Navigation Links
How grazing lands influence greenhouse gas
Date:5/18/2010

MADISON, WI, May 17th, 2010 Grazinglands represent one of the largest land resources in the world, yet their role as net sinks or sources of greenhouse gases is essentially unknown. Previous research has emphasized the role of grazing management on the sequestration of atmospheric carbon dioxide as soil organic carbon. However, there is a lack of information regarding how grazing management impacts the flux of two potent GHGs, nitrous oxide and methane.

A team of scientists lead by Mark Liebig at the USDA-ARS Northern Great Plains Research Laboratory estimated net global warming potential for three grazing management systems located in central North Dakota. The grazing management systems represented two native vegetation pastures under medium and high grazing pasture management, and a heavily grazed seeded crested wheatgrass pasture receiving supplemental nitrogen. The results indicate that grazinglands are strong sinks of soil organic carbon and minor sinks of methane, but small to moderate sources of nitrous oxide. Results from the study were published in the May-June 2010 issue of Journal of Environmental Quality, published by the America Society of Agronomy, the Crop Science Society of America, and the Soil Science Society of America.

Net global warming potential for the native grasslands was negative, implying an overall removal of greenhouse gases from the atmosphere. This finding underscores the value of grazed, mixed-grass prairie as a viable agroecosystem to serve as a net greenhouse gas sink in the northern Great Plains. Conversely, the seeded forage nitrous oxide emissions were nearly three times that of the native grasses, which contributed a net positive net global warming potential, implying net greenhouse gas emission to the atmosphere.

The research team was able to estimate global warming potential for each management practice by measuring changes in soil organic carbon, and nitrous oxide and methane flux. This data was combined with estimates for methane emissions from cattle and carbon dioxide emissions associated with applying nitrogen fertilizer.

"It's important to keep in mind the greenhouse gas balance we measured for the grazing treatments falls short of encompassing the full life-cycle of a steer," said Mark Liebig. "While our results suggest grazed native vegetation in the northern Great Plains is a net GHG sink, we need to acknowledge there is additional greenhouse gas emissions associated with cattle production outside of what we measured or estimated."


'/>"/>

Contact: Sara Uttech
suttech@sciencesocieties.org
608-268-4948
American Society of Agronomy
Source:Eurekalert  

Related biology news :

1. Grazing animals help spread plant disease
2. Alperujo -- a beneficial complement in diet of dairy sheep during non-grazing periods
3. ARS scientists study effects of grazing on grouse habitat
4. Midlands Consortium delighted to be chosen to host £1 billion energy institute
5. Researchers expand efforts to explore functional landscape of the human genome
6. Genome update defines landscape of breast and colon cancers
7. Genome study charts genetic landscape of lung cancer
8. First wind turbines on Galapagos Islands will halve diesel imports, reduce risk of future oil spills
9. Rats on islands disrupt ecosystems from land to sea, researchers find
10. Catcher Holdings Inc. Lands Contract for Initial Deployments at Nine Homeland Security and State Government Agencies
11. Pioneering landscape-scale research releases first findings
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
How grazing lands influence greenhouse gas
(Date:4/3/2017)... 3, 2017  Data captured by IsoCode, ... detected a statistically significant association between the ... treatment and objective response of cancer patients ... predict whether cancer patients will respond to ... well as to improve both pre-infusion potency testing ...
(Date:3/30/2017)... KONG , March 30, 2017 The ... a system for three-dimensional (3D) fingerprint identification by adopting ground breaking ... into a new realm of speed and accuracy for use in ... at an affordable cost. ... ...
(Date:3/29/2017)... , March 29, 2017  higi, the health IT ... North America , today announced a ... the acquisition of EveryMove. The new investment and acquisition ... of tools to transform population health activities through the ... data. higi collects and secures data today ...
Breaking Biology News(10 mins):
(Date:5/23/2017)... ... May 22, 2017 , ... ... in San Diego, California, this August will feature high-level speakers on quantum ... vehicles. , SPIE Optics and Photonics, the largest multidisciplinary optical sciences meeting in ...
(Date:5/23/2017)... ... May 23, 2017 , ... Bacterial biofilms, surface adherent communities of bacteria ... pathologies ranging from food poisoning and catheter infections to gum disease and the rejection ... of billions of dollars per year, there is currently a paucity of means for ...
(Date:5/22/2017)... ... May 22, 2017 , ... Baltimore biotech firm, ... Maryland Biohealth community in developing and issuing recommendations to grow Maryland's biohealth industry ... Hub by 2023. , The recommendations are contained in a ...
(Date:5/19/2017)... York (PRWEB) , ... May 19, 2017 , ... In ... in treating gait disorders, Biodex Medical Systems, Inc. announces the release of their Gait ... therapy has been joined with a biomedical system to aid in rehabilitating individuals with ...
Breaking Biology Technology: