Related Experiment Video
Updated: Aug 9, 2026
07:46
Temperature Response of Soil Organic Matter Decomposition Rates: Construction and Applications of a Temperature Gradient Block
Published on: January 30, 2026
Temperature influences carbon accumulation in moist tropical forests
James W Raich1, Ann E Russell, Kanehiro Kitayama
1Department of Ecology, Evolution and Organismal Biology, Iowa State University, Ames 50011, USA. jraich@iastate.edu
Ecology
|April 26, 2006
Summary
Warmer temperatures boost tropical forest productivity and biomass but decrease soil carbon storage. This shift highlights the importance of conserving forest biomass for maintaining carbon stocks in a warming climate.
Area of Science:
- Ecology
- Climate Science
- Forestry
Background:
- Tropical evergreen forests are significant carbon sinks.
- Climate warming may alter forest carbon dynamics.
Purpose of the Study:
- To evaluate temperature's effect on carbon fluxes and storage in moist tropical evergreen forests.
- To understand how mean annual temperature (MAT) influences ecosystem processes.
Main Methods:
- Meta-analysis of published data on tropical forest ecosystems.
- Statistical evaluation of carbon fluxes (productivity, decomposition) and storages (biomass, soil organic matter) against MAT.
Main Results:
- Net primary productivity (NPP), litter production, tree growth, and forest biomass increased with MAT.
- Soil organic matter accumulation and litter turnover rates decreased with MAT.
- Total carbon storage showed no net change, but ecosystem structure shifted towards higher biomass and lower detritus in warmer forests.
Conclusions:
- Warmer temperatures increase tropical forest productivity and biomass but reduce soil carbon stocks.
- Ecosystem structure shifts from detritus-dominated to biomass-dominated with increasing temperature.
- Forest biomass conservation is crucial for maintaining carbon stocks in moist tropical forests under climate warming.
Related Concept Videos
01:14The Carbon Cycle
Carbon is the basis of all organic matter on Earth, and is recycled through the ecosystem in two primary processes: one in which carbon is exchanged among living organisms, and one in which carbon is cycled over long periods of time through fossilized organic remains, weathering of rocks, and volcanic activity. Human activities, including increased agricultural practices and the burning of fossil fuels, has greatly affected the balance of the natural carbon cycle.
01:27Microbes 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...
01:50Global Climate Change
Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
01:24Microbes and the Carbon Cycle
The carbon cycle is a fundamental Earth process involving the transfer of carbon among the biosphere, lithosphere, atmosphere, and hydrosphere. It plays a critical role in regulating the planet’s climate and supporting life by cycling carbon through various chemical forms and reservoirs. Carbon primarily circulates as carbon dioxide (CO₂), representing its oxidized form, while reduced forms such as methane (CH₄) and organic compounds also play essential roles.Microbial activity is central to...
01:16What is Climate?
Climate refers to the prevailing weather conditions in a specific area over an extended period. As the saying goes, “Climate is what you expect. Weather is what you get.” Climate is influenced by geographic factors, such as latitude, terrain, and proximity to bodies of water.
02:04Regulation of Transpiration by Stomata
During photosynthesis, plants acquire the necessary carbon dioxide and release the produced oxygen back into the atmosphere. Openings in the epidermis of plant leaves is the site of this exchange of gasses. A single opening is called a stoma—derived from the Greek word for “mouth.” Stomata open and close in response to a variety of environmental cues.