Spatial stochastic modeling of topsoil organic carbon content over a cultivated peri-urban region, using soil properties, soil types and a digital elevation model

2012 ◽  
pp. 161-166 ◽  
Author(s):  
J Hamiache ◽  
L Bel ◽  
E Vaudour ◽  
J Gilliot
Keyword(s):  
Organic Carbon ◽  
Soil Properties ◽  
Carbon Content ◽  
Digital Elevation Model ◽  
Stochastic Modeling ◽  
Soil Types ◽  
Urban Region ◽  
Organic Carbon Content ◽  
Digital Elevation ◽  
Elevation Model

scholarly journals Assessing the Effect of Rubber (Hevea brasiliensis (Willd. ex A. Juss.) Muell. Arg.) Leaf Chemical Composition on Some Soil Properties of Differently Aged Rubber Tree Plantations

Agronomy ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1871 ◽  
Author(s):  
Porntip Puttaso ◽  
Weravart Namanusart ◽  
Kanjana Thumanu ◽  
Bhanudacha Kamolmanit ◽  
Alain Brauman ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Soil Properties ◽  
Carbon Content ◽  
Hevea Brasiliensis ◽  
Organic Chemical ◽  
Organic Carbon Content ◽  
Old Trees ◽  
The Impact

Leaf litter plays a major role in carbon and nutrient cycling, as well as in fueling food webs. The chemical composition of a leaf may directly and indirectly influence decomposition rates by influencing rates of biological reactions and by influencing the accumulation of soil organic carbon content, respectively. This study aimed to assess the impact of the chemical composition of rubber (Hevea brasiliensis (Willd. ex A. Juss.) Muell. Arg.) leaves on various soil properties of different ages of rubber (4–5, 11–12, and 22–23 year-old). Synchrotron-based Fourier transform infrared microspectroscopy (Sr-FTIR) was utilized for analyzing the chemical composition of plant leaves. The Sr-FTIR bands illustrated that the epidermis of rubber leaves from 4–5-year-old trees was found to contain a high quantity of polysaccharides while mesophyll from 22–23-year-old trees had a large number of polysaccharides. The change in soil properties in the older rubber plantation could be attributed to its chemical composition. The change in soil properties across all tree ages, i.e., increased litter and organic carbon content, was a relatively strong driver of soil biota evolution. The aliphatic of C-H in the leaves showed high correlation with soil organic carbon (SOC) and permanganate-oxidizable C (POXC) from 22–23 year-old trees. This study shows the differences in the organic chemical composition of leaves that are consequential to soil organic carbon.

scholarly journals Impacts of Floods on Organic Carbon Concentrations in Alluvial Soils along Hydrological Gradients Using a Digital Elevation Model (DEM)

Water ◽  
2016 ◽  
Vol 8 (5) ◽  
pp. 208 ◽  
Author(s):  
Diane Saint-Laurent ◽  
Roxane Paradis ◽  
Ariane Drouin ◽  
Vernhar Gervais-Beaulac
Keyword(s):  
Organic Carbon ◽  
Digital Elevation Model ◽  
Alluvial Soils ◽  
Digital Elevation ◽  
Elevation Model ◽  
Carbon Concentrations

Dynamics of selected chemical and microbiological properties changes in soils after application of ultra-fine powdered calcium carbonate – incubation studies

2020 ◽  
Author(s):  
Karolina Woźnica ◽  
Michał Gąsiorek ◽  
Justyna Sokołowska ◽  
Agnieszka Józefowska ◽  
Tomasz Zaleski
Keyword(s):  
Calcium Carbonate ◽  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Soil Properties ◽  
Carbon Content ◽  
Buffer Capacity ◽  
Microbial Biomass Carbon ◽  
Soil Samples ◽  
Organic Carbon Content ◽  
Biomass Carbon

<p>Soil acidification is a serious problem on a global scale, about 30% of land surface is occupied by acidic soils (pH≤ 5.5). Recent research indicates, that more than 50% of arable soils in Poland have too low pH. Acid soils are characterised the ability to mobilize toxic metals and increased plant uptake as well as decreased microbial activity in the soil. Progressive acidification leads to degradation of soils and caused that they are marginal for agricultural production. Soil acidification is a naturally occurring process, but only when natural factors are supported by intensive human activity, especially by nitrogen fertilisers application, intensive degradation is observed. Traditionally method to increase soil pH is the application of lime materials e.g. calcite, burnt lime or dolomite. The liming efficiency depends on lime material type (primarily chemical form of calcium compounds), the neutralising value, lime application method, soil properties and the particle size distribution of lime. The aim of this research was to determine the rate of action and influence of ultra-fine powdered calcium carbonate on selected chemical and microbiological soil properties.</p><p>The incubation studies were conducted on the three soils (G1, G2 – silt loam and G3 – sandy loam). Soil samples were taken from the 0-20 cm layer. Soil properties were measured after 7, 14, 30, 60 and 120 days of incubation. The liming factor was ultra-fine powdered calcium carbonate with particle size distribution < 0.08 mm. The application dose was calculated for 0.5 soil hydrolytic acidity. In the soil samples pH<sub>KCl</sub>, buffer capacity, microbial biomass carbon and dissolved organic carbon content were measured.</p><p>Application of lime caused an increase of pH value in all studied soils. The highest increase of the pH<sub>KCl </sub>was noted between 0 to 7<sup>th</sup> day of incubation. Afterward, the pH<sub>KCl </sub>decreased slowly for the soil G1 and G2. However, in the soil G3 significantly decreased just after 7<sup>th</sup> to 14<sup>th </sup>day, and afterward, the pH<sub>KCl</sub> decreased slowly to the end of the incubation period. As a result of liming long-term changes in soil buffer capacity were not noted. The studied soils were characterised by the higher buffer capacity in alkaline than in acidic range. The microbial biomass carbon content was varied during the incubation in all studied soils. The dissolved organic carbon content increased during the incubation, starting from the 7<sup>th</sup> to the 120<sup>th</sup> day of incubation for G2 and G3 soils and from 14<sup>th </sup>to last day of incubation for G1 soil. Application of lime caused an increase of the dissolved organic carbon content in all studied soils. These studies show that application of ultra-fine powdered calcium carbonate is an effective and fast way to improve soil properties.</p>

scholarly journals The Impacts of Vineyard Afforestation on Soil Properties, Water Repellency and Near-Saturated Infiltration in the Little Carpathians Mountains

Water ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 2550
Author(s):  
Andrej Hrabovský ◽  
Pavel Dlapa ◽  
Artemi Cerdà ◽  
Jozef Kollár
Keyword(s):  
Land Use ◽  
Organic Carbon ◽  
Soil Properties ◽  
Carbon Content ◽  
Water Repellency ◽  
Infiltration Rate ◽  
Organic Carbon Content ◽  
Soil Water Repellency ◽  
Infiltration Process ◽  
Vineyard Soils

Vineyards are a 7000-year-old land-use tradition and both management and abandonment have result in altered soil properties. These have a great effect on water resources and soil services, and this inspired our investigation into the effects of land-use and land-use change on soils in the Modra wine-growing region in South-western Slovakia. Ten topsoil samples were taken at each of the seven research sites (n = 70) on granite parent material in cultivated and afforested vineyards and original forest soils. Laboratory analyses included determination of soil texture, organic carbon content, soil pH, and water repellency. This was supplemented by infiltration measurements under near-saturated conditions at the vineyard and afforested study sites. Studied soils have a low clay content and a high proportion of sand. The vineyard soils have significantly higher pH than the forest and afforested soils because the naturally acidic soils have been limed. The forest and afforested soils have similar properties, with higher organic carbon content. This makes them strongly to extremely water repellent and contrasts sharply with the wettability of cultivated vineyard soils. One afforested site, however, was less acidic and therefore was considered transitional between forest and vineyard soils. Our infiltration measurements established the influence of soil water repellency on the infiltration process, and our results highlighted that the infiltration rate in the vineyard soils was significantly higher than in afforested soils. The infiltration rate also gradually increased over time in afforested soils due to decreasing water repellency. Physically impossible negative sorptivity values in afforested soils were noted because of changes in water repellency during the infiltration process. Finally, we conclude that soil afforestation results in increased soil water repellency and a subsequent reduction in the infiltration rate at the matrix scale.

scholarly journals  Influence of terrain attributes and soil properties on soil aggregate stability

2011 ◽  
Vol 6 (No. 3) ◽  
pp. 111-119 ◽  
Author(s):  
T. Zádorová ◽  
O. Jakšík ◽  
R. Kodešová ◽  
V. Penížek
Keyword(s):  
Soil Properties ◽  
Soil Aggregates ◽  
Aggregate Stability ◽  
Structure Stability ◽  
Organic Carbon Content ◽  
Terrain Attributes ◽  
Erosion Processes ◽  
Digital Elevation ◽  
Curvature Index ◽  
Elevation Model

  The study on the relationship between the soil aggregates stability assessed using water stable aggregate (WSA) index and the selected terrain and soil properties was performed on a morphologically diverse study site in Chernozem soil region of Southern Moravia. Soil analyses and detailed digital elevation model processing were the main methods adopted in the study. The soil structure stability is negatively influenced by the soil material removal from the steep parts of the back-slope and re-deposition of the mineral loess material at the base of the slope. The highest aggregates stability was identified in the upper flat parts of the study plot, undisturbed by erosion processes, and at the concave parts of the back-slope with intensive accumulation of organic matter. Statistical analysis showed a significant dependence of aggregates stability on organic carbon content and plan curvature index.

