HOME >> BIOLOGY >> NEWS
Carbon sink or carbon source? Aerosols play role in shifts

Researchers at North Carolina State University have shown that the amount of aerosols dust particles, soot from automobile emissions and factories, and other airborne particles in the atmosphere has a significant impact on whether the surface area below either absorbs or emits more carbon dioxide (CO2).

The researchers discovered that changes in the levels of airborne aerosols resulted in changes to the terrestrial carbon cycle, or the cycle in which CO2 is absorbed by plant photosynthesis and then emitted by the soil.

Besides documenting the effects of aerosols on the carbon cycle, the research also showed that the type of landscape also influenced whether a surface area served as a carbon sink, an area that absorbs more CO2 than it emits, or as a carbon source, an area that emits more CO2 than it absorbs. In the research project, six locations across the United States encompassing forests, croplands and grasslands were studied. Increased amounts of aerosols over forests and croplands resulted in surface areas below becoming carbon sinks, but increased amounts of aerosols over grasslands resulted in surface areas becoming carbon sources.

Dr. Dev Niyogi, research assistant professor of marine, earth and atmospheric sciences at NC State and lead author of the study, hypothesizes that the differences among landscapes can be attributed to the amount of shade provided by tree and plant leaves in forests and croplands. The lack of shading in grasslands changes the ground surface temperature, which alters the rate of photosynthesis in plants and the CO2 emissions by soil. Since plants want to take in CO2 but also preserve water at the same time, Niyogi believes the lack of shade and increased temperatures may cause plants to slow the rate of photosynthesis, causing less CO2 to be absorbed and thus more CO2 to be effectively emitted. That would make the surface area a carbon source.

The research was published in Geophysical Research Let
'"/>


8-Dec-2004


Page: 1 2 3 4

Related biology news :

1. Tough tubes -- Carbon nanotubes endure heavy wear and tear
2. Carbon dioxide and the ocean
3. Carbon monoxide protects mice from multiple sclerosis
4. Carbon monoxide protects lung cells against oxygen-induced damage
5. On the cutting edge: Carbon nanotube cutlery
6. Carbon capture, water filtration, other boreal forest ecoservices worth estimated $250 billion/year
7. Carbon monoxide may help prevent debilitating pregnancy condition
8. Carbon cycle was already disrupted millions of years ago
9. Carbon monoxide inhibitor controls traumatic bleeding, Tulane University researchers show
10. Carbon nanotube absorption measured in worms, cancer cells
11. Carbon nanotubes that detect disease-causing mutations developed by Pitt researcher

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:1/24/2020)... (PRWEB) , ... January 24, 2020 , ... ... a partnership to mobilize Colorado’s capital resources to support early-stage bioscience companies in ... but early-stage startups have struggled to find the funding they need to innovate ...
(Date:1/23/2020)... ... 2020 , ... GIOSTAR/HEAMGEN has developed and secured ... The red blood cells are made utilizing a bioreactor that permits the production ... replaces the need for a human blood donor. GIOSTAR/HEAMGEN mature red ...
(Date:1/23/2020)... ... January 23, 2020 , ... ... new public-private Manufacturing USA initiative, the Advanced Regenerative Manufacturing Institute (ARMI). Headquartered ... brings together a consortium of over 100 partner organizations from industry, government, ...
Breaking Biology News(10 mins):
(Date:2/3/2020)... , ... February 03, 2020 , ... ... Financial Services Firm Travel, Law Firm Travel, Technology Industry Travel and Biotech/Healthcare Industry ... listed quarterly. Each Index illustrates the following statistics:, ...
(Date:1/28/2020)... ... January 28, 2020 , ... Lifecycle ... to food and beverage manufactures within North America. Both Lifecycle and Midland have ... will allow each company to pool their collective resources and provide the industry ...
(Date:1/28/2020)... ... January 28, 2020 , ... Today, ... Kits . The new Salivary Total Human IgG Assay Kit exemplifies ... G in saliva, researchers can extend the accuracy and ease of use of ...
(Date:1/27/2020)... ... January 27, 2020 , ... Valencell, the ... from strategic investors led by Halma plc , a FTSE 100 global ... Ventures, GII LLC, and WSJ Joshua Fund. A representative from Halma will join ...
Breaking Biology Technology:
Cached News: