Navigation Links
First-ever 'State of the Carbon Cycle Report' finds troubling imbalance
Date:11/14/2007

The first State of the Carbon Cycle Report for North America, released online this week by the U.S. Climate Change Science Program, finds the continents carbon budget increasingly overwhelmed by human-caused emissions. North American sources release nearly 2 billion tons of carbon into the atmosphere each year, mostly as carbon dioxide. Carbon sinks such as growing forests may remove up to half this amount, but these current sinks may turn into new sources as climate changes.

By burning fossil fuel and clearing forests human beings have significantly altered the global carbon cycle, says Chris Field of the Carnegie Institutions Department of Global Ecology, one of the reports lead authors. A result has been the buildup of carbon dioxide in the atmosphere, but so far this has been partially offset by carbon uptake by the oceans and by plants and soils on land.

In effect, we have been getting a huge subsidy from these unmanaged parts of the carbon cycle, notes Field. Overall, this subsidy has sequestered, or hidden from the atmosphere, approximately 200 billion tons of carbon. In North America much of it has come from the regrowth of forests on former farmland and the uptake of carbon by agricultural soils.

But these carbon sinks may be reaching their limit as forests mature and climate conditions change. And some may literally go up in smoke if wildfires become more frequent, as some climate simulations predict. Planting forests and adopting carbon-conserving practices such as no-till agriculture may increase carbon sinks somewhat, but this would not come close to compensating for carbon emissions, which continue to accelerate.

There are a lot of good reasons for replenishing our forests and encouraging better agricultural practices, says Ken Caldeira, another author of the report, also at Carnegies Department of Global Ecology. But if we want to mitigate our impact on the carbon cycle, theres no escaping the fact that we need to drastically reduce carbon dioxide emissions.


'/>"/>

Contact: Chris Field
cfield@globalecology.stanford.edu
650-462-1047 x201
Carnegie Institution
Source:Eurekalert

Related biology news :

1. First-ever study: lack of critical lubricant causes wear in joints
2. Obesity and the central nervous system -- the state of the art
3. University of Minnesota study refutes belief that black men have more aggressive prostate cancer
4. Iowa State University conference examines developing bioeconomy
5. University and state agencies to forecast local health effects of climate change
6. K-State Veterinary Lab routinely tests for bluetongue virus
7. New prostate cancer research findings
8. Iowa State professors genome research published in the latest issue of Science
9. Leading researchers to reveal comprehensive dos and donts for prostate cancer
10. K-State chemistry professor to receive Masao Horiba award
11. K-State sociologists use Department of Energy grant
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/11/2017)... April 11, 2017 No two people ... at the New York University Tandon School of ... have found that partial similarities between prints are ... in mobile phones and other electronic devices can ... The vulnerability lies in the fact that fingerprint-based ...
(Date:4/5/2017)... 5, 2017  The Allen Institute for Cell Science ... a one-of-a-kind portal and dynamic digital window into the ... the first application of deep learning to create predictive ... lines and a growing suite of powerful tools. The ... and future publicly available resources created and shared by ...
(Date:4/4/2017)... , April 4, 2017   EyeLock LLC ... announced that the United States Patent and Trademark Office ... broadly covers the linking of an iris image with ... transaction) and represents the company,s 45 th issued ... patent is very timely given the multi-modal biometric capabilities ...
Breaking Biology News(10 mins):
(Date:9/14/2017)... Ind (PRWEB) , ... September ... ... AMRI’s Global Analytical Services, formally introduces its flexible scientist program (FSP)-- a ... volume-based, preferred-rate pricing. The FSP, which combines SSCI’s extensive project-based analytical and ...
(Date:9/14/2017)... ... 14, 2017 , ... One of the world’s largest World Marrow Donor Day ... hours that day, the GenCure Marrow Donor Program will be signing up potential donors ... in San Antonio. , The registration tables will be staffed by employees from all ...
(Date:9/12/2017)... ... September 12, 2017 , ... ... highly scalable cloud-based platform for ambulatory patient monitoring and clinical trial support, earned ... Clinical Trials conference in Boston. , Launched in 2005, PhysIQ leverages artificial ...
(Date:9/12/2017)... (PRWEB) , ... September 12, 2017 , ... ... is extremely pleased to announce that Jeremy Nicholson, Head of the Department of ... Medicine, will deliver the 2018 Wallace H. Coulter Lecture. His presentation, “Analytical ...
Breaking Biology Technology: