Showing papers in "Geoderma in 2014"

TL;DR: Soil security, an overarching concept of soil motivated by sustainable development, is concerned with the maintenance and improvement of the global soil resource to produce food, fibre and fresh water, contribute to energy and climate sustainability, and to maintain the biodiversity and the overall protection of the ecosystem as mentioned in this paper.

TL;DR: In this article, a series of heavy metals were quantified in 132 agricultural soils of Argolida basin, Pelopon-nese, Greece, with the aim to characterize their accumulation patterns.

TL;DR: Electromagnetic induction (EMI) has been used to characterize the spatial variability of soil properties since the late 1970s as mentioned in this paper, which can provide a more complete characterization of the spatial variations in soil properties than traditional sampling techniques.

TL;DR: In this article, the biochar (BC) was used to reduce clay soil erosion by improving aggregate stability and reducing the loss of dissolved phosphorus in the runoff water, which can lead to enrichment of P in the uppermost soil layers.

TL;DR: In this paper, the authors used VIS-NIR diffuse reflectance and DRIFT (diffuse reflectance infrared Fourier transform in the mid-infrared range, MIR) spectroscopy to determine a series of chemical and biological soil properties.

TL;DR: In this article, the authors evaluate the application of a Random Forest (RF) classifier as a tool for understanding and predicting the complex hierarchical relationships between soil parent material and topography using a digital elevation model (DEM) and conventional soil survey maps.

TL;DR: In this paper, ground and remote sensing data were used to determine if any existing vegetation and soil salinity indices could be used to assess the soil saliency of communities vegetated with date palm.

TL;DR: In this paper, the vertical and lateral variation of soil salinity (measured as electrical conductivity in saturation paste, ECe) using a combination of regression tree analysis and equal-area smoothing splines in a 72,000-ha area located in central Iran was modelled.

TL;DR: In this article, in situ immobilization field experiments were conducted by planting rice (Oryza sativa L.) in Cd contaminated paddy soil to determine the optimal remediation mode that would reduce the accumulation of Cd in brown grain.

TL;DR: In this article, the authors summarized the trends in soil physicochemical property evolution following reclamation in salt marshes from around the world, and identified priority areas of future research on CRS.

TL;DR: In this article, the performance of a combination of partial least squares regression with genetic algorithm (GA-PLSR) against a general PLSR for predicting low concentrations of four heavy metals (i.e., As, Pb, Zn and Cu) in agricultural soils using visible and near-infrared (VNIR) reflectance spectroscopy coupled with calibration techniques.

TL;DR: In this paper, the authors show that applying biochar to a Midwestern Mollisol could improve soil quality and plant nutrient availability because of the carbon it supplies and its conditioning effect.

TL;DR: In this article, the vertical distribution of chromium (Cr), copper (Cu), and zinc (Zn) in seven floodplain soil profiles in relation to flooding conditions and relevant soil properties was determined.

TL;DR: In this paper, a tropical soil planted to rice was investigated under different N management [i.e., urea-N, rice straw (RS) (30.kg n ha −1 ), compost (C), poultry manure (PM) (20.5 kg n n −1 )−urea-N (90 kg n−1 ), etc.

TL;DR: In this article, the authors reviewed how proximal soil sensing and other tools can be used in soil profile descriptions where techniques and toolkits have not changed in the past decades and compared the application of such tools to standard soil profile description for 11 common attri- butes: horizons, texture, color, structure, moisture, mottles, consistence, carbonates, rock fragments, pores and roots.

TL;DR: In this paper, the most appropriate scoring function (linear or non-linear) and integrating procedure (additive and weighted additive) for a soil quality index for typical temperate, maritime grassland management (e.g. livestock grazing and silage production) was determined.

TL;DR: In this paper, the ability of different phyllosilicates to protect soil organic carbon (SOC) from microbial decomposition has been investigated and compared in a limited number of soils.

TL;DR: In this paper, the influence of biochar on the physical properties of soil with respect to quantified soil variables was investigated. But relatively little data exists on this topic, especially in relation to soil type or characteristics.

TL;DR: In this article, the authors investigated the long-term effects of fertilizer and manure application on the distribution of water stable aggregates in the soil and the amount of total soil organic carbon (TOC), total N and C/N ratio in different aggregate fractions.

TL;DR: In this paper, the authors used a data mining tool, Cubist, to build rule-based predictive models and predict SOC content and soil bulk density from a calibration dataset at 8 standard layers (0 to 7.5 cm, 15 to 30 cm, 30 to 45 cm, 45 to 60 cm, 60 to 75 cm, 75 to 90 cm and 90 to 105 cm).

TL;DR: In this article, the authors developed an approach called "Disaggregation and Harmonization of Soil Map Units Through Resampled Classification Trees" (DSMART), which samples the polygons of a legacy soil map and uses classification trees to generate a number of realisations of the potential soil class distribution.

TL;DR: In this article, the authors evaluated the long-term effects of no-tillage and conventional tillage practices on soil organic carbon and its fractions at different depths ranging from 0 to 60 cm in Shanxi, China.

TL;DR: In this article, the authors assessed soil quality in global rice production areas with the Fertility Capability Soil Classification (FCC) system adjusted to match the harmonized world soil database, established by the Food and Agriculture Organization and the International Institute for Applied Systems Analysis.

TL;DR: In this paper, different biochar types and addition rates to soil were evaluated and the results indicated that different biochars induced different chemical changes such as increased pH, dissolved organic carbon and total carbon and nitrogen in soil and changed the microbial community structure.

TL;DR: In this paper, the use of portable X-ray fluorescence (PXRF) spectrometry for pH determination was investigated using elemental data as a proxy for soil pH, and two datasets representing a wide variety of soil pH (4.17-8.70) were first evaluated via PXRF followed by standard laboratory techniques.

TL;DR: In this article, the effect of biochar and pesticides (2,4-D and dicamba) on the enzymatic activity and ecotoxicity of soils was investigated. But the results were limited to a single field experiment, where biochar was applied to soil at two doses, 30 and 45 t/ha.

TL;DR: In this article, the authors investigated what is known about organic P in pasture/grassland soils used for agriculture, as well as the research needed to utilise organic P for sustainable plant production.

TL;DR: In this paper, the authors examined the presence and nature of aggregate hierarchy in the surface horizon of an Andisol which is characterized by high concentrations of organic matter and SRO minerals (esp. allophane/imogolite). Several pretreatments were tested to achieve maximum dispersion and the particle-size fractions isolated ( ǫ) were characterized by SEM, XRD, and elemental analyses.

TL;DR: In this paper, the authors investigated carbon, nitrogen storage, plant community alterations and other soil chemical and physical properties regarding artificial grasslands with different restoration years and native grassland with different degradation levels and found that artificial grassland establishment significantly increased above and belowground biomass, but the richness, diversity and evenness indexes had a decreasing trend compared with extremely degraded grasslands.

TL;DR: Wang et al. as mentioned in this paper investigated seasonal and spatial changes of soil salinity in a Delta Oasis between the Werigan and Kuqa River in the northern rim of Tarim Basin, Xinjiang, China.