Featured Research

from universities, journals, and other organizations

Labor-saving way to monitor vast rangelands

Date:
September 29, 2011
Source:
United States Department of Agriculture - Research, Education and Economics
Summary:
U.S. agricultural scientists have found that unmanned aerial vehicles (UAVs), a tool used by the military, may be suitable for keeping an eye on changing land-use patterns across vast tracts of western rangeland.

At the Jornada Experimental Range in Las Cruces, New Mexico, a team of scientists prepares to launch an unmanned aerial vehicle from a catapult. The mission: to survey vegetation on the ground in studies of vegetation changes over time. In the foreground are engineering technician Craig Winters (left) and pilot Dave Thatcher. Other researchers are in the ground control station.
Credit: Photo by Stephen Ausmus

U.S. Department of Agriculture (USDA) scientists have found that unmanned aerial vehicles (UAVs), a tool used by the military, may be suitable for keeping an eye on changing land-use patterns across vast tracts of western rangeland.

Ranchers, government agencies and private land managers often need to survey vast, remote rangelands to see how they are being altered by floods, forest fires or other events. Ground-based surveys can be costly and time-consuming. Satellite imagery is improving, but satellites can't provide the resolution needed by the Bureau of Land Management (BLM) for its assessments of millions of acres of federally owned lands, or by private land owners who want to monitor erosion control, the creep of invasive species, or other land-use changes. UAVs allow operators to survey large areas whenever they want, such as immediately after a major rain storm or forest fire.

At the Agricultural Research Service (ARS) Jornada Experimental Range in Las Cruces, N.M., Al Rango, Jeff Herrick and Craig Winters, along with Andrea Laliberte, a New Mexico State University researcher, are studying the potential effectiveness of a 20-pound UAV with a 6-foot wingspan that cruises 700 feet above the ground, collecting digital images.

ARS is USDA's principal intramural scientific research agency, and this work supports the USDA priority of improving agricultural sustainability.

UAVs are primarily being studied for their potential to collect enough information about landscape patterns to determine which areas merit closer ground level surveys, according to Laliberte.

In a study partially funded by BLM, the researchers took more than 400 aerial images of 700 acres in the Reynolds Creek Experimental Watershed in southwestern Idaho. They assembled the images into mosaics, determined the percentage of vegetation cover using image-processing techniques and compared the data to information collected with conventional ground-based techniques. In a second study, they analyzed the classification accuracy of different types of vegetation, such as mesquite and yucca plants, identified by a computer program designed to analyze mosaics assembled from hundreds of images taken during flights over tracts in Idaho and New Mexico.

Findings from the first study were published in Photogrammetric Engineering and Remote Sensing, and those from the second study were published in Geocarto International. In both studies, the researchers found the aerial data sufficiently accurate to be comparable to information gathered in ground-based surveys for shrubs, grasses and other plants that can be distinguished by their top canopy layer.

Current federal safety requirements and associated costs limit use of UAVs, but the restrictions may change in the future. This research is designed to ensure strengths and weaknesses of the technology are sufficiently understood regardless of the regulations.

Read more about this research in the September 2011 issue of Agricultural Research magazine at: http://www.ars.usda.gov/is/AR/archive/sep11/land0911.htm


Story Source:

The above story is based on materials provided by United States Department of Agriculture - Research, Education and Economics. The original article was written by Dennis O'Brien. Note: Materials may be edited for content and length.


Cite This Page:

United States Department of Agriculture - Research, Education and Economics. "Labor-saving way to monitor vast rangelands." ScienceDaily. ScienceDaily, 29 September 2011. <www.sciencedaily.com/releases/2011/09/110927124655.htm>.
United States Department of Agriculture - Research, Education and Economics. (2011, September 29). Labor-saving way to monitor vast rangelands. ScienceDaily. Retrieved April 23, 2014 from www.sciencedaily.com/releases/2011/09/110927124655.htm
United States Department of Agriculture - Research, Education and Economics. "Labor-saving way to monitor vast rangelands." ScienceDaily. www.sciencedaily.com/releases/2011/09/110927124655.htm (accessed April 23, 2014).

Share This



More Plants & Animals News

Wednesday, April 23, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Monkeys Are Better At Math Than We Thought, Study Shows

Monkeys Are Better At Math Than We Thought, Study Shows

Newsy (Apr. 23, 2014) A Harvard University study suggests monkeys can use symbols to perform basic math calculations. Video provided by Newsy
Powered by NewsLook.com
Raw: Leopard Bites Man in India

Raw: Leopard Bites Man in India

AP (Apr. 22, 2014) A leopard caused panic in the city of Chandrapur on Monday when it sprung from the roof of a house and charged at rescue workers. (April 22) Video provided by AP
Powered by NewsLook.com
Iowa College Finds Beauty in Bulldogs

Iowa College Finds Beauty in Bulldogs

AP (Apr. 22, 2014) Drake University hosts 35th annual Beautiful Bulldog Contest. (April 21) Video provided by AP
Powered by NewsLook.com
805-Pound Shark Caught Off The Coast Of Florida

805-Pound Shark Caught Off The Coast Of Florida

Newsy (Apr. 22, 2014) One Florida fisherman caught a 805-pound shark off the coast of Florida earlier this month. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins