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Microbes and Climate Change01:27

Microbes and Climate Change

Microorganisms are pivotal agents in Earth's biogeochemical cycles, significantly influencing climate dynamics through their metabolic activities. These microbes modulate the levels of key greenhouse gases by both contributing to and helping mitigate climate change.Microbial Contributions to Greenhouse Gas EmissionsRising global temperatures accelerate microbial metabolism, which, in turn, speeds up the decomposition of organic matter. This process releases carbon dioxide (CO₂) through...
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The Nitrogen Cycle01:49

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Related Experiment Video

Updated: May 19, 2026

Measurement of Greenhouse Gas Flux from Agricultural Soils Using Static Chambers
11:50

Measurement of Greenhouse Gas Flux from Agricultural Soils Using Static Chambers

Published on: August 3, 2014

Modelling terrestrial nitrous oxide emissions and implications for climate feedback.

Xu-Ri1, I Colin Prentice2,3, Renato Spahni4

  • 1Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, 100101, China.

The New Phytologist
|August 29, 2012
PubMed
Summary
This summary is machine-generated.

Global ecosystems release more nitrous oxide (N2O) due to warming and nitrogen deposition. This N2O emission has a positive climate feedback, potentially matching the carbon cycle feedback from soil CO2 release.

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Published on: September 6, 2018

Area of Science:

  • Environmental Science
  • Climate Science
  • Ecology

Background:

  • Ecosystem nitrous oxide (N2O) emissions are influenced by climate change, rising CO2 concentrations, and anthropogenic nitrogen (N) additions.
  • Understanding these drivers is crucial for predicting future climate feedbacks.

Purpose of the Study:

  • To quantify the impact of multiple environmental drivers on natural ecosystem N2O emissions.
  • To simulate global N2O emissions throughout the 20th century and analyze environmental change effects.

Main Methods:

  • Utilized a process-based global vegetation model (DyN-LPJ) to simulate N2O emissions.
  • Validated model outputs against worldwide field measurements and experimental responses.
  • Analyzed simulated global N2O emissions from the 20th century.

Main Results:

  • The model accurately reproduced global N2O emission patterns and responses to environmental factors.
  • Simulated 20th-century decadal-average soil N2O emissions ranged from 8.2-9.5 Tg N yr(-1).
  • Warming and N deposition significantly increased N2O emissions, with rising CO2 showing a positive interaction with warming.

Conclusions:

  • N2O emissions from natural ecosystems show a significant upward trend driven by climate change and N deposition.
  • The temperature dependence of N2O emission suggests a positive climate feedback.
  • This N2O feedback could become as significant as the climate-carbon cycle feedback over N2O's lifetime.