Precipitation affects soil microbial and extracellular enzymatic responses to warming

Guanlin Li, Seongjun Kim, Seung Hyun Han, Hanna Chang, Daolin Du, Yo Whan Son

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

Soil microbial communities and extracellular enzymes have important roles in many terrestrial ecosystem processes and are influenced by climate change drivers. In the present study, the individual and/or interactive effects of climate change drivers on soil microbial communities and extracellular enzyme activities were measured in experimental field plots planted with Pinus densiflora and subjected to air warming (ambient or +3 °C) in combination with precipitation treatments (reduced by 30%, ambient or elevated by 30%). Soil microbial biomass and four extracellular enzyme activities were measured. Additionally, the structure and composition of microbial communities were assessed. Warming increased microbial biomass nitrogen concentration by 22.3% in precipitation control plots and by 17.9% in elevated precipitation plots. Warming lowered the extracellular enzyme activity in precipitation control plots, but increased their activity in elevated precipitation plots. Warming had a differential effect on the composition of bacterial and fungal communities under different precipitation treatments, with significant changes in therelative abundance of Proteobacteria and Acidobacteria. Meanwhile, the alpha diversity index of both bacterial and fungal communities were affected by warming, with variation among the precipitation treatments. Changes in enzyme activities and microbial communities were correlated with shifts in soil environmental conditions (e.g., moisture, temperature, and available nutrients). In conclusion, changes in soil environmental conditions may select for distinct soil microbial communities, further reshaping soil ecosystem processes and functions in a warmer world.

Original languageEnglish
Pages (from-to)212-221
Number of pages10
JournalSoil Biology and Biochemistry
Volume120
DOIs
Publication statusPublished - 2018 May 1

Keywords

  • Climate change drivers
  • Soil bacterial community
  • Soil fungal community
  • Soil microbial biomass

ASJC Scopus subject areas

  • Microbiology
  • Soil Science

Fingerprint Dive into the research topics of 'Precipitation affects soil microbial and extracellular enzymatic responses to warming'. Together they form a unique fingerprint.

Cite this