HOME >> BIOLOGY >> NEWS
High-flying observatory reveals land changing to desert

Stanford, CA. Using advanced remote-sensing techniques from a U-2 surveillance plane and field studies, scientists from the Carnegie Institution Department of Global Ecology have for the first time determined large-scale interactions between ecosystems and the climate during the process of desertification. The study, to be published in the January 2005 issue of Global Change Biology, is a milestone both for the new methods employed and for understanding what is happening as agricultural and grazing lands change into desert--a top environmental worry of the United Nations.

"Grazing is the major form of land use on the planet, with the dry, semi-arid, and sub-humid regions supporting most of it throughout the world," explained Dr. Gregory Asner, lead author at Carnegie. "Some of these regions are turning into unusable desert so quickly that the United Nations has put the problem at the top of its environmental agenda. The challenge for science--to understand what is happening to ecosystems during desertification--has been enormous because the areas are so vast it is impossible to study the processes at the field level alone. Our five-year project in the Northern Chihuahua region of New Mexico has successfully shown how the NASA Airborne Visible and Infrared Imaging Spectrometer (AVIRIS), aboard a NASA U-2, can be used to analyze the vegetation and soil changes in response to rain variation over large areas. I believe that the technique could become a standard for future global desertification studies."

Typically, remote-sensing for ecological research looks at the greenness of the top layer of vegetation, which is used to determine the amount of plant growth, or net primary production (NPP). NPP data are useful for understanding the global carbon cycle as plants breath in and lock up the greenhouse gas CO2 . NPP data, though, are not as important as are the changes in the type and distribution of vegetation as an area transitions into desert. Usi
'"/>

Contact: Gregory Asner
gasner@globalecology.stanford.edu
650-380-2828
Carnegie Institution
20-Dec-2004


Page: 1 2 3

Related biology news :

1. High-flying satellites give land managers the low-down on cheatgrass
2. $20 million to expand seafloor observatory
3. Seafloor observatory opens portal to the Pacific
4. UVic unveils worlds most advanced seafloor observatory
5. University of Victoria offers sneak peek at new seafloor observatory
6. Satellite tracking reveals threats to Borneo pygmy elephants
7. New technology reveals seal behavior
8. Innovative research technique reveals another natural wonder in Yellowstone Park
9. Mathematics reveals genetic pattern of tumor growth
10. CU study reveals why starling females cheat
11. New collaborative research reveals chimpanzees can sustain multiple-tradition cultures

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


(Date:10/26/2019)... , ... October 24, 2019 , ... World Cord Blood ... parents, doctors, nurses, and midwives to learn about the current and future uses of ... Cord blood is now being used to treat and cure over 80 different life-threatening ...
(Date:10/26/2019)... ... October 25, 2019 , ... The ... in La Plata, MD. Orofacial myofunctional disorders (OMDs) are abnormal movement patterns of ... speaks. This can include anything from difficulty swallowing and limited tongue movement to ...
(Date:10/22/2019)... ... October 22, 2019 , ... Greenberg Traurig, LLP’s global ... Deal Making in the Life Sciences Sector,” with German biotech strategy consulting firm, Catenion. ... at Greenberg Traurig’s Tokyo office . , Speakers from Greenberg Traurig and Catenion ...
Breaking Biology News(10 mins):
(Date:11/2/2019)... TORONTO (PRWEB) , ... October 31, 2019 , ... ... at Adaptive Biotechnologies in a live webinar on Friday, ... application in immuno-oncology. , Immunosequencing, the science of profiling T-cell receptors (TCRs) ...
(Date:10/30/2019)... ... , ... While using cold plasma to kill cancer cells isn’t an entirely ... Mines & Technology are exploring new ways to regulate cold plasma technology to ... the technique would prove to be a drug-free, minimally invasive cancer treatment that would ...
(Date:10/29/2019)... ... ... CaroGen Corporation , a biotechnology company, today announced three distinguished additions ... Wands, MD, of Brown University , Dr. Steve Projan, PhD, FAAM, formerly ... of Wayne State University, formerly a professor at Yale University School of Medicine ...
(Date:10/29/2019)... Mass. (PRWEB) , ... October 29, 2019 , ... ... spectral signature of the skin*. Using Silios CMS-C multispectral imagers , researchers ... new approach can replace identification based on retinal imaging, face recognition, fingerprints and ...
Breaking Biology Technology:
Cached News: