Relating extent of colluvial soils to topographic derivatives and soil variables in a Luvisol sub-catchment, Central Bohemia, Czech Republic

Zádorová, Tereza; Žížala, Daniel; Penížek, Vít; Čejková, Š.

doi:10.17221/57/2013-swr

Cited by 21 publications

(9 citation statements)

References 30 publications

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“…At Šardice site, the SOC content in topsoil decreases in AC class. This is due to an advanced stage of erosion degradation at the study site when loess is exposed in eroded parts of slopes and redeposited in the accumulation positions [53,72]. Zádorová et al [94] described this process as a retrograde soil development typical for the most vulnerable loess regions with dissected relief.…”

Section: Assessment Of Soil Properties For Erosion Classes Distinguismentioning

confidence: 93%

“…Setting of defining parameters of each class is site-specific depending on soil type and parent material. The quantitative setting of each erosion stage at individual study sites was based on previously performed regional studies [71,72]. Four groups (erosion classes of soils) were established at each study site (see Table 3):…”

Section: Definition Of Groups Of Site-specific Erosion Classesmentioning

confidence: 99%

“…The A horizon thickness prediction using DEM modelling was previously successfully used in Zádorová et al [71,72] for identification of deep colluvial soils. In our study, the A horizon thickness showed very good potential in AC distinguishing at both sites.…”

Section: Assessment Of Soil Properties For Erosion Classes Distinguismentioning

confidence: 99%

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Assessment of Soil Degradation by Erosion Based on Analysis of Soil Properties Using Aerial Hyperspectral Images and Ancillary Data, Czech Republic

2017

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Abstract:The assessment of the soil redistribution and real long-term soil degradation due to erosion on agriculture land is still insufficient in spite of being essential for soil conservation policy. Imaging spectroscopy has been recognized as a suitable tool for soil erosion assessment in recent years. In our study, we bring an approach for assessment of soil degradation by erosion by means of determining soil erosion classes representing soils differently influenced by erosion impact. The adopted methods include extensive field sampling, laboratory analysis, predictive modelling of selected soil surface properties using aerial hyperspectral data and the digital elevation model and fuzzy classification. Different multivariate regression techniques (Partial Least Square, Support Vector Machine, Random forest and Artificial neural network) were applied in the predictive modelling of soil properties. The properties with satisfying performance (R 2 > 0.5) were used as input data in erosion classes determination by fuzzy C-means classification method. The study was performed at four study sites about 1 km 2 large representing the most extensive soil units of the agricultural land in the Czech Republic (Chernozems and Luvisols on loess and Cambisols and Stagnosols on crystalline rocks). The influence of site-specific conditions on prediction of soil properties and classification of erosion classes was assessed. The prediction accuracy (R 2 ) of the best performing models predicting the soil properties varies in range 0.8-0.91 for soil organic carbon content, 0.21-0.67 for sand content, 0.4-0.92 for silt content, 0.38-0.89 for clay content, 0.73-089 for Fe ox , 0.59-0.78 for F ed and 0.82 for CaCO 3 . The performance and suitability of different properties for erosion classes' classification are highly variable at the study sites. Soil organic carbon was the most frequently used as the erosion classes' predictor, while the textural classes showed lower applicability. The presented approach was successfully applied in Chernozem and Luvisol loess regions where the erosion classes were assessed with a good overall accuracy (82% and 67%, respectively). The model performance in two Cambisol/Stagnosol regions was rather poor (51%-52%). The results showed that the presented method can be directly and with a good performance applied in pedologically and geologically homogeneous areas. The sites with heterogeneous structure of the soil cover and parent material will require more precise local-fitted models and use of further auxiliary information such as terrain or geological data. The future application of presented approach at a regional scale promises to produce valuable data on actual soil degradation by erosion usable for soil conservation policy purposes.

