Soil-Landscape Relationships in Virginia: I. Soil Variability and Parent Material Uniformity

1993 ◽  
Vol 57 (2) ◽  
pp. 414-421 ◽  
Author(s):  
M. H. Stolt ◽  
J. C. Baker ◽  
T. W. Simpson
Keyword(s):  
Parent Material ◽  
Soil Variability ◽  
Soil Landscape ◽  
Material Uniformity

scholarly journals Soil-Landscape Relationship in the Northern Volcanic Mountain of Leyte, Philippines

2017 ◽  
pp. 87-104
Author(s):  
Roland Rallos ◽  
Victor Asio ◽  
Faustino Villamayor
Keyword(s):  
Sustainable Management ◽  
Crop Production ◽  
Chemical Properties ◽  
Parent Material ◽  
Landscape Position ◽  
Soil Landscape ◽  
Physical And Chemical ◽  
The Relationship ◽  
Unstable Position ◽  
And Chemical Properties

Studies on soil-landscape relationships are necessary to improve our understanding of the spatial distribution and variation of soils for their sustainable management. This study evaluated the relationship between soil properties and landscape position in the northern volcanic mountain of Leyte, Philippines. Five soil profiles located on summit, shoulder, backslope and footslope positions were evaluated. Findings revealed that the degree of soil development as well as the soil morphophysical and chemical properties varied with landscape position. The soil in the most stable position (summit) had thicker solum and slightly more developed soil profile than the soils in other landscape positions. On the other hand, soils in the unstable position (backslope) generally had thinner solum. All the five soils also revealed the influence of the andesitic volcanic parent material on their properties. They all showed some properties typical of Andisols such as low bulk density and high pH in NaF although they were classified as Andic Dystrudept. The soils all possessed physical and chemical constraints for crop production.

Soil - landscape relationships of downlands soils formed from loess, eastern South Island, New Zealand

Soil Research ◽  
1997 ◽  
Vol 35 (4) ◽  
pp. 827 ◽  
Author(s):  
T. H. Webb ◽  
S. J. Burgham
Keyword(s):  
Land Use ◽  
Morphological Data ◽  
Soil Variability ◽  
Soil Morphology ◽  
Soil Series ◽  
Potential Productivity ◽  
Soil Material ◽  
Landscape Models ◽  
Reducing Conditions ◽  
Soil Landscape

The Timaru and Claremont soil series occupy >145 000 ha of loess-mantled downlands of the South Island. The soils are mapped in large map delineations and the accompanying soil reports provide very generalised descriptions and definitions of the units. Almost no information is recorded on the nature and causes of soil variability. In this study soil variability is described along transects at 12 locations. The sites selected encompass a range of aspect (sunny and shady), topography (easy rolling to strongly rolling terrain), and land use (non-ploughed, pastoral, and mixed cropping). The definitions of the Timaru and Claremont series are refined and the variability in soil morphology is related to landscape features. Morphological data from the transects are collated into generalised soil–landscape models. Similar arrays of soils occur within the Timaru and Claremont soil–landscape models. The models vary mainly in the occurrence and depth to reducing conditions. The soil–landscape models provide a framework within which to derive soil attribute values for use in predictive models and land-use interpretations, and provide a baseline from which future studies may assess the impacts of land-use practices. In both soil series, the thickness of topsoils, depth to reducing conditions, and depth to fragipans are greatest on footslopes and generally decrease to shoulderslopes. Penetration resistance is lowest on footslopes and increases to shoulderslopes. In cultivated land, footslope sites have markedly over-thickened topsoils. Relocation of topsoil material from upper to lower slopes is attributed mainly to the effects of cultivation, either directly, through mechanical movement of soil material during cultivation operations, or indirectly, through the promotion of soil erosion. Variations in depth of soil materials are expected to have attendant affects on potential productivity.

Parent material uniformity and degree of weathering in a soil chronosequence, northwestern Italy

CATENA ◽  
1988 ◽  
Vol 15 (6) ◽  
pp. 507-517 ◽  
Author(s):  
F. Ajmone Marsan ◽  
D.C. Bain ◽  
D.M.L. Duthie
Keyword(s):  
Parent Material ◽  
Soil Chronosequence ◽  
Material Uniformity

Assessing parent material uniformity of a red and black soil complex in the landscapes

CATENA ◽  
2009 ◽  
Vol 78 (2) ◽  
pp. 142-153 ◽  
Author(s):  
Markus Anda ◽  
D.J. Chittleborough ◽  
R.W. Fitzpatrick
Keyword(s):  
Black Soil ◽  
Parent Material ◽  
Soil Complex ◽  
Material Uniformity

scholarly journals Soil-landscape relationship in sandstone-gneiss topolithosequence in Amazonas, Brazil

2019 ◽  
Author(s):  
Julimar da Silva Fonseca ◽  
Milton César Costa Campos ◽  
Elilson Gomes de Brito Filho ◽  
Bruno Campos Mantovanelli ◽  
Laércio Santos Silva ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Clay Fraction ◽  
Parent Material ◽  
Sand Fraction ◽  
Physical Chemical ◽  
Soil Landscape ◽  
History Of ◽  
Geomorphic Surfaces ◽  
Upper Third ◽  
History Of Formation

Abstract. Soil position in the landscape reveals its history of formation and genesis. Therefore, the landscape is the combination of features of the surface of the earth with subsurface components (parent material), while the soil is a three-dimensional, dynamic natural body inserted in the landscape. This research aimed to study the soil-landscape relationship in a sandstone-gneiss topolithosequence in Amazonas, Brazil. The study was carried out along a 9.253-meter transect from the top downwards the softer slope. Soil profiles were selected in five landscape compartments (top, upper third, lower third, transport foothill, and deposition foothill). Morphological, mineralogical, physical, chemical, and ray diffraction characterizations were performed. Soils had different morphological, physical, chemical, and mineralogical attributes due to the variations of the geological substrate and landscape position. The mineralogy of the clay fraction is composed of kaolinite, goethite, hematite, and gibbsite, with goethite being the predominant iron oxide. A sand fraction dominance was observed in relation to the other fractions in all the profiles, being related to the alluvial nature of the parent material, with the highest values occurring in the lower third. The separation of the landscape into geomorphic surfaces and identification of the parent material were effective for understanding the variation of soil attributes along the landscape.

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