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Sorption of organic matter (OM) onto soil minerals affects OM dynamics, and is strongly controlled by mineral surface properties. Moreover, the degree and mechanism of interaction between different minerals may influence their surface reactivity. We therefore aimed to understand mineral surface modifications brought about by different Fe (hydr)oxide–vermiculite associations, and their influence on...
Near-infrared reflectance (NIR) spectroscopic detection of soil organic carbon (SOC) is an alternative to more resource-intensive methods. However, interrelated impacts from specific soil characteristics on NIR performance are not well understood. To address this, a population of artificial soils was created based on several primary soil characteristics, and a single optimized NIR model's predictive...
In the last decade, legislative incentives have led to a significant increase in maize cultivation for the generation of energy from biomass in Germany. The expansion of maize acreage resulted in an increased risk of water erosion due to the low vegetative soil cover after the seeding of the maize and the linear structure and great distance of the maize rows. Soil erosion is considered a major threat...
Peatlands store large amounts of soil organic carbon (SOC). Depending on their present condition, they act as a source or sink of carbon dioxide. Therefore, peatlands are highly relevant for climate change investigations and there is considerable interest to assess spatial heterogeneity of peat soil properties in order to assess the total amount of stored carbon. However, reliable information about...
The Land Use and Cover Area frame Statistical survey (LUCAS) aimed at the collecting harmonised data about the state of land use/cover over the extent of European Union (EU). Among these 2·105 land use/cover observations selected for validation, a topsoil survey was conducted at about 10% of these sites. Topsoil sampling locations were selected as to be representative of European landscape using a...
Large gullies which occur globally affect greatly ecohydrological processes in gullied landscape. However, the effects of large gullies on spatial behaviors of soil moisture, a critical ecohydrological variable, at catchment scale are poorly understood. To this end, we conducted spatially intensive soil moisture measurements in the 0–60cm during the spring, summer and fall of 2010 in the Yuanzegou...
There is a need for soil C assessment in the soils of tropical and subtropical areas. We have aimed to quantify the spatial extent of SOC concentration and stocks under different land use and soil types in an 8118ha area in southern Brazil. Common soils are Inceptisols, Ultisols and Mollisols, and the dominant land use is forest and vineyard. SOC data were modeled by 5 depths deriving values from...
Due to the role of soils in the global carbon cycle, there is increasing demand for data on soil organic carbon (SOC) stock, but the conventional determination of SOC stock (SSOC) is tedious and hardly allows meeting this demand. Visible and near infrared diffuse reflectance spectroscopy (VNIRS) is a time- and cost-effective approach that has been successfully used for characterizing SOC concentration,...
African tropical forests are thought to play an important role in global carbon sequestration. However, the increasing rate of deforestation and the impact of changes in land use require a critical and updated look at what is happening. This work emphasizes the role of bulk density as a main driver in carbon (C) and nitrogen (N) stock in four land-use categories: natural forest, tree plantations,...
Soil may fail in a number of ways during tilling, depending on soil conditions and the type of implement. The present paper investigates soil structures and several soil physical and mechanical properties associated with different failure patterns in two agricultural soils (upland and paddy). The dry bulk density, soil cohesion, internal friction angle, and cone index decreased remarkably after brittle...
Methodologies used for identifying, assessing and mapping ecosystem services are diverse and frequently inconsistent and notwithstanding the examples from available literature evident methodological gaps are still present. This paper presents an indicator based approach to assessing and mapping the multiple contributions of soil to the delivery of ecosystem services, based on soil functions as derived...
Testing reliability of the saturated soil hydraulic conductivity, Ks, estimated by applying the steady-state single-ring (SR) model to the quasi steady-state infiltration rates obtained with a single-ring pressure infiltrometer (PI) increases confidence in the estimated Ks values. Determining a means to estimate Ks from infiltration data collected with a square infiltrometer allows the use of sources...
Mediterranean ecosystems are commonly vulnerable to wildfires. Accelerated erosion processes due to wildfires in those environments constitute a major restrictive factor in their sustainability. This study aims at evaluating the use of the Revised Universal Soil Loss Equation (RUSLE) and the Pan-European Soil Erosion Risk Assessment (PESERA) models in predicting the changes in spatial variability...
Forty-three soils (130 horizons), sampled by the geo-pedological mission organized by the State University of Gent (Belgium) in 1962 on Isla Santa Cruz (Galápagos Islands), were analysed in order to determine their degree of chemical evolution. Several weathering indices (Weathering Index of Parker – WIP –, Chemical Index of Alteration – CIA –, Chemical Index of Weathering – CIW –, Plagioclase Index...
In large heterogeneous areas the relationship between soil organic carbon (SOC) and environmental covariates may vary throughout the area, bringing about difficulty for accurate modeling of the regional SOC variation. The benefit of local, geographically weighted regression (GWR) coefficients was tested in a case study on soil organic carbon mapping across a 50,810km2 area in northwestern China. This...
The study focused on the variability in properties and pedogenesis of soils located at post mining sites in the old industrial area in the Silesian-Krakow Upland, southern Poland. The investigated sites were comparable in terms of Zn–Pb mining history, soil texture and climate, but differed in duration of pedogenesis, which started after the waste materials were accumulated and covered 30, 70, 100...
Riparian areas are highly dynamic systems where the control of soil pollution might be particularly challenging. Limited accessibility to river banks and bed sediments makes reclamation operations particularly difficult in these topographical positions, in comparison to floodplains. This usually leads to the large-scale spread of pollutants following pollution episodes in riparian areas. Here, we...
Uptake of trace metals by crops is determined by the solubility of trace metals. In paddy soils, flooding and drainage influence redox chemistry and consequently trace metal solubility and thus uptake by rice plants. Current knowledge on how the dynamics in redox chemistry affect the solubility of trace metals in contaminated paddy soils is still limited. The objectives of our study were to investigate...
The time over which a soil has developed since the parent materials were deposited and subaerially exposed, referred to here as soil development time, is of considerable interest to pedologists, geomorphologists, geologists, archeologist, and paleoclimatologists. Soil development time has been estimated both indirectly, based on the degree of soil development, and directly, by radiocarbon dating of...
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