Труды сотрудников ИЛ им. В.Н. Сукачева СО РАН

[Text] / O. V. Menyailo, B. . Huwe // J. Plant Nutr. Soil Sci. - 1999. - Vol. 162, Is. 5. - P527-531, DOI 10.1002/(SICI)1522-2624(199910)162:5527::AID-JPLN5273.3.CO;2-R. - Cited References: 14 . - 5. - ISSN 1436-8730РУБ Agronomy + Plant Sciences + Soil Science

Аннотация: The influence of temperature (T) and water potential (psi) on the denitrification potential, C and N mineralization and nitrification were studied in organic and mineral horizons of an acid spruce forest soil. The amount of N2O emitted from organic soil was 10 times larger than from the mineral one. The maximum of N2O emission was in both soils at the highest water potential 0 MPa and at 20 degrees C. CO2 production in the organic soil was 2 times higher than in mineral soil. Net ammonification in organic soil was negative for most of the T-psi variations, while in mineral soil it was positive. Net nitrification in organic soil was negative only at the maximum water potential and temperature (0 MPa, 28 degrees C). The highest rate was between 0 and -0.3 MPa and between 20 and 28 degrees C. In mineral soil NO3- accumulated at all T-psi variations with a maximum at 20 degrees C and -0.3 MPa. We concluded that in organic soil the immobilization of NH4+ is the dominant process in the N-cycling. Nevertheless, decreasing of total N mineralized at 0 MPa and 20-28 degrees C can be explained by denitrification.

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Держатели документа:
Univ Bayreuth, Dept Soil Phys, D-95440 Bayreuth, Germany
RAS, SB, Inst Forest, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Menyailo, O.V.; Huwe, B...

[Text] / O. V. Trefilova, P. A. Oskorbin // Eurasian Soil Sci. - 2014. - Vol. 47, Is. 2. - P96-101, DOI 10.1134/S1064229314020112. - Cited References: 22 . - ISSN 1064-2293. - ISSN 1556-195XРУБ Soil Science

Аннотация: The results of a field experiment for studying the seasonal dynamics of the CO2 (R-all) emitted from the overburden and enclosing rocks of a coal mine are presented as an integral index of their biological activity. The mean rate of the CO2 emission from the control substrate was 1.2 g C/m(2) per 24 h. The intensity of R-all for the variant with the application of mineral and complex fertilizers, along with a microbiological preparation, was higher by 28 and 34%, respectively. In the same variants, the R-all values little changed during the whole growing period. The measurements of the potential respiration of the rock mixture in the laboratory showed that a significant part of the CO2 flux was formed at the expense of carbon dioxide of abiotic origin. The values of the CO2 emission are concluded to be overestimated as compared to those for the real level of the biological activity of the substrates studied.

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Scopus

Держатели документа:
[Trefilova, O. V.
Oskorbin, P. A.] Russian Acad Sci, Siberian Div, Sukachev Inst Forestry, Krasnoyarsk 660036, Russia
ИЛ СО РАН

Доп.точки доступа:
Trefilova, O.V.; Oskorbin, P.A.