Differential effects of conifer and broadleaf litter inputs on soil organic carbon chemical composition through altered soil microbial community composition
Autor: | Shirong Liu, Hui Wang, Lin Chen, Angang Ming, Pi-Zheng Hong, Zuomin Shi, Lihua Lu, Daoxiong Cai, Jingxin Wang, Haolong Yu, Jia Xu |
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Rok vydání: | 2016 |
Předmět: |
China
010504 meteorology & atmospheric sciences Nitrogen Forests Fagaceae complex mixtures 01 natural sciences Article Trees Carbon cycle Soil Botany Forest ecology Biomass Chemical composition Ecosystem Soil Microbiology 0105 earth and related environmental sciences Multidisciplinary Bacteria Composting Fatty Acids Fungi 04 agricultural and veterinary sciences Soil carbon Plant litter Pinus Carbon Plant Leaves Microbial population biology Environmental chemistry 040103 agronomy & agriculture Litter 0401 agriculture forestry and fisheries Environmental science Composition (visual arts) |
Zdroj: | Scientific Reports |
ISSN: | 2045-2322 |
DOI: | 10.1038/srep27097 |
Popis: | A strategic selection of tree species will shift the type and quality of litter input and subsequently magnitude and composition of the soil organic carbon (SOC) through soil microbial community. We conducted a manipulative experiment in randomized block design with leaf litter inputs of four native subtropical tree species in a Pinus massoniana plantation in southern China and found that the chemical composition of SOC did not differ significantly among treatments until after 28 months of the experiment. Contrasting leaf litter inputs had significant impacts on the amounts of total microbial, Gram-positive bacterial and actinomycic PLFAs, but not on the amounts of total bacterial, Gram-negative bacterial and fungal PLFAs. There were significant differences in alkyl/O-alkyl C in soils among the leaf litter input treatments, but no apparent differences in the proportions of chemical compositions (alkyl, O-alkyl, aromatic and carbonyl C) in SOC. Soil alkyl/O-alkyl C was significantly related to the amounts of total microbial and Gram-positive bacterial PLFAs, but not to the chemical compositions of leaf litter. Our findings suggest that changes in forest leaf litter inputs could result in changes in chemical stability of SOC through the altered microbial community composition. |
Databáze: | OpenAIRE |
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