The Organic Matter Pool, Composition and Transformation in Soils of Middle Siberia
The structure and agrogenic transformation of organic substance in chernozems of Middle Siberia are considered (within Krasnoyarsk Krai, Khakassia and Tuva). The comparative-geographic, comparative-analytical and stationary observation methods are used in this work. These investigations are based on...
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V.V. Dokuchaev Soil Science Institute
2017
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Online Access: | https://doi.org/10.19047/0136-1694-2017-90-96-115 https://doaj.org/article/92e506a98ddc44108d3e2b68cb83bbd7 |
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ftdoajarticles:oai:doaj.org/article:92e506a98ddc44108d3e2b68cb83bbd7 2024-09-15T18:17:07+00:00 The Organic Matter Pool, Composition and Transformation in Soils of Middle Siberia V. V. Chuprova 2017-09-01T00:00:00Z https://doi.org/10.19047/0136-1694-2017-90-96-115 https://doaj.org/article/92e506a98ddc44108d3e2b68cb83bbd7 RU rus V.V. Dokuchaev Soil Science Institute https://bulletin.esoil.ru/jour/article/view/265 https://doaj.org/toc/0136-1694 https://doaj.org/toc/2312-4202 0136-1694 2312-4202 doi:10.19047/0136-1694-2017-90-96-115 https://doaj.org/article/92e506a98ddc44108d3e2b68cb83bbd7 Бюллетень Почвенного института им. В.В. Докучаева, Vol 0, Iss 90, Pp 96-115 (2017) минерализуемое органическое вещество подвижный гумус параметры гумусного состояния мортмасса chernozem soil organic matter mineralized organic matter mobile humus pool parameters of humus state mortmass decomposition loss of mobile humus Agriculture (General) S1-972 article 2017 ftdoajarticles https://doi.org/10.19047/0136-1694-2017-90-96-115 2024-08-05T17:48:53Z The structure and agrogenic transformation of organic substance in chernozems of Middle Siberia are considered (within Krasnoyarsk Krai, Khakassia and Tuva). The comparative-geographic, comparative-analytical and stationary observation methods are used in this work. These investigations are based on ideas of academician I.V. Tyurin, who had a Krasnoyarsk period in his creative work. All of the forms of humic compounds of chernozem type are presented in the studied soils. The mineralized (transformed) pool of organic matter in chernozems (19-28 t C/ha) is characterized by set of the plant residues, microbial biomass and a mobile humus. The entrance of plant residues into the soil of a graminae-fallow-hoed crop rotation makes 3.32 t C/ha per year, graminae-grass - 3.89 C/ha per year. The contribution of living roots reaches 40-70% of year stocks of the plant residues. The entrance of additional portions of "fresh" plant material with straw and green manure increases the mineralized pool of the organic matter and its decomposition intensity. The amount of microbial biomass in an arable layer of chernozems fluctuates from 1.5 to 3.0 t C/ha. The decomposition of plant residues occurs at k = 0.37-0.44. The share of a mobile humus (water- and alkaline-soluble compounds) as a part of the mineralized chernozems OM reaches 69-77%. The seasonal variability of mobile humus concentration is determined by the unequal rate of plants death, the entrance into the soil and decomposition of plant residues, different intensity of their transformation in neoformed humic substances. Losses of humus mobile compounds in soils of Krasnoyarsk Krai (0.23 t C/ha per year) contain about 7% of his expenses on the forming of net primary production and are compensated here by a neoformed humus at 91%, in soils of Khakassia - at 34%, Tuva - only at 16%. Article in Journal/Newspaper Krasnoyarsk Krai Siberia Directory of Open Access Journals: DOAJ Articles Dokuchaev Soil Bulletin 90 96 115 |
institution |
Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
Russian |
topic |
минерализуемое органическое вещество подвижный гумус параметры гумусного состояния мортмасса chernozem soil organic matter mineralized organic matter mobile humus pool parameters of humus state mortmass decomposition loss of mobile humus Agriculture (General) S1-972 |
spellingShingle |
минерализуемое органическое вещество подвижный гумус параметры гумусного состояния мортмасса chernozem soil organic matter mineralized organic matter mobile humus pool parameters of humus state mortmass decomposition loss of mobile humus Agriculture (General) S1-972 V. V. Chuprova The Organic Matter Pool, Composition and Transformation in Soils of Middle Siberia |
topic_facet |
минерализуемое органическое вещество подвижный гумус параметры гумусного состояния мортмасса chernozem soil organic matter mineralized organic matter mobile humus pool parameters of humus state mortmass decomposition loss of mobile humus Agriculture (General) S1-972 |
description |
The structure and agrogenic transformation of organic substance in chernozems of Middle Siberia are considered (within Krasnoyarsk Krai, Khakassia and Tuva). The comparative-geographic, comparative-analytical and stationary observation methods are used in this work. These investigations are based on ideas of academician I.V. Tyurin, who had a Krasnoyarsk period in his creative work. All of the forms of humic compounds of chernozem type are presented in the studied soils. The mineralized (transformed) pool of organic matter in chernozems (19-28 t C/ha) is characterized by set of the plant residues, microbial biomass and a mobile humus. The entrance of plant residues into the soil of a graminae-fallow-hoed crop rotation makes 3.32 t C/ha per year, graminae-grass - 3.89 C/ha per year. The contribution of living roots reaches 40-70% of year stocks of the plant residues. The entrance of additional portions of "fresh" plant material with straw and green manure increases the mineralized pool of the organic matter and its decomposition intensity. The amount of microbial biomass in an arable layer of chernozems fluctuates from 1.5 to 3.0 t C/ha. The decomposition of plant residues occurs at k = 0.37-0.44. The share of a mobile humus (water- and alkaline-soluble compounds) as a part of the mineralized chernozems OM reaches 69-77%. The seasonal variability of mobile humus concentration is determined by the unequal rate of plants death, the entrance into the soil and decomposition of plant residues, different intensity of their transformation in neoformed humic substances. Losses of humus mobile compounds in soils of Krasnoyarsk Krai (0.23 t C/ha per year) contain about 7% of his expenses on the forming of net primary production and are compensated here by a neoformed humus at 91%, in soils of Khakassia - at 34%, Tuva - only at 16%. |
format |
Article in Journal/Newspaper |
author |
V. V. Chuprova |
author_facet |
V. V. Chuprova |
author_sort |
V. V. Chuprova |
title |
The Organic Matter Pool, Composition and Transformation in Soils of Middle Siberia |
title_short |
The Organic Matter Pool, Composition and Transformation in Soils of Middle Siberia |
title_full |
The Organic Matter Pool, Composition and Transformation in Soils of Middle Siberia |
title_fullStr |
The Organic Matter Pool, Composition and Transformation in Soils of Middle Siberia |
title_full_unstemmed |
The Organic Matter Pool, Composition and Transformation in Soils of Middle Siberia |
title_sort |
organic matter pool, composition and transformation in soils of middle siberia |
publisher |
V.V. Dokuchaev Soil Science Institute |
publishDate |
2017 |
url |
https://doi.org/10.19047/0136-1694-2017-90-96-115 https://doaj.org/article/92e506a98ddc44108d3e2b68cb83bbd7 |
genre |
Krasnoyarsk Krai Siberia |
genre_facet |
Krasnoyarsk Krai Siberia |
op_source |
Бюллетень Почвенного института им. В.В. Докучаева, Vol 0, Iss 90, Pp 96-115 (2017) |
op_relation |
https://bulletin.esoil.ru/jour/article/view/265 https://doaj.org/toc/0136-1694 https://doaj.org/toc/2312-4202 0136-1694 2312-4202 doi:10.19047/0136-1694-2017-90-96-115 https://doaj.org/article/92e506a98ddc44108d3e2b68cb83bbd7 |
op_doi |
https://doi.org/10.19047/0136-1694-2017-90-96-115 |
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Dokuchaev Soil Bulletin |
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96 |
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