Assessing digital elevation model resolution for soil organic carbon prediction

Geoderma ◽  
2021 ◽  
Vol 398 ◽  
pp. 115106
Author(s):  
A.J. Gibson ◽  
G.R. Hancock ◽  
D. Bretreger ◽  
T. Cox ◽  
J. Hughes ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Digital Elevation Model ◽  
Model Resolution ◽  
Digital Elevation ◽  
Elevation Model ◽  
Digital Elevation Model Resolution

scholarly journals Deciphering the history of forest disturbance and its effects on landforms and soils – lessons from a pit-and-mound locality at Rogowa Kopa, Sudetes, SW Poland

2017 ◽  
Vol 12 (1) ◽  
pp. 59-81 ◽  
Author(s):  
Łukasz Pawlik ◽  
Łukasz Musielok ◽  
Piotr Migoń ◽  
Dominika Wrońska-Wałach ◽  
Filip Duszyński ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Soil Properties ◽  
Carbon Content ◽  
Forest Disturbance ◽  
Abiotic Factors ◽  
Important Variable ◽  
Organic Carbon Content ◽  
Strong Wind ◽  
Sw Poland ◽  
Tree Uprooting

Abstract The historical dimension of pit-and-mound topography has been studied at the Mt Rogowa Kopa locality, Stołowe Mountains, SW Poland. This site represents one of the best developed regional examples of hummocky forest floor relief due to widespread tree uprooting and subsequent degradation of root plates. Through map analysis and dendrochronology the disturbance history was traced to at least the 1930s and, most likely, a strong wind episode from 1933 was the reason for the forest calamity that resulted in the nearly total destruction of the original stand. However, the affected forest was a planted Norway spruce monoculture, introduced and managed until at least the beginning of the 20th century, and not a natural forest. The windthrow niche was then used by beech, whose individuals preferentially chose mounds to grow, conserving the hummocky microtopography. Changes in soil evolutionary pathways brought about by wind-driven disturbance include both haploidisation (rejuvenation) and horizonation (differentiation). Evidence of soil rejuvenation includes a decrease in organic carbon content and an increase in pH in the upper parts of soils developed on mounds relative to the pH of undisturbed references soils. Soil texture was relatively homogenised in pits and mounds. Dating of the pit-and-mound microrelief by means of soil properties (organic carbon content, iron forms) was only partly successful. Although the young age of pits and mounds is evident, the actual age inferred from soil properties was underestimated by a few tens of years. Evaluation of factors potentially controlling the propensity to widespread treethrow suggests that the type of forest is a far more important variable than local abiotic factors of bedrock geology, regolith characteristics, and slope inclination.

scholarly journals Variability of topsoil properties at the southern coast of Finland and the number of  soil samples needed for the estimation of soil properties

1983 ◽  
Vol 55 (2) ◽  
pp. 109-117
Author(s):  
Raili Jokinen
Keyword(s):  
Organic Carbon ◽  
Soil Properties ◽  
Carbon Content ◽  
Field Experiments ◽  
Available P ◽  
Organic Carbon Content ◽  
Plant Available P ◽  
Bray 1 ◽  
Extractable Al

A total of 430 topsoil samples were collected from ten fields of the Viikki Experimental Farm, University of Helsinki. Particle size distribution, organic carbon content, pH(CaCl2), exchangeable Ca, Mg, K contents, plant available P (Bray 1), 1 M KCI extractable (Al+H) content and effective cation exhange capacity of the soils were determined. The coefficient of variation was used as indicator of the variability of soil properties with in each field. The lowest coefficients of variation were observed for pH(CaCl2) and the highest for exchangeable Mg 1 M KCI extractable (Al+H) and effective cation exchange capasity. The results indicate that from 1 (pH(CaCl2)) to 33 (exchangeable Mg) samples per hectare are needed from individual fields for strict level of accuracy in estimation of the soil properties. For determination of soil type (according to clay content) and organic carbon content on average 8 samples, and for the plant available P (Bray 1) and exchangeable Mg and K contents 10 to 16 samples per hectare appear sufficient. Four samples suffice for a less stringent, lax accurate determination of all properties. The variability of soil properties is discussed from the viewpoint of agricultural advisory work and field experiments for agricultural research.

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