Discrepancies about soil degradation. (Commentary).

Environment | September 1, 2002 | Copyright

I read with interest the clear report of David Niemeijer and Valentina Mazzucato's findings on soil degradation in the Sahel region of West Africa in the March 2002 issue of Environment. (1) Their data are convincing, and it can be agreed that there is a need for more thorough work on the subject. However, the discrepancies that the authors highlight between their results (which dispute widespread degradation) and earlier, more broad-scale work based on modeling and limited field data are only apparent rather than real.

Arable land (and some permanent crops) covered ...

Read all of this article with a FREE trial to HighBeam Research

Related newspaper, magazine, and trade journal articles from HighBeam Research

(Including press releases, facts, information, and biographies)

Bridges.
Magazine article from: Science Weekly ; ...called the deck. Bridges must be very strong and sturdy. A bridge not only has to...s Golden Gate Bridge. DID YOU KNOW?? Some bridges are built on a row...to use for each bridge they build. For centuries, bridges have been constructed...
Bridge effort in 'holding pattern' as legal issue looms.
Newspaper article from: Columbia Daily Tribune (Columbia, MO) ; ...Paula Shannon thinks the old rail bridge over the Missouri River in Boonville has...breathtaking when you are standing out on the bridge in the middle of the river," she said...Missouri." Shannon is the chair of the Katy Bridge Steering Committee, a group working to...
Bridges safe in Fox Valley, reports show
Newspaper article from: Courier News (Elgin, IL) ; ...of Transportation bridge inspection records for bridges in the area spanning...rehab their older bridges. In Batavia, the William J. Donovan Bridge spanning the Fox...and the U.S. 30 bridge in Montgomery. All of those bridges scored 7s in their...
Could bridges collapse here? Inspections find 52 structurally deficient in Lake, Porter counties\
Newspaper article from: Post-Tribune (IN) ; ...not talking about bridges over the Mississippi...even the tiniest bridge crosses an expanse...qualify for federal bridge repair funding. But much bigger bridges in Northwest Indiana...maintaining about 5,700 bridges around the state...frighteningly insecure new bridge connects ...
2 BRIDGES ON DETOURS SHOWED SIGNS OF WEAR.(Local)
Newspaper article from: Albany Times Union (Albany, NY) ; ...writer Two of the bridges on the detour routes...collapsed state Thruway bridge were rated as showing...the Route 20 and 5S bridges had been closed at the time the Thruway bridge collapsed because...was the Old Route 5 Bridge over Caroga Creek...officials said. The bridges were ...
5 BRIDGES GET STATE'S WORST RATING.(Main)
Newspaper article from: Albany Times Union (Albany, NY) ; ...the Babcock Road bridge across Dayfoot...Petersburg and two bridges which carry Factory...Brook. These bridges all received...checked by state bridge inspectors in...various parts of the bridge. While the inspectors gave the bridges the lowest possible...
Bridges on Metro Extension Examined;Cracks, Flaking May Set Back Van Dorn Opening, Official Says
Newspaper article from: The Washington Post ; ...concerned about other bridges in the existing 69...method was used on one bridge near the future West...Alexander said. A third bridge, built by the same method...any problems with that bridge. The three bridges are part of the 3.74...
Bridges get a closer look; State officials conducting inspections at 14 locations.(NEWS)
Newspaper article from: Telegram & Gazette (Worcester, MA) ; ...on at least eight bridges, including the Rollstone Bridge over the Nashua River...Administration's bridge database. Bridges across the country...structurally deficient bridges." Depending on...and condition of a bridge, inspections can...
THE BRIDGE LADY PORTSMOUTH ENGINEER WANT TO SAVE STATE'S REMAINING COVERED SPANS.(DAILY BREAK)
Newspaper article from: The Virginian Pilot ; ...personalities of the bridges - punctuates the...Despite working with bridge design for 30 years, the retired bridge engineer first discovered covered bridges only a few years...eight covered bridges, especially the 1916 Sinking Creek Bridge, near Newport...
Bridge workers' job is never done.
Newspaper article from: Post and Courier (Charleston, SC) ; ...percent of its 9,168 bridges, according to a...earlier this year. A bridge is deemed substandard...Silas N. Pearman bridges doesn't engender...keep up with the new bridge's maintenance needs...crews to spend on one bridge without neglecting the other 1,100 bridges in the six-county...

Find more facts and information related to the article "Discrepancies about soil degradation. ..."