Free Newsletters - Space News - Defense Alert - Environment Report - Energy Monitor
. Earth Science News .




WATER WORLD
Study Shows Reforestation along Rivers and Streams in Lower Mississippi Alluvial Valley Reduces Sediment Runoff
by Staff Writers
Asheville NC (SPX) Dec 05, 2013


File image.

A modeling study by U.S. Forest Service researchers shows that reforesting the Lower Mississippi Alluvial Valley can significantly reduce runoff from agricultural lands and the amount of sediment entering the area's rivers and streams-and ultimately the Gulf of Mexico.

The Lower Mississippi Alluvial Valley, located in the historic floodplain of the Mississippi River, stretches from Cairo, Illinois south to the Gulf of Mexico. One of the largest coastal and river basins in the world, the area is also one of the most affected by floods, erosion, and sediment deposition as a result of more than a century of converting bottomland hardwood forests to agricultural lands.

Sediments from frequently flooded agricultural lands often carry pesticides and fertilizers, the latter associated with the formation of the hypoxic (low oxygen) dead zone in the Gulf of Mexico. Forest buffers reduce runoff and sediment load from flooded agricultural lands; in the Lower Mississippi Alluvial Valley, the frequently flooded agricultural land in the batture (land that lies between a river and its levees, pronounced batch-er) seems a prime site to start reforestation efforts.

The U.S. Endowment for Forestry and Communities (the Endowment) commissioned the study, and co-funded it with Forest Service State and Private Forestry. "This study provides further evidence of the key role forests play in flood control and in reducing sediment flow from agricultural lands into our watersheds," notes Carlton Owen, president and CEO of the Endowment.

"The new forest areas would also provide regional economic and environmental benefits by not only improving water quality but also wildlife habitat and recreational opportunities."

The researchers chose two Lower Mississippi River Alluvial Valley watersheds-the large Lower Yazoo River Watershed and the smaller Peters Creek Watershed-to model the effects of reforestation in or near the battures on water outflow and sediment load (the amount of solid material carried by a river or stream).

They performed two simulations, the first to predict water outflow and sediment load without reforestation, the second to project over 10 years the potential impacts of converting different levels-25, 50, 75, and 100 percent-of the land to forest in or near the battures.

"Comparing simulation results with and without reforestation showed that converting agricultural lands close to streams into forests would greatly lessen water outflow and reduce the effects of sediment load as far as the Gulf of Mexico," says Ouyang, lead author of the article and research hydrologist at the SRS Center for Bottomland Hardwoods Research.

"In general, the larger the area converted, the greater the effect. For the Lower Yazoo River watershed, a two-fold increase in forest land area would result in approximately a two-fold reduction in the annual volume of water outflow and the mass of sediment load moving into the river."

The journal Ecological Engineering recently published the results of the study by Forest Service Southern Research Station scientists Ying Ouyang, Ted Leininger, and Matt Moran. Read the full text of the study here

.


Related Links
Southern Research Station
Water News - Science, Technology and Politics






Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News





WATER WORLD
Press Release: Using moving cars to measure rainfall
Hanover, Germany (SPX) Dec 05, 2013
Drivers on a rainy day regulate the speed of their windshield wipers according to rain intensity: faster in heavy rain and slower in light rain. This simple observation has inspired researchers from the University of Hanover in Germany to come up with 'RainCars', an initiative that aims to use GPS-equipped moving cars as devices to measure rainfall. The most recent results of the project a ... read more


WATER WORLD
Late treatment for many Philippine typhoon victims: WHO

Human trafficking a worry in post-typhoon Philippines: US

China graft investigation into ex-head of quake city

UN to seek more aid for Philippines typhoon displaced

WATER WORLD
Mission possible: Simulation-based training and experimentation on display

Uncovering hidden structures in massive data collections

Telescope to track space junk using youth radio station

USMC Conducts Operational Assessment of GATOR System

WATER WORLD
Press Release: Using moving cars to measure rainfall

Study Shows Reforestation along Rivers and Streams in Lower Mississippi Alluvial Valley Reduces Sediment Runoff

Microplastics make marine worms sick

Marine reserves enhance resilience to climate change

WATER WORLD
Arctic development 'a new menace to polar bears'

Arctic study shows key marine food web species at risk from increasing CO2

'Noisy' glaciers sound off as they melt into ocean waters

Russian court frees last Greenpeace