classification ◽  
Soil Biodiversity ◽  
Functional Homogenization ◽  
Functional Indices

Collembola have been proposed for several decades as a good model organisms to survey soil biodiversity; but most of the studies focused on taxonomic endpoints. The main objectives of this study are to compare the effects of the different land uses, including urban and industrial land uses, while using both collembolan functional and taxonomic biodiversity approaches. We collected data on 3,056 samples of Collembola communities across 758 sites in various land uses throughout France. The types of land use considered included all types of human activity from forestry to urban, industrial, traffic, mining and military areas, agricultural grassland, arable land, vineyards and urban vegetable gardens. In order to study functional and taxonomic biodiversity, we used community-weighted means, functional indices, species richness and density. When looking at collembolan functional diversity, urban and industrial soils appear clearly less diversified than when considering the taxonomic diversity. We suspect here a functional homogenization effect commonly reported in the literature for various organisms in urban ecosystems. Our study provides range of values for different taxonomic and functional indices of Collembola communities in a wide land use classification across France.

scholarly journals The Contingency of Soil Microorganisms and the Selected Soil Biotic and Abiotic Parameters Under Different Land-Uses

2019 ◽  
Vol 38 (2) ◽  
pp. 101-116
Author(s):  
Jana Júdová ◽  
Radoslava Kanianska ◽  
Jana JaĎuĎová ◽  
Miriam Kizeková ◽  
Jarmila Makovníková
Keyword(s):  
Land Use ◽  
Microbial Activity ◽  
Soil Microorganisms ◽  
Land Use Changes ◽  
Arable Land ◽  
Soil Parameters ◽  
Land Uses ◽  
Bacterial Strains ◽  
Study Sites ◽  
Density And Biomass

AbstractLand use changes are local phenomena with global impact. They have an impact in a cumulative sense on biodiversity or soil degradation. This study aimed to examine the effects of different land-uses (arable land, permanent grasslands, abandoned grasslands, forest land) on the selected biotic and abiotic soil parameters in the Slovak mountain study sites Liptovská Teplička and Tajov. Biotic (microbial community structure, earthworm number and fresh body biomass, arthropod number and fresh body biomass), and abiotic chemical soil parameters (pH, total organic carbon, total nitrogen, nutrients) were measured. According to MALDI-TOF (Matrix Assisted Laser Desorption Ionization-Time of Flight), several bacterial strains were identified. Mutual relations between soil microorganisms and soil biotic and abiotic properties determined by different land uses were analysed. Microbial response expressed as average well-colour development (AWCD) values indicated relations between higher microbial diversity and higher nutrient availability at both study sites. In the comparison of land use types, permanent grasslands (PG) showed the lowest microbial activity in the depth of 0–0.1 m. But in the depth of 0.2-0.3 m in PG of both study sites, the higher microbial activity was recorded compared to the depth of 0-0.1 m. In addition, lower AWCD values in PG were in line with the lower available P and K content but higher earthworm density and biomass.

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