Soil formation in the technogenic forest-steppe landscapes of the Nazarovskaya Depression in western Siberia |
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Authors: | L S Shugalei V V Chuprova |
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Institution: | 1.Sukachev Institute of Forestry, Siberian Division,Russian Academy of Sciences,Akademgorodok, Krasnoyarsk,Russia;2.Krasnoyarsk State Agrarian University,Krasnoyarsk,Russia |
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Abstract: | The soil formation was studied in the 21- to 35-year-old pine plantations created on the overburden dumps of the Nazarovskaya
Depression without applying the material of the humus horizon. The surface technogenic formations under the pine plantations
belong to the group of naturfabricats (surface formations devoid of the humus horizon and composed of natural substrate).
The morphological characteristics, bulk chemical and particle-size compositions, and labile properties of the soils indicate
that the accumulation and transformation of organic matter are dominant processes in the artificially planted forests. The
accumulation of organic residues and destruction and humification are tightly related to the environmental conditions transformed
by the technogenesis and conceal other processes forming the soil profiles. Quasizems created for agricultural production
purposes were the objects of the study. They were formed by covering the technically planned overburden rocks with the material
of humus layers. The thickness of the humus horizons of the quasizems varies greatly (25–64%); the variation of the humus
reserves in them is 34–122%. Middle-profile horizons have not been formed by the present time. |
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