Lithologic control on soil texture heterogeneity

Cámara, Joaquín; Gómez-Miguel, Vicente D.; Martı́n, Miguel Ángel

doi:10.1016/j.geoderma.2016.09.006

Cited by 17 publications

(13 citation statements)

References 22 publications

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“…Results show that BEI values are higher in areas mostly formed by granitic materials (DO Arribes) than in regions where metamorphic rocks are predominant (RD Douro), which is consistent with the results and conclusions of previous works [14][15].…”

Section: Soil Texture Heterogeneitysupporting

confidence: 92%

Quantifying hydropedological properties of terroir at different scales. Implications in vineyard characteristics of three viticultural regions of the Iberian Peninsula.

2018

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Summary.Hydropedology is a branch of science that studies the spatial and temporal variability of the soil water content, knowledge needed for a proper application of precision agriculture techniques in viticulture. This work aims to quantify at different scales hydropedological properties of viticultural regions with different geological, climatic and cultural characteristics, and it also aims to explore the relationships between these hydropedological properties and the vineyard characteristics within the studied regions. The structure of drainage networks at landscape scale and the heterogeneity of the soil particle size distribution are the hydropedological properties considered for the purpose of this study. The three winegrowing regions are the Região Demarcada do Douro, in Portugal, and the D.O. Arribes and D.O. Campo de Borja, in Spain, involving a total area of 4,144 km 2 . The datasets for this work are the soil maps of the three regions scale 1/25,000, the digital terrain model, and the spatial database with the characteristics of the vineyards within the study area. Qualitative relationships have been established between landscape attributes, vineyard characteristics and physical soil properties. Results show that quantifying hydropedological properties using complexity measures provides innovative information of terroirs that could have multiple applications in terroir zoning studies.

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Section: Soil Texture Heterogeneitysupporting

confidence: 92%

Quantifying hydropedological properties of terroir at different scales. Implications in vineyard characteristics of three viticultural regions of the Iberian Peninsula.

2018

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“…Specific investigations to the influence of particle size distribution heterogeneity on soil bulk density values also showed ways of improvement through integration of a Shannon information entropy metric of soil texture in existing PTFs (Martín et al, ). This entropy index and soil texture heterogeneity in general might furthermore be estimated based on general lithological character enhancing the possibility to apply such measures more widely (Cámara et al, ).…”

Section: Challenges For Ptfs In Earth System Sciencementioning

confidence: 99%

Pedotransfer Functions in Earth System Science: Challenges and Perspectives

Looy

Bouma

Herbst

et al. 2017

Reviews of Geophysics

397

297

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Soil, through its various functions, plays a vital role in the Earth's ecosystems and provides multiple ecosystem services to humanity. Pedotransfer functions (PTFs) are simple to complex knowledge rules that relate available soil information to soil properties and variables that are needed to parameterize soil processes. In this paper, we review the existing PTFs and document the new generation of PTFs developed in the different disciplines of Earth system science. To meet the methodological challenges for a successful application in Earth system modeling, we emphasize that PTF development has to go hand in hand with suitable extrapolation and upscaling techniques such that the PTFs correctly represent the spatial heterogeneity of soils. PTFs should encompass the variability of the estimated soil property or process, in such a way that the estimation of parameters allows for validation and can also confidently provide for extrapolation and upscaling purposes capturing the spatial variation in soils. Most actively pursued recent developments are related to parameterizations of solute transport, heat exchange, soil respiration, and organic carbon content, root density, and vegetation water uptake. Further challenges are to be addressed in parameterization of soil erosivity and land use change impacts at multiple scales. We argue that a comprehensive set of PTFs can be applied throughout a wide range of disciplines of Earth system science, with emphasis on land surface models. Novel sensing techniques provide a true breakthrough for this, yet further improvements are necessary for methods to deal with uncertainty and to validate applications at global scale.

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“…Understanding the formation and provenance of sediments is necessary to effectively implement soil and water conservation measures (Fielding et al, 2018). Soil formation is a competition between pedologic and sedimentologic processes (Giosan et al, 2014;Cámara et al, 2017). Soil is different than sediment.…”

Section: Introductionmentioning

confidence: 99%

“…For many geologists and pedologists, uniformity of parent material is still in question for contrastingtextured soils in many geomorphic settings (Portes et al, 2016). As a result, identifying lithologic discontinuities (LDs) is crucial to pedogenic interpretation (Cámara et al, 2017). LDs are significant changes in particle size distribution (PSD) throughout the solum or mineralogical composition of the individual horizons or layers from different ages that represent differences in lithology within a regolith (FAO, 2006;Waroszewski et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…Sediment is an important element in wadis and their connecting waters (Giosan et al, 2014). Weathering intensity and soil formation in high mountain environments are strongly constrained by macroclimatic factors, such as temperature and precipitation (Cámara et al, 2017). Moreover, von Blanckenburg (2005) concluded that the rates of chemical weathering are primarily controlled by erosion rates and geomorphic stability than by temperature or precipitation (Schaetzl and Anderson, 2005).…”

Section: Introductionmentioning

confidence: 99%

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Formation and Taxa of some Wadi Dahab Tributaries Soils, South Sinai, Egypt

Elwan¹

2018

Journal of Soil and Water Sciences

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Geological parent material is a soil forming factor which controls the particle size distribution (PSD), geochemical characterization, and mineralogical properties. In Wadi Dahab Basin at southeastern Sinai of Egypt, four main tributaries (Al-Ghaib, Zoghra, Abu-Khashab and Um-Ism) and their subtributaries, having different geological parent materials, were selected and mapped. Sixteen pedons containing 51 sediment samples across the slope gradient (1335-9 m) of Wadi Dahab Basin representing all its tributaries and subtributaries were exhaustively analysed for the purposes of: (1) detecting the lithologic discontinuities (LDs) through soil morphology and uniformity indices; (2) recognizing the weathering intensity using the geochemical data; (3) identifying the sediments provenance via heavy mineral distribution; and (4) classifying the soils up to family level. LDs in most pedons revealed sequences of deposition and erosion processes and the heterogeneity of the parent material. The vertical distribution of coarse fragments within a pedon is proposed as a morphologic indicator (as with other clay-free basis indices) to detect LDs in soils. The Fe 2 O 3 and Al 2 O 3 were relatively enriched at downslope positions while SiO 2 , MgO, K 2 O, and Na 2 O were strongly lost during sediment weathering and soil formation, with the exception of CaO that was highly affected by CaCO 3 content. The heavy minerals characteristics suggest their mixed sources from sandstone, limestone, granites, and metamorphic rocks. The heavy minerals concentration and geochemical oxides in most studied pedons followed the LD set, indicating further approaches for detecting LDs. Pedons from upslope positions were immature sediments and classified as Entisols while pedons from the downslopes of Wadi Al-Ghaib, Wadi Zoghra, and Wadi Dahab's delta were submature sediments and classified as Aridisols. Furthermore, six families were identified across the study area. Indices based on PSD, geochemical, and mineralogical data were evaluated and further implications of the results were discussed in the text.

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Lithologic control on soil texture heterogeneity

Cited by 17 publications

References 22 publications

Quantifying hydropedological properties of terroir at different scales. Implications in vineyard characteristics of three viticultural regions of the Iberian Peninsula.

Quantifying hydropedological properties of terroir at different scales. Implications in vineyard characteristics of three viticultural regions of the Iberian Peninsula.

Pedotransfer Functions in Earth System Science: Challenges and Perspectives

Formation and Taxa of some Wadi Dahab Tributaries Soils, South Sinai, Egypt

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