EVALUATION OF THE COLOR VALUE CRITERION OF HUMIC GLEYSOL

Organic carbon content and color value of A horizons are used as differentiating characteristics in separating Humic Gleysols from other Gleysolic soils in the Canadian System of Soil Classification. Many Gleysolic soils meet the organic carbon criterion but fail to meet the color value criterion of Humic Gleysol. It is concluded that the color value criterion is not an effective differentiating characteristic even though color is a useful indicator of organic carbon when laboratory data are not available. Key words: Principles of soil classification, differentiating characteristics

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Proposed classification for human modified soils in Canada: Anthroposolic order

Canadian Journal of Soil Science ◽

10.4141/cjss2011-028 ◽

2012 ◽

Vol 92 (1) ◽

pp. 7-18 ◽

Cited By ~ 27

Author(s):

M. Anne Naeth ◽

Heather A. Archibald ◽

Candace L. Nemirsky ◽

Leonard A. Leskiw ◽

J. Anthony Brierley ◽

...

Keyword(s):

Organic Carbon ◽

Carbon Content ◽

Water Regime ◽

Soil Layer ◽

Soil Classification ◽

Field Testing ◽

Anthropogenic Activity ◽

Organic Carbon Content ◽

Regulatory Frameworks ◽

Disturbed Soils

Naeth, M. A., Archibald, H. A., Nemirsky, C. L., Leskiw, L. A., Brierley, J. A., Bock, M. D., VandenBygaart, A. J. and Chanasyk, D. S. 2012. Proposed classification for human modified soils in Canada: Anthroposolic order. Can. J. Soil Sci. 92: 7–18. With increasing anthropogenic activity, the areal extent of disturbed soils is becoming larger and disturbances more intense. Regulatory frameworks must incorporate reclamation criteria for these disturbed soils, requiring consistent descriptions and interpretations. Many human altered soils cannot be classified using the Canadian System of Soil Classification (CSSC), thus an Anthroposolic Order is proposed. Anthroposols are azonal soils, highly modified or constructed by human activity, with one or more natural horizons removed, removed and replaced, added to, or significantly modified. Defining features are severe disruption of soil forming factors and introduction of potentially new pedogenic trajectories. Disturbed layers are anthropic in origin and contain materials significantly modified physically and/or chemically by human activities. Three great groups are defined by presence of anthropogenic artefacts and organic carbon content. Six subgroups are based on a cover soil layer with higher organic carbon content than the profile below it, on depth of disturbance, on drainage characteristics and water regime at the site. Some new phases and modifiers, in addition to traditional ones used in the CSSC, are based on chemical and physical properties and origins of anthropogenic artefacts. The proposed classification has been successfully applied to reclaimed profiles and is ready for widespread field testing.

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Evaluation of the Yangtze River Littoral Wetland Soil with Total Organic Carbon

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.989-994.1189 ◽

2014 ◽

Vol 989-994 ◽

pp. 1189-1191

Author(s):

Zhi Wen Luo ◽

Xing Wang

Keyword(s):

Organic Carbon ◽

Total Organic Carbon ◽

Carbon Content ◽

Yangtze River ◽

Three Gorges Reservoir ◽

Soil Classification ◽

Organic Carbon Content ◽

Three Gorges ◽

The Three Gorges Reservoir ◽

The Three Gorges

The Three Gorges Reservoir as an important hydraulic project of Yangtze River, the environmental issues attracts worldwide attention, and the environmental problems of littoral wetlands of the Three Gorges Reservoir are more important aspect. Total organic carbon (TOC) content by potassium dichromate oxidation spectrophotometry of downstream the Three Gorges Reservoir in Fengjie, Kaixian, Wushan, Fengdu, Daning estuary in the five regions in soil were determined. Then the organic carbon content of the soil classification comparison, analysis of the causes of soil organic carbon content of the various main reasons for differences, soil classification: the same region, same altitude, different species; the same area, the same species, different altitudes. Finally, by calculating the content of these five regions of the average total organic carbon is about 10.43g/kg.

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

Soil Science Annual ◽

10.1515/ssa-2015-0020 ◽

2015 ◽

Vol 66 (2) ◽

pp. 57-66 ◽

Cited By ~ 4

Author(s):

Marcin Świtoniak

Keyword(s):

Organic Carbon ◽

Carbon Content ◽

Soil Cover ◽

Soil Classification ◽

Base Saturation ◽

Organic Soils ◽

Organic Carbon Content ◽

Lake District ◽

Northern Poland ◽

Colluvial Soils

Abstract 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 Chełmno and Brodnica Lake District, northern Poland. Ten soil pits located in different types of landscapes were selected for testing soil properties. The colluvial material is characterized by diversified properties: thickness, particle-size distribution, organic carbon content, color, pH, and base saturation. As a result, the investigated soils represent broad spectrum of typological units according to Polish Soil Classification (2011). Some of them contain epipedons mollic and meet the criteria of colluvial chernozemic soils. They were found mainly on buried black earths in areas with small slope inclinations. Many pedons contain pale colored acidic colluvial material with low base saturation and low organic carbon content and must be classified as other types: arenosols (in Polish: arenosole) or rusty soils (in Polish: gleby rdzawe). These soils occur mostly in areas with intensive relief and overlay the different soil types, including rusty soil and organic soils. They are formed as a result of soils lessivés and rusty soils truncation. An introduction of the additional units of “proper colluvial soils” which have epipedon ochric, and “rusty-colluvial soils” with endopedon sideric to the next edition of Polish Soil Classification would enable a more precise expression of the genesis of these soils in the type rank. Moreover, the definition of chernozemic colluvial soils could be extended to colluvial soils with umbric horizon. Classifying soils derived from colluvial material as soils of other types leads to the disappearance of this units on maps and underestimation of the impact of denudation on the soil cover.

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