Showing papers in "Geoderma in 2004"

TL;DR: In this article, the authors proposed a sustainable management of soil organic carbon (SOC) pool through conservation tillage with cover crops and crop residue mulch, nutrient cycling including the use of compost and manure, and other management practices.

TL;DR: In this paper, a soil physical parameter, S, is defined, which is equal to the slope of the soil water retention curve at its inflection point and is used as an index of soil physical quality that enables different soils and the effects of different management treatments and conditions to be compared directly.

TL;DR: In this paper, a methodological framework for spatial prediction based on regression-kriging is described and compared with ordinary kriging and plain regression, which can adopt both continuous and categorical soil variables in a semi-automated or automated manner.

TL;DR: In this article, technical and economically viable potentials for carbon sequestration in the agricultural soils of Europe by 2008-2012 are analysed against a business-as-usual scenario, and the authors provide a quantitative estimation of the carbon absorption potential per hectare and the surface of agricultural land that is available and suitable for the implementation of those measures, their environmental effects as well as the effects on farm income.

TL;DR: The transfer of trace elements within the soil-plant chain is a part of the biochemical cycling of chemical elements, it is an element flow from nonliving to the living compartments of the biosphere as mentioned in this paper.

TL;DR: In this paper, the use of green plants as a remediation tool in environmental cleanup has also offered some potential, and case studies using lime, phosphate and biosolid amendments have demonstrated, under field conditions, enhanced natural remediation resulting in substantially improved vegetation growth, invigorated microbial population and diversity, and reduced offsite metal transport.

TL;DR: This contribution will outline selected microbiological processes which are of significance in determining metal mobility and which have actual and potential application in bioremediation of metal pollution.

TL;DR: In this article, the authors examined the wettability and stability of air-dry aggregates and their size fractions ( 30-year-old Aleppo pine {Pinus halepensis} and associated shrub community), geology (limestone), soil type (Lithic Xerorthents), slope angle and aspect (5-8°SW), included were three sites (A, B, C) burned, respectively, in 1998, 1999 and 2000, and one unburnt for >30 years (D).

TL;DR: In this paper, the authors proposed the S-theory, which is a measure of the micro-structural porosity of the soil, and applied it to the unsaturated hydraulic conductivity of soil.

TL;DR: Oxygen isotope compositions of precipitation and soil water from profiles at six sites near Hanover, NH reveal information about rates and mechanisms of soil water movement as mentioned in this paper, and the observed soil water processes may have significant effects on plant water use.

TL;DR: In this paper, the authors measured the accumulation, distribution and fractionation of copper in contaminated and uncontaminated soils as a step towards understanding copper existence in soils and its potential for availability to flora and fauna.

TL;DR: In this paper, the characteristics and spatial differences of soil properties in a lowland evergreen broad-leaved rain forest in southern Taiwan, and to clarify the relationships between soil properties and the landscape were examined.

TL;DR: In this paper, the authors examined the present degree and spatial distribution of heavy metal concentrations in 51 soil profiles and in 22 topsoil samples in the Damascus Ghouta, an area with intensive agricultural production.

TL;DR: The presented model is capable of modelling fundamental land elements that can be utilized in soil–landscape modelling and in other applications in land resource management.

TL;DR: In this article, the authors exploit dye patterns to identify flow types in macroporous soils as a step forward from using dye patterns simply as qualitative pictures that illustrate preferential flow, and classify stained areas into three classes of dye concentration.

TL;DR: In this paper, a total of 191 soil samples, taken in 1964 from grassland of southeastern Ireland, and 220 samples taken in 1996 from the same area, were examined for soil organic carbon (SOC) and the results of a t-test showed that the difference between them was not significant.

TL;DR: The index of soil physical quality, S, which was introduced in Part I is applied to problems of agricultural soil mechanics, especially soil tillage and hard-setting as discussed by the authors, is shown to be linearly and positively correlated with S. S is equal to the slope of the water retention curve at its inflection point.

TL;DR: In this paper, a spectral reflectance (SR)-based methodology was developed to evaluate soil types and soil tillage systems, which can be used as a methodology to assist soil surveys.

TL;DR: In this article, the results of batch equilibrium experiments (generating sorption isotherms) and kinetics sorption studies were performed using single and binary metal solutions in surface samples of four soils from central Spain.

TL;DR: In this paper, the relationship between surface soil organic carbon pool (SOCP) and site variables (soil taxon, texture, drainage class, slope gradient and elevation) under cropland, grassland and forestland in Ohio, USA.

TL;DR: In this paper, the relation between the content of polycyclic aromatic hydrocarbons (PAHs) and enzymatic activity (dehydrogenase, phosphatase, urease and protease) was evaluated in soils collected from the area of a military airfield in Deblin (SE Poland).

TL;DR: A soil incubation experiment lasting 6 months was carried out to ascertain the effects of tobacco dust, mushroom compost, and grape marc, which contain high organic matter, on the extractable cadmium, copper, nickel, and zinc in soil.

TL;DR: In this paper, soil carbon and total N stocks were investigated in five vegetation types and following deforestation and conversion of each vegetation types into arable lands along a 37-km elevation transect in southern highlands of Ethiopia.

TL;DR: In this article, the fractal dimension of the PSD is derived to characterize the patterns of PSD and the relationships between fractal dimensions and selected soil properties are discussed, and it is shown that fractal parameters are useful parameters able to monitor soil degradation and to estimate the degree of soil desertification.

TL;DR: In this article, a representative value of the organic carbon density for each unit was determined from 3391 soil profiles obtained in a nationwide soil survey, and the estimated total organic carbon stock in the forest soils of Japan was 4570±500 Tg (1 Tg=1012 g) in the first 1 m (±95% confidence limit), excluding carbon held in the surface organic horizons and buried horizons.

TL;DR: A field study was conducted in Puerto Rico to evaluate the impact of compost on soil quality and crop production in an ultisol as discussed by the authors, in particular, the effect of composting on the quality of soil organic mater (SOM) was investigated.

TL;DR: In this article, the trace element contents of pristine Cerrado soils were analyzed by X-ray fluorescence analysis. And the results showed that trace elements that accumulated during pedogenic weathering are either pentavalent (Nb5+), tetravalent (Ti4+, Zr4+, U4+, Th4+), or trivalent or monovalent (Sc3+, V3+, Cr3+, Ga3+, Y3+, La3+, Nb, and Pb2+) at the acid pH of these soils.

TL;DR: In this article, the cumulative and residual, long-term (9 years) effects of amendment with municipal solid waste compost (MWC) used at rates of 20 and 80 t ha−1 on the chemical, structural and functional properties of soil humic acids (HAs) were evaluated.

TL;DR: In this paper, the authors characterized Brazilian humic acids (HAs) from an Oxisol under different treatments: conventional tillage/maize-bare fallow (CT1), conventional tilings/rotations with soybean-bare-fallow, no-till/mica-cajanus (NT3), and no cultivated soil under natural vegetation (NC).

TL;DR: In this article, the concentrations of 57 elements in 514 soil samples collected from 78 sampling sites throughout Japan were determined, and the elemental composition of Japanese soils were discussed, with special reference to differences among soil groups and the influence of agricultural activity.