Title of
Journal：
Science of The Total Environment
Paper
Code：
Volume：
541
Number：
Page：
230–237
Others：
Classification：
Source：
Abstract：
Afforestation may alter soil microbial community structure and function, and further affect soil carbon (C) and nitrogen (N) dynamics. Here we investigated soil microbial carbon and nitrogen (MBC and MBN) and microbial community [e.g. bacteria (B), fungi (F)] derived from phospholipid fatty acids (PLFAs) analysis in afforested (implementing woodland and shrubland plantations) and adjacent croplands in central China. Relationships of microbial properties with biotic factors [litter, fine root, soil organic carbon (SOC), total nitrogen (TN) and inorganic N], abiotic factors (soil temperature,moisture and pH), and major biological processes [basal microbial respiration, microbial metabolic quotient (qCO2), net N mineralization and nitrification] were developed. Afforested soils had higher mean MBC,MBN andMBN:TN ratios than the croplands due to an increase in litter input, but had lowerMBC:SOC ratio resulting fromlow-quality (higher C:N ratio) litter. Afforested soils also had higher F:B ratio, whichwas probably attributed to higher C:N ratios in litter and soil, and shifts of soil inorganic Nforms, water, pH and disturbance. Alterations in soil microbial biomass and community structure following afforestation were associated with declines in basal microbial respiration, qCO2, net N mineralization and nitrification, which likely maintained higher soil carbon and nitrogen storage and stability.
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