Featured Research

from universities, journals, and other organizations

Elevated Atmospheric Carbon Dioxide Increases Soil Carbon

Date:
December 6, 2005
Source:
Blackwell Publishing Ltd.
Summary:
An article in the current issue of Global Change Biology indicates that soils in temperate ecosystems might contribute more to partially offsetting the effects of rising atmospheric carbon dioxide concentrations than earlier studies have suggested.

An article in the current issue of Global Change Biology indicates that soils in temperate ecosystems might contribute more to partially offsetting the effects of rising atmospheric CO2 concentrations than earlier studies have suggested.

Because higher CO2 concentrations usually stimulate plant growth, a parallel accumulation of soil carbon derived from decaying roots and other plant material might also be expected. Yet nearly all elevated CO2 experiments to date have failed to detect changes in soil carbon against the large and variable background of existing soil organic matter, leading to predictions that increased deposits of dead plant material will decompose rapidly with little accumulation of carbon in soil.

In a study funded by the U.S. Department of Energy's Office of Science, researchers from Argonne and Oak Ridge National Laboratories and Kansas State and Texas A&M Universities evaluated the collective results of earlier studies by using a statistical procedure called meta-analysis. They found that on average elevated CO2 increased soil carbon by 5.6 percent over a two to nine year period. They also measured comparable increases in soil carbon for Tennessee deciduous forest and Kansas grassland after five to eight years of experimental exposure to elevated CO2.

"We were able to see measurable carbon accumulation within a relatively short time period because the vegetation at both of our sites responded to elevated CO2 with large increases in root growth," said Argonne's Julie Jastrow, the study's lead author. "We also found over half of the accumulated carbon was associated with soil minerals in stable aggregates, which can protect organic matter from rapid decomposition. This suggests that some of the carbon added to these soils could stick around for awhile."



Story Source:

The above story is based on materials provided by Blackwell Publishing Ltd.. Note: Materials may be edited for content and length.


Cite This Page:

Blackwell Publishing Ltd.. "Elevated Atmospheric Carbon Dioxide Increases Soil Carbon." ScienceDaily. ScienceDaily, 6 December 2005. <www.sciencedaily.com/releases/2005/12/051206085941.htm>.
Blackwell Publishing Ltd.. (2005, December 6). Elevated Atmospheric Carbon Dioxide Increases Soil Carbon. ScienceDaily. Retrieved April 17, 2014 from www.sciencedaily.com/releases/2005/12/051206085941.htm
Blackwell Publishing Ltd.. "Elevated Atmospheric Carbon Dioxide Increases Soil Carbon." ScienceDaily. www.sciencedaily.com/releases/2005/12/051206085941.htm (accessed April 17, 2014).

Share This



More Plants & Animals News

Thursday, April 17, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Change of Diet Helps Crocodile Business

Change of Diet Helps Crocodile Business

Reuters - Business Video Online (Apr. 16, 2014) Crocodile farming has been a challenge in Zimbabwe in recent years do the economic collapse and the financial crisis. But as Ciara Sutton reports one of Europe's biggest suppliers of skins to the luxury market has come up with an unusual survival strategy - vegetarian food. Video provided by Reuters
Powered by NewsLook.com
Could Even Casual Marijuana Use Alter Your Brain?

Could Even Casual Marijuana Use Alter Your Brain?

Newsy (Apr. 16, 2014) A new study conducted by researchers at Northwestern and Harvard suggests even casual marijuana use can alter your brain. Video provided by Newsy
Powered by NewsLook.com
Thousands Of Vials Of SARS Virus Go Missing

Thousands Of Vials Of SARS Virus Go Missing

Newsy (Apr. 16, 2014) A research institute in Paris somehow misplaced more than 2,000 vials of the deadly SARS virus. Video provided by Newsy
Powered by NewsLook.com
Raw: Three Rare White Tiger Cubs Debut at Zoo

Raw: Three Rare White Tiger Cubs Debut at Zoo

AP (Apr. 16, 2014) The Buenos Aires Zoo debuted a trio of rare white Bengal tiger cubs on Wednesday. (April 16) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins