The pool of pedogenic carbon in the soils of different types and durations of use as croplands in the forest-steppe of the Central Russian Upland

Khokhlova, Olga; Chendev, Yu. G.; Myakshina, T. N.; Шишков, В. А.

doi:10.1134/s1064229313050062

Cited by 7 publications

(10 citation statements)

References 4 publications

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“…Thus, old-arable chernozems are characterized by a tendency for the ascending migration of ancient carbonates from the deep soil layers; the same phenomenon was earlier described for the arable gray forest soils in the investigated region [37,39,42].…”

Section: Resultssupporting

confidence: 77%

“…The 14 С-dates of humus in each of the investigated layers (10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(30)(31)(32)(33)(34)(35)(36)(37)(38)(39)(40), and 50-60 cm) increase with an increase in the duration of the soil plowing, which is quite reasonable, because the agrogenic dehumification of the soils proceeds mainly at the expense of the labile (and young) humus. This is true not only for the upper but also for the deeper horizons.…”

Section: Resultsmentioning

confidence: 99%

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Agrogenic evolution of automorphic chernozems in the forest-steppe zone (Belgorod oblast)

2017

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Abstract⎯Agrochronosequences of chernozems with different periods of their use in rainfed farming with application of traditional technologies have been studied in a typical forest-steppe area in Belgorod oblast. Certain stages in the development of these soils during more than two centuries of their agricultural use have been identified. These stages are related to changes in the intensity and direction of soil forming processes, such as soil compaction, soil aggregation, dehumification of the upper horizons, calcification of the soil profiles, argillization, etc. A significant impact on the soil changes during the agrogenic evolution of chernozems is exerted by the digging activity of burrowers, which is especially pronounced in the old-arable chernozems.Keywords: chernozems, soil agrochronosequences, tillage, forest-steppe, stadial specificity of the agrogenic evolution, multiple study methods DOI: 10.1134/S1064229317050040 Kozlovskii [17], and many other scientists. These studies allowed us to gain a better understanding of the essence of soil forming processes in plowed chernozems and their changes with time and to develop a set of methods aimed at conservation and reproduction of these soils as the most valuable nature resource of Russia. However, the diversity of the existing information on transformation of chernozems under the impact of tillage poses new problems related to the genesis of the new soil properties and processes in plowed chernozems. The changes in the morphogenetic character of plowed chernozems and in the intensity of a number of soil processes (in particular, dehumification) in them should be specially analyzed. It should be noted that, in some studies, the most important problem of the loss of organic matter from chernozems under the impact of tillage is considered not quite correctly: only the content of humus in the plow horizons is analyzed, whereas changes in the bulk density of the soils are ignored.

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Section: Resultssupporting

confidence: 77%

Section: Resultsmentioning

confidence: 99%

Agrogenic evolution of automorphic chernozems in the forest-steppe zone (Belgorod oblast)

2017

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“…The age of carbonates both in the upper and lower layers in the arable soils is 2 to 3 times greater than in the forest soil. We also recorded an older 14 C age obtained on carbonates in the arable soils as compared with the forest soils in other sites of the forest-steppe of the Central Russian Upland [50].…”

Section: Radiocarbon Dating Of Carbonatesmentioning

confidence: 83%

Dynamics of Carbonates in Soils under Different Land Use in Forest-Steppe Area of Russia Using Stable and Radiogenic Carbon Isotope Data

Khokhlova

Myakshina

2018

Geosciences

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The work is aimed at the analysis of carbonate dynamics in soils under different land use. The studied area is located in the forest steppe -of the Central Russian Upland. Soils were sampled at four sites: a broadleaf forest, an adjacent 50-year continuously cropped field including plots under a corn monoculture, bare fallow, and a crop rotation area with a clean fallow every fourth year. The carbonates' morphology, their chemical composition, as well as their stable and radiogenic isotopes of carbon were studied. Clear-cut distinctions were found in the carbonate distribution throughout the profiles in the microstructure of carbonate pedofeatures, carbon isotopic composition, and radiocarbon age of carbonates between the pairs of the plots as follows: the bare fallow and the crop rotation on the one hand, and the corn monoculture and forest on the other. The distinctions are commonly assumed to result from repeating upward water fluxes, which are different in the bare soils and those with plant cover. A clear difference occurred in the hydrothermal regime for soils with and without plant cover, and was found to be the key factor of the observed differences. In addition, in soils under plant cover, the carbonate migration upward occurs due to process of transpiration, whereas in soils devoid of plants, it occurs due to physical evaporation.

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“…Lower SIC in the 80-100 cm layer of the Reynolds cropland soil may indicate loss of carbonate due to this upward movement. Under tree cover, soil conditions are cooler with less evaporation from the soil surface than in grasslands and croplands, and carbonates would be more likely to leach (Khokhlova et al 2013 ).…”

Section: Resultsmentioning

confidence: 99%

Evolution of Soil Carbon Storage and Morphometric Properties of Afforested Soils in the U.S. Great Plains

et al. 2014

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The objective of this project was to use detailed soil profi le descriptions and soil carbon analyses to determine the soil C sequestration potential of tree planting across climatic gradients in the U.S. Great Plains. Tree windbreak age ranged from 19 to 70 years and age of cultivation from 22 to ~110 years. At each site, soil pits were prepared within the tree planting, the adjacent crop fi elds, and nearby undisturbed grassland. Windbreak soils had consistently thicker soil organic carbon (SOC)-enriched A or A+AB horizons when compared to the crop fi elds. The thickness of A or A+AB horizons in the windbreak soils were comparable to the undisturbed grassland soils. A linear relationship was detected between the difference in A+AB thickness of soils beneath windbreaks and undisturbed grasslands and a climate index (hydrothermal coeffi cient, HTC). These results indicate that tree windbreaks with more cool and moist climate conditions are more favorable for SOC accumulation in the surface soil. The relationship between SOC accumulation and climate factors enables the estimation of soil carbon stocks in existing windbreaks and the prediction of potential carbon sequestration of future plantings. Abstract The objective of this project was to use detailed soil profi le descriptions and soil carbon analyses to determine the soil C sequestration potential of tree planting across climatic gradients in the U.S. Great Plains. Tree windbreak age ranged from 19 to 70 years and age of cultivation from 22 to ~110 years. At each site, soil pits were prepared within the tree planting, the adjacent crop fi elds, and nearby undisturbed grassland. Windbreak soils had consistently thicker soil organic carbon (SOC)-enriched A or A+AB horizons when compared to the crop fi elds. The thickness of A or A+AB horizons in the windbreak soils were comparable to the undisturbed grassland soils. A linear relationship was detected between the difference in A+AB thickness of soils beneath windbreaks and undisturbed grasslands and a climate index (hydrothermal coeffi cient, HTC). These results indicate that tree windbreaks with more cool and moist climate conditions are more favorable for SOC accumulation in the surface soil. The relationship between SOC accumulation and climate factors enables the estimation of soil carbon stocks in existing windbreaks and the prediction of potential carbon sequestration of future plantings.

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The pool of pedogenic carbon in the soils of different types and durations of use as croplands in the forest-steppe of the Central Russian Upland

Cited by 7 publications

References 4 publications

Agrogenic evolution of automorphic chernozems in the forest-steppe zone (Belgorod oblast)

Agrogenic evolution of automorphic chernozems in the forest-steppe zone (Belgorod oblast)

Dynamics of Carbonates in Soils under Different Land Use in Forest-Steppe Area of Russia Using Stable and Radiogenic Carbon Isotope Data

Evolution of Soil Carbon Storage and Morphometric Properties of Afforested Soils in the U.S. Great Plains

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