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Soil Microbial Respiration in Subtaiga and Forest-Steppe Ecosystems of European Russia: Field and Laboratory Approaches

Authors
  • Ananyeva, N. D.1
  • Sushko, S. V.1, 2, 3
  • Ivashchenko, K. V.1, 2
  • Vasenev, V. I.2
  • 1 Institute of Physicochemical and Biological Problems in Soil Science of the Russian Academy of Sciences, Pushchino, Moscow oblast, 142290, Russia , Pushchino (Russia)
  • 2 Agrarian-Technological Institute, Peoples’ Friendship University of Russia, Moscow, 117198, Russia , Moscow (Russia)
  • 3 Agrophysical Research Institute, Saint-Petersburg, 195220, Russia , Saint-Petersburg (Russia)
Type
Published Article
Journal
Eurasian Soil Science
Publisher
Pleiades Publishing
Publication Date
Oct 26, 2020
Volume
53
Issue
10
Pages
1492–1501
Identifiers
DOI: 10.1134/S106422932010004X
Source
Springer Nature
Keywords
License
Yellow

Abstract

AbstractOur study focuses on testing laboratory measurements of soil microbial respiration as a proxy that in the field conditions. The soil microbial respiration was measured in field (MRfield) and laboratory (MRlab) conditions monthly (from May to October) in subtaiga (mixed forest, meadow) and forest-steppe (broad-leaved forest, virgin steppe) ecosystems of the European Russia. The MRfield was determined through soil respiration partitioning by the conventional substrate-induced respiration method. The MRlab was measured as basal respiration of 10 cm topsoil at 22°C and 60% water holding capacity. The contribution of MRfield to total soil respiration varied during the growing season from 25 to 82% for subtaiga and from 41 to 88% for forest-steppe. The MRfield for studied ecosystems varied from 2.2 to 21.7 g СО2/(m2 d), while MRlab was from 3.5 to 18.6 g СО2/(m2 d). Similar results obtained by field and laboratory approaches were in 50% of measurements in the subtaiga ecosystems and in almost 20% of cases on the forest-steppe. The average MRfield and MRlab for growing season did not significantly differ for all studied ecosystems. These findings demonstrate possible prospects of using laboratory measurement of soil microbial respiration during the growing season to approximate and predict average MRfield for various ecosystems.

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