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Section: Assessment Of Soil Properties For Erosion Classes Distinguismentioning

confidence: 93%

Section: Definition Of Groups Of Site-specific Erosion Classesmentioning

confidence: 99%

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Assessment of Soil Degradation by Erosion Based on Analysis of Soil Properties Using Aerial Hyperspectral Images and Ancillary Data, Czech Republic

2017

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“…Occurrence of the colluvial soils which contain high amounts of organic carbon in flat and gently undulated morainic landscapes of Sêpopolska Plain (NE Poland) was described by Orzechowski (2008). High content of organic carbon was also found in slope deposits accumulated as a result of slow truncation of Luvisols in Czech Republic (Zádorová et al 2014). Issues relating to classification of colluvial soils in young morainic areas Subtypes of chernozemic colluvial soils were determined based on mollic horizon thickness.…”

Section: Discussionmentioning

confidence: 99%

Issues relating to classification of colluvial soils in young morainic areas (Chełmno and Brodnica Lake District, northern Poland)

Świtoniak¹

2015

Soil Science Annual

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Colluvial soils (in Polish: gleby deluwialne) are an important part of the soil cover in young morainic landscapes of northern Poland. They evolved as a result of the accumulation of eroded material at the foot of the slopes and bottoms of closed depressions. The aim of this study was to determine the systematic position of colluvial soils commonly found in the Che³mno and Brodnica Lake District, northern Poland. Ten soil pits located in different types of landscapes were selected for testing soil properties.

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“…The thickness of a colluvial layer depends on the intensity of runoff and the length of time of agricultural use; it ranges from tens of centimetres to several metres in extreme cases (Terhorst, ; Kadereit et al , ; Zádorová et al , ). The results of studies in temperate areas indicate that the sedimentation of topsoil material results predominantly from two processes: the first is intense sheet wash that occurs after periods of heavy rain when a soil layer that might be tens of centimetres thick is removed and subsequently accumulates at the base of a slope or is washed from the drainage area (Kadereit et al , ; Poreba et al , ; Zádorová et al, ; Wang et al , ), and the second process is slow but frequent sheet wash that generates colluvial microlayers (Zádorová et al , ; Świtoniak, ). In arid and semiarid environments, larger rates of rapid and uneven sedimentation occur because of a seasonal climate with irregular but frequent and intense rain events and water‐repellent soils (Gaspar et al , ).…”

Section: Morphology Stratigraphy and Properties Of Colluvial Soilsmentioning

confidence: 99%

Formation, morphology and classification of colluvial soils: a review

Zádorová

žek

2018

European J Soil Science

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Summary Colluvial soils have received increased attention in different fields of environmental and geoarchaeological research over the past two decades. However, their pedological functions and status as specific soil units have seldom been discussed. The concepts and general understanding of the term ‘colluvial soil’ often vary; the definition of this term is vague and thus requires standardization. In this paper we define colluvial soils as soil units that underwent a specific profile development and record characteristics formed by specific processes. We also review and summarize concepts and definitions of colluvial soils in the geosciences, describe their morphology and properties, assess a typical colluvial profile and propose a new definition and inclusion of colluvial soils in soil classification systems. We suggest that colluvial soils should be defined as either (i) colluvisols, which are recent undeveloped soils formed by the periodic rejuvenation of a soil profile because of the accumulation of eroded topsoil or (ii) colluvium‐derived soils, which are soils that developed from colluvia that underwent various pedogenetic processes. The proposed criteria for the classification of colluvisols highlight (i) the accumulation of eroded soil material as the primary process in the formation of colluvisols, (ii) their specific terrain positions and (iii) the different types of development of colluvisol profiles. Highlights Concepts and general understanding of the term ‘colluvial soil’ vary and need standardization. We distinguish two types of colluvial soil: colluvisols and colluvium‐derived soils. We define three types of colluvisols reflecting variation in stratigraphy of their profiles. We propose internationally applicable criteria for identification and classification of colluvisols.

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Relating extent of colluvial soils to topographic derivatives and soil variables in a Luvisol sub-catchment, Central Bohemia, Czech Republic

Abstract: Zádorová T., Žížala D

Cited by 21 publications

References 30 publications

Assessment of Soil Degradation by Erosion Based on Analysis of Soil Properties Using Aerial Hyperspectral Images and Ancillary Data, Czech Republic

Assessment of Soil Degradation by Erosion Based on Analysis of Soil Properties Using Aerial Hyperspectral Images and Ancillary Data, Czech Republic

Issues relating to classification of colluvial soils in young morainic areas (Chełmno and Brodnica Lake District, northern Poland)

Formation, morphology and classification of colluvial soils: a review

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