首页|Microbial growth rates, carbon use efficiency and enzyme activities during post-agricultural soil restoration
Microbial growth rates, carbon use efficiency and enzyme activities during post-agricultural soil restoration
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NSTL
Elsevier
? 2022 Elsevier B.V.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.
Active microorganismsCarbon sequestrationCarbon use efficiencyMicrobial growth ratesMicrobial life strategiesRestoration durationSoil organic matter
Sun T.、Feng W.、Shi L.、Dippold M.A.、Zhou J.、Zang H.、Kurganova I.、de Gerenyu V.L.、Kalinina O.、Giani L.、Kuzyakov Y.
展开 >
State Key Laboratory of Desert and Oasis Ecology Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences
Biogeochemistry of Agroecosystems Department of Crop Science Faculty of Agriculture Georg August University of G?ttingen
College of Agronomy and Biotechnology China Agricultural University
Institute of Physicochemical and Biological Problems in Soil Science Russian Academy of Sciences
Dept. Soil Sci. C-v-O University of Oldenburg
Department of Soil Science of Temperate Ecosystems Department of Agricultural Soil Science University of Goettingen
NSTL
Elsevier
