HOME >> BIOLOGY >> NEWS
In tropics, forests are cool but croplands are hotter

While croplands may provide more food than forests, they don't offer much relief from hot tropical climes, a new study finds.

A study of Santa Cruz, Bolivia, which used NASA satellites and computer models, reports that cutting down tropical forests and converting grasslands to crops may inadvertently warm those local areas. According to the research, forest canopies create wind turbulence that cools the air, and native grasslands are better adapted to the tropics than crops, in ways that also have a cooling effect.

Lahouari Bounoua, a researcher at the University of Maryland (UMD), College Park, Md., and NASA's Goddard Space Flight Center (GSFC), Greenbelt, Md., used a computer model to show that temperatures in January may have warmed on average by about 1 degree Fahrenheit in the last 25 years, solely because native forests and grasslands in Santa Cruz were replaced with crops. Co-authors in this interdisciplinary study of land cover and climate changes included University of Maryland researcher, Ruth DeFries, NASA GSFC/UMD scientist Marc Imhoff and NASA GSFC researcher Marc Steininger.

"It's important to understand the effects of changing land cover in the tropics, because unlike the past, future deforestation is likely to occur in tropical and sub-tropical regions," said Bounoua.

The Santa Cruz region has one of the highest rates of concentrated deforestation in the world over the last 20 years, a recent study by co-author Steininger found.

According to the computer model, in places where tropical forest species were replaced by crops, nighttime temperatures dropped slightly, while daytime local temperatures rose by 3.6 degrees Fahrenheit (F) or 2 degrees Celsius. Forests have high canopies with varied surfaces, and the movement of winds over these rough surfaces creates turbulence and cools the air. Low, even croplands on the other hand create less turbulence from winds and don't cool the air as much, the researcher
'"/>

Contact: Krishna Ramanujan
kramanuj@pop900.gsfc.nasa.gov
301-286-3026
NASA/Goddard Space Flight Center
21-Aug-2003


Page: 1 2

Related biology news :

1. New England forests at greater risk from air pollution
2. Warmer weather, human disturbances interact to change forests
3. Deserts and rainforests are equally productive during drought
4. Undisturbed Amazonian forests are changing, say scientists
5. Rwandas primate-rich forests now a national park
6. Duke open-air experiment results could deflate hopes that forests can alleviate global warming
7. Satellites spy deaths in rain forests (Clark et al.)
8. Professor uses satellites to protect Amazon forests, global climate
9. Squirrel invasion sows seeds of change for future forests
10. UGA researchers track greenhouse gases in forests
11. A realistic way to save rainforests

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


(Date:4/5/2017)... LONDON , April 4, 2017 KEY ... is anticipated to expand at a CAGR of 25.76% ... neurodegenerative diseases is the primary factor for the growth ... full report: https://www.reportbuyer.com/product/4807905/ MARKET INSIGHTS The ... of product, technology, application, and geography. The stem cell ...
(Date:3/30/2017)... Trends, opportunities and forecast in this market ... (fingerprint, AFIS, iris recognition, facial recognition, hand geometry, vein ... use industry (government and law enforcement, commercial and retail, ... others), and by region ( North America ... Pacific , and the Rest of the World) ...
(Date:3/24/2017)... Mar 24, 2017 Research and Markets has ... Market Analysis & Trends - Industry Forecast to 2025" report ... ... at a CAGR of around 15.1% over the next decade to ... report analyzes the market estimates and forecasts for all the given ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... ... October 11, 2017 , ... ... granted orphan drug designation to SBT-100, its novel anti-STAT3 (Signal Transducer and Activator ... osteosarcoma. SBT-100 is able to cross the cell membrane and bind intracellular STAT3 ...
(Date:10/10/2017)... PA (PRWEB) , ... October 10, 2017 , ... ... City Science Center’s FirstHand program has won a US2020 STEM Mentoring Award. Representatives ... the award for Excellence in Volunteer Experience from US2020. , US2020’s mission is ...
(Date:10/10/2017)... 10, 2017 SomaGenics announced the receipt of ... develop RealSeq®-SC (Single Cell), expected to be the first ... (including microRNAs) from single cells using NGS methods. The ... to accelerate development of approaches to analyze the heterogeneity ... "New techniques for measuring levels of mRNAs in individual ...
(Date:10/9/2017)... DIEGO , Oct. 9, 2017  BioTech ... biological mechanism by which its ProCell stem cell ... critical limb ischemia.  The Company, demonstrated that treatment ... amount of limbs saved as compared to standard ... the molecule HGF resulted in reduction of therapeutic ...
Breaking Biology Technology:
Cached News: