Microbial growth rates, carbon use efficiency and enzyme activities during post-agricultural soil restoration

Microorganisms are critical for litter decomposition, organic carbon (C) and nutrient transformations in soil, corresponding to the vegetation succession. The dynamics of microbial activities and ecological functions during the soil recovery after agricultural land use (post-agricultural restoration) remains unclear. We investigated the effects of vegetation and soil restoration duration on active microbial biomass, microbial growth rates, C use efficiency (CUE, analyzed by 14C glucose utilization), and enzyme activities in three soil types of Russia: Haplic Luvisol in a deciduous forest (chronosequence from 0 to 37 years), Luvic Phaeozem in forest steppe (0–66 years), and Haplic Phaeozem in forest steppe (0–42 years). The microbial CUE (0.66–0.82) decreased during restoration and was highly dependent on soil type: the lowest in Luvisol and the highest in Haplic Phaeozem. The activities of β-1,4-glucosidase, β-1,4-N-acetylglucosaminidase, leucine aminopeptidase, and acid phosphatase increased during post-agricultural restoration. Microbial growth rates and the proportion of active microorganisms increased with restoration, reflecting a shift of microbial community to fast-growing decomposers (mainly r strategists) caused by large litterfall from recovered natural vegetation. The increase of the portion of active microorganisms and microbial growth rates was correlated with activities of enzymes responsible for C, N and P cycling. In conclusion, the post-agricultural restoration activates microorganisms, raises microbial growth, increases enzyme activities and accelerates microbially-mediated C and nutrient turnover. © 2022 Elsevier B.V.

Авторы
Sun T.1, 2, 3 , Zhou J.8 , Shi L.4, 5, 6 , Feng W.1, 7 , Dippold M.A.4, 6 , Zang H.8 , Kurganova I.9, 10 , De Gerenyu V.L. , Kalinina O. 11 , Giani L.11 , Kuzyakov Y. 12, 13
Журнал
Издательство
Elsevier B.V.
Язык
Английский
Статус
Опубликовано
Номер
106226
Том
214
Год
2022
Организации
  • 1 State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, China
  • 2 University of Chinese Academy of Sciences, Beijing, China
  • 3 National Fukang Station of Desert Ecosystem Ecology, Field Sciences Observation and Research Station, Chinese Academy of Sciences, Xinjiang, Fukang, 831505, China
  • 4 Biogeochemistry of Agroecosystems, Department of Crop Science, Faculty of Agriculture, Georg August University of Göttingen, von Thünen-Weg 5, Göttingen, 37073, Germany
  • 5 Department of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
  • 6 Geo-Biosphere Interactions, Department of Geosciences, Faculty of Sciences, University of Tuebingen, Schnarrenbergstraße 94-96, Tuebingen, 72076, Germany
  • 7 Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
  • 8 College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
  • 9 Institute of Physicochemical and Biological Problems in Soil Science, Russian Academy of Sciences, Pushchino, Russian Federation
  • 10 Tyumen State University, 6 Volodarskogo Street, Tyumen, 625003, Russian Federation
  • 11 Dept. Soil Sci. C-v-O, University of Oldenburg, Oldenburg, Germany
  • 12 Department of Soil Science of Temperate Ecosystems, Department of Agricultural Soil Science, University of Goettingen, Göttingen, Germany
  • 13 Peoples Friendship University of Russia (RUDN University), 117198 Moscow, Institute of Environmental Sciences, Kazan Federal University, Kazan Federal University, Kazan, 420049, Russian Federation
Ключевые слова
Active microorganisms; Carbon sequestration; Carbon use efficiency; Microbial growth rates; Microbial life strategies; Restoration duration; Soil organic matter
Дата создания
06.07.2022
Дата изменения
06.07.2022
Постоянная ссылка
https://repository.rudn.ru/ru/records/article/record/83567/
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