作者：
发布时间：
2021
-
08
-
20
点击次数：
0
Abstract:Understanding the effects of changing climate and long-term human activities on soil organic carbon (SOC) and themediating roles of microorganisms is critical to maintain soil C stability in agricultural ecosystem. Here, we took samplesfrom a long-term soil transplantation experiment, in which large transects of Mollisol soil in a cold temperate region weretranslocated to warm temperate and mid-subtropical regions to simulate different climate conditions, with a fertilizationtreatment on top. This study aimed to understand fertilization effect on SOC and the role of soil microorganisms featuredafter long-term community incubation in warm climates. After 12 years of soil transplantation, fertilization led to lessreduction of SOC, in which aromatic C increased and the consumption of O-alkyl C and carbonyl C decreased. Soil livemicrobes were analyzed using propidium monoazide to remove DNAs from dead cells, and their network modulizationexplained 60.4% of variations in soil labile C. Single-cell Raman spectroscopy combined with D2O isotope labelingindicated a higher metabolic a...