Geostatistical Prediction and Simulation of the Lateral and Vertical Extent of Soil Horizons

2006 ◽  
pp. 223-241
Author(s):  
Benjamin Warr ◽  
Inakwu O. A. Odeh ◽  
Margaret A. Oliver
Keyword(s):  
Soil Horizons ◽  
Vertical Extent ◽  
Geostatistical Prediction ◽  
Prediction And Simulation

Geostatistical prediction and simulation of European soil property maps

2016 ◽  
Vol 7 (2) ◽  
pp. 201-215 ◽  
Author(s):  
Gerard B.M. Heuvelink ◽  
Johannes Kros ◽  
Gert Jan Reinds ◽  
Wim De Vries
Keyword(s):  
Soil Property ◽  
Geostatistical Prediction ◽  
Prediction And Simulation

Horizontal homogeneity and vertical extent of new particle formation events

Tellus B ◽  
2007 ◽  
Vol 59 (3) ◽  
Author(s):  
Birgit Wehner ◽  
Holger Siebert ◽  
Frank Stratmann ◽  
Thomas Tuch ◽  
Alfred Wiedensohler ◽  
...  
Keyword(s):  
Particle Formation ◽  
New Particle Formation ◽  
Vertical Extent

AN ANALYSIS OF PUMICE-BEARING SOIL HORIZONS NEAR PROSPECT, OREGON: IMPLICATIONS OF POTENTIAL TRANSPORT FROM MT. MAZAMA

2018 ◽  
Author(s):  
Bill Sweidan ◽  
◽  
Stephen Crabtree ◽  
Justin Chute ◽  
Jordan Dahle
Keyword(s):  
Soil Horizons

Robust geostatistical prediction of trace elements across France

Geoderma ◽  
2011 ◽  
Vol 162 (3-4) ◽  
pp. 303-311 ◽  
Author(s):  
N.P.A. Saby ◽  
B.P. Marchant ◽  
R.M. Lark ◽  
C.C. Jolivet ◽  
D. Arrouays
Keyword(s):  
Trace Elements ◽  
Geostatistical Prediction

SOIL MORPHOLOGY AND SOIL PHYSICAL PROPERTIES. I. SOIL AERATION

1972 ◽  
Vol 52 (3) ◽  
pp. 311-321 ◽  
Author(s):  
K. W. AYRES ◽  
R. G. BUTTON ◽  
E. DE JONG
Keyword(s):  
Soil Structure ◽  
Regression Coefficient ◽  
The Other ◽  
Soil Morphology ◽  
Soil Horizons ◽  
Undisturbed Soil ◽  
Soil Aeration ◽  
Structural Types ◽  
Highly Correlated ◽  
Undisturbed Soil Cores

The relation between soil structure and soil aeration was investigated on undisturbed soil cores from soil horizons exhibiting six distinct kinds of soil structure (prismatic, columnar, blocky, granular, platy, massive) over a broad range of soil texture. Soil aeration was characterized at ⅓ atm suction by measurements of air porosity, relative diffusivity (D/Do) and the rate of oxygen diffusion to a platinum microelectrode (ODR). Aeration was adequate in most of the Chernozemic soil horizons studied; however, aeration in many of the Bnt horizons of the Solonetzic soils was inadequate. Air porosity and D/Do were highly correlated. The regression coefficient for D/Do vs. air porosity for blocky structures was significantly different from that found for the other five structural types. For granular structures a negative correlation was found for ODR vs. air porosity compared with a low positive correlation found for the other structure types.

scholarly journals Spectral signatures of soil horizons and soil orders – An exploratory study of 270 soil profiles

Geoderma ◽  
2021 ◽  
Vol 389 ◽  
pp. 114961
Author(s):  
Yakun Zhang ◽  
Alfred E. Hartemink ◽  
Jingyi Huang
Keyword(s):  
Exploratory Study ◽  
Soil Profiles ◽  
Soil Horizons ◽  
Spectral Signatures

scholarly journals Current, steady-state and historical weathering rates of base cations at two forest sites in northern and southern Sweden: a comparison of three methods

2020 ◽  
Vol 17 (2) ◽  
pp. 281-304 ◽  
Author(s):  
Sophie Casetou-Gustafson ◽  
Harald Grip ◽  
Stephen Hillier ◽  
Sune Linder ◽  
Bengt A. Olsson ◽  
...  
Keyword(s):  
Steady State ◽  
Soil Depth ◽  
Base Cations ◽  
Base Cation ◽  
Mineral Weathering ◽  
Soil Horizon ◽  
Soil Horizons ◽  
Weathering Rate ◽  
Weathering Rates ◽  
Forest Sites

Abstract. Reliable and accurate methods for estimating soil mineral weathering rates are required tools in evaluating the sustainability of increased harvesting of forest biomass and assessments of critical loads of acidity. A variety of methods that differ in concept, temporal and spatial scale, and data requirements are available for measuring weathering rates. In this study, causes of discrepancies in weathering rates between methods were analysed and were classified as being either conceptual (inevitable) or random. The release rates of base cations (BCs; Ca, Mg, K, Na) by weathering were estimated in podzolised glacial tills at two experimental forest sites, Asa and Flakaliden, in southern and northern Sweden, respectively. Three different methods were used: (i) historical weathering since deglaciation estimated by the depletion method, using Zr as the assumed inert reference; (ii) steady-state weathering rate estimated with the PROFILE model, based on quantitative analysis of soil mineralogy; and (iii) BC budget at stand scale, using measured deposition, leaching and changes in base cation stocks in biomass and soil over a period of 12 years. In the 0–50 cm soil horizon historical weathering of BCs was 10.6 and 34.1 mmolc m−2 yr−1, at Asa and Flakaliden, respectively. Corresponding values of PROFILE weathering rates were 37.1 and 42.7 mmolc m−2 yr−1. The PROFILE results indicated that steady-state weathering rate increased with soil depth as a function of exposed mineral surface area, reaching a maximum rate at 80 cm (Asa) and 60 cm (Flakaliden). In contrast, the depletion method indicated that the largest postglacial losses were in upper soil horizons, particularly at Flakaliden. With the exception of Mg and Ca in shallow soil horizons, PROFILE produced higher weathering rates than the depletion method, particularly of K and Na in deeper soil horizons. The lower weathering rates of the depletion method were partly explained by natural and anthropogenic variability in Zr gradients. The base cation budget approach produced significantly higher weathering rates of BCs, 134.6 mmolc m−2 yr−1 at Asa and 73.2 mmolc m−2 yr−1 at Flakaliden, due to high rates estimated for the nutrient elements Ca, Mg and K, whereas weathering rates were lower and similar to those for the depletion method (6.6 and 2.2 mmolc m−2 yr−1 at Asa and Flakaliden). The large discrepancy in weathering rates for Ca, Mg and K between the base cation budget approach and the other methods suggests additional sources for tree uptake in the soil not captured by measurements.

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