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Showing papers in "Geoderma in 2003"


Journal ArticleDOI
01 Nov 2003-Geoderma
TL;DR: The generic framework, which the authors call the scorpanSSPFe (soil spatial prediction function with spatially autocorrelated errors) method, is particularly relevant for those places where soil resource information is limited.

2,527 citations


Journal ArticleDOI
01 May 2003-Geoderma
TL;DR: In this article, the controlling factors for DOM biodegradability can be divided into three groups, namely, intrinsic DOM quality parameters, soil and solution parameters and external factors, and the major obstacle for a better understanding of the controlled properties of DOM is the lack of a standardised methodology or at least systematic comparisons between the large number of methods used to assess DOM bioregradability.

854 citations


Journal ArticleDOI
01 Sep 2003-Geoderma
TL;DR: In this article, the relationship between soil water retention and organic carbon content is investigated and it is shown that the relationship is affected by both proportions of textural components and amount of organic carbon.

795 citations


Journal ArticleDOI
01 May 2003-Geoderma
TL;DR: In this paper, the extent and rate of DOM biodegradation from less humified organic material (straw, litter and fermentation layers of forest floors) were quantified by CO 2 evolution.

763 citations


Journal ArticleDOI
01 May 2003-Geoderma
TL;DR: A review of the literature on the influence of land use and management practices on soil organic matter (DOM) and water-extractable organic matter(WEOM) can be found in this article.

696 citations


Journal ArticleDOI
01 May 2003-Geoderma
TL;DR: In this paper, a protocol for the separate sampling of the different pore spaces is presented, where the results obtained from one DOM source cannot necessarily be extrapolated to the DOM from another source.

574 citations


Journal ArticleDOI
01 Jun 2003-Geoderma
TL;DR: The soil quality concept evolved throughout the 1990s in response to increased global emphasis on sustainable land use and with a holistic focus emphasizing that sustainable soil management requires more than soil erosion control.

480 citations


Journal ArticleDOI
01 Sep 2003-Geoderma
TL;DR: In this paper, a review of indices and methods used to quantify the effects of compaction on soil physical properties and crop growth is provided, with consideration of spatial variability, including soil strength, oxygen, water, heat and structural arrangement.

441 citations


Journal ArticleDOI
01 May 2003-Geoderma
TL;DR: In this article, the authors present a case study where they relate the yearly retention of dissolved organic carbon (DOC) in the mineral soil to the available sorption capacity of seven forest soils and estimate that the saturation of the sorption complex would occur within 4-30 years.

402 citations


Journal ArticleDOI
01 Jun 2003-Geoderma
TL;DR: In this article, the fertility capability soil classification (FCC) system is introduced for the tropics and the main changes are to include the former h condition modifier (acid, but not Al-toxic) with "no major chemical limitations" and to introduce a new condition modifier m that denotes organic carbon saturation deficit.

324 citations


Journal ArticleDOI
01 Jul 2003-Geoderma
TL;DR: In this paper, the spatial and temporal variability of soil properties and changes of soil quality in a hill region of subtropical China using geostatistical methods were studied. But the results of the study were limited.

Journal ArticleDOI
01 Apr 2003-Geoderma
TL;DR: In this paper, points of zero charge were determined on two highly weathered surface soils from Puerto Rico, an Oxisol and Ultisol, as well as mineral-standard kaolinite and synthetic goethite using three methods: (1) potentiometric titration measuring the adsorption of H+ and OH− on amphoteric surfaces in solutions of varying ionic strength (I) (point of zero salt effect), (2) direct assessment of surface charges via nonspecific ion adsorptions via non-specific ion adaption as a function of pH and

Journal ArticleDOI
01 Oct 2003-Geoderma
TL;DR: The EuroOSOIL (E)-HAs were characterized for their compositional, structural, and functional properties by using chemical methods and spectroscopic techniques, including Fourier transform infrared (FT IR), nuclear magnetic resonance, fluorescence, and electron spin resonance as discussed by the authors.

Journal ArticleDOI
01 Jun 2003-Geoderma
TL;DR: In this paper, the authors describe the responses of soil carbon and nitrogen dynamics, microbial biomass, and microbial community structure to a tillage event in intensively managed vegetable crop systems in California.

Journal ArticleDOI
01 May 2003-Geoderma
TL;DR: In this article, the authors evaluated the quantity and biodegradability of soluble organic matter in soil under monoculture maize or maize−soybean rotation, and different amendments: manure, inorganic fertilizer, or no amendment.

Journal ArticleDOI
01 Jul 2003-Geoderma
TL;DR: In this article, 150 soil samples from 20 urban and 3 non-urban soil profiles in Nanjing were analyzed for total concentrations of Cu, Zn, Pb and Cr using ICP spectrometry.

Journal ArticleDOI
01 May 2003-Geoderma
TL;DR: In this paper, the authors suggest that the following three questions would prove fruitful for future research on dissolved organic matter (DOM) in soils: (1) How large are various sources and sinks and how are they controlled? (2) What is the ecological significance of dissolved organic nitrogen (DON) in comparison to dissolved organic carbon (DOC)? (3) How are fluxes altered in human-dominated environments?

Journal ArticleDOI
01 Sep 2003-Geoderma
TL;DR: In this paper, the effects of crop residue management, macropore development and management interactions with natural sources of variability, such as topography, are addressed, along with initial attempts to predict their effects on hydraulic properties.

Journal ArticleDOI
01 Apr 2003-Geoderma
TL;DR: In this paper, the physical, chemical, and mineralogical properties of soils collected 2 years after prescribed pile and windrow burning treatments of clearcut forest site in the central interior of British Columbia were investigated.

Journal ArticleDOI
01 May 2003-Geoderma
TL;DR: In this article, both analytical and computational approaches were used to determine the free metal ion (FMI) concentration, and the recently developed Donnan Membrane Technique (DMT) succeeded in measuring the FMI concentration.

Journal ArticleDOI
01 Feb 2003-Geoderma
TL;DR: In this article, the authors define ethnopedology as a hybrid discipline nurtured by natural as well as social sciences, which encompasses the soil and land knowledge systems of rural populations, from the most traditional to the modern.

Journal ArticleDOI
01 Oct 2003-Geoderma
TL;DR: In this article, the authors investigated the impact of the use of magic angle spinning on the resolution of the CPMAS 13C NMR spectra and the chemical composition of the SOM in the A and B horizons of four Brazilian Ferralsols.

Journal ArticleDOI
01 Jan 2003-Geoderma
TL;DR: In this paper, chemical methods and solid-state 13C NMR spectroscopy were used to determine structural chemistry of soil organic matter at the Hubbard Brook Experimental Forest in New Hampshire, USA.

Journal ArticleDOI
01 Jun 2003-Geoderma
TL;DR: Compared the composition of microbial communities in 47 agricultural soil and adjacent land use samples collected in the San Joaquin Valley, CA, there is tremendous unexplained diversity within agricultural soil microbial communities.

Journal ArticleDOI
01 Jan 2003-Geoderma
TL;DR: In this paper, the effects of land use on soil properties in a typical watershed in the northwestern highland of Ethiopia were analyzed for a range of soil properties, including soil organic matter (SOM) and total N contents.

Journal ArticleDOI
01 Jun 2003-Geoderma
TL;DR: In this paper, a mobile EM induction survey was conducted in 1999, with bulk soil electrical conductivity (ECa) readings taken at 384 geo-referenced locations, followed by an intensive mobile fixed-array survey with a total of 7288 geo-reference ECa readings.

Journal ArticleDOI
01 Mar 2003-Geoderma
TL;DR: In this article, two techniques for spatio-temporal (ST) kriging of soil water content are compared and it is shown that the behaviour of the soil water contents predictions is physically more realistic when using spatiotemporal Kriging with external drift, also the prediction uncertainties are slightly smaller.

Journal ArticleDOI
01 May 2003-Geoderma
TL;DR: In this article, the authors determined the distribution of Al, Fe, Fe(II) and Fe(III) over dissolved free metal, dissolved metal-DOM complexes and metal precipitates as influenced by solution pH, redox potential and metal/organic carbon (M/C) ratios.

Journal ArticleDOI
01 Sep 2003-Geoderma
TL;DR: In this paper, a tension infiltrometer was used to measure unconfined, unsaturated infiltration over a range of supply pressure heads (nominally, h=−150, −100, −50, and −5 mm H2O) at the soil surface.

Journal ArticleDOI
01 Jul 2003-Geoderma
TL;DR: In this article, the authors investigated the microbial biomass, activity and substrate utilization pattern of seven Chinese paddy soils with different heavy metal concentrations in the vicinity of a Cu-Zn smelter.