Relationships Between Soil Microorganisms, Plant Communities, and Soil Characteristics in Chinese Subtropical Forests.

in Sciences Citation Index(SCI), 科學引文索引資料庫(SCI)
標題Relationships Between Soil Microorganisms, Plant Communities, and Soil Characteristics in Chinese Subtropical Forests.
出版類型SCI(Sciences Citation Index)
AuthorsYu-Ting Wu, 吳羽婷, Jessica Gutknecht J. G., Karin Nadrowski K. N., Christian Geisler C. G., Peter Kuehn P. K., Thomas Scholten T. S., Sabine Both S. B., Alexandra Erfmeier A. E., Martin Boehnke M. A. R. T. I. N. B. O. E. H. N. K. E., Helge Bruelheide H. E. L. G. E. B. R. U. E. L. H. E. I. D. E., Tesfaye Wubet T. W., & Francois Buscot F. B.
出版日期2018 / 1

We analyzed the influence of above- and belowground
factors on the soil microbial community in
a Chinese subtropical forest, one of the most
diverse biomes in the northern hemisphere. Soil
samples were taken at different depths from four
replicate comparative study plots in each of three
forest age classes (young 10–40 years, medium
40–80 years, old ?80 years). Microbial biomass and
community structure were then determined using
phospholipid fatty acid (PLFA) analysis, and basal
respiration and microbial biomass carbon (Cmic)
were determined by substrate-induced respiration.
These data were then related to plant community
and soil variables using non-metric multidimensional
scaling analysis and post-hoc permutational
correlations. We found that microbial lipid composition
and abundance were not related to forest
age class. Instead, microbial lipid composition and
abundance were related to factors reflecting primary
production, i.e., percent litter cover, percent
dead wood cover, and percent tree layer cover.
Specifically, the relative abundance (mol fraction)
of indicators for arbuscular mycorrhizal fungi,
Gram-positive and Gram-negative bacteria were
positively significantly correlated with percent litter
cover. We also found that the biomass of all
microbial groups and total PLFA were negatively
significantly related to percent deadwood cover. In
addition, pHH2O was the only soil parameter that
was correlated significantly to microbial biomass.
Our results indicate that overarching ecological
factors such as plant productivity and soil pH are
important factors influencing the soil microbial
community, both in terms of biomass and of community
composition in this subtropical ecosystem.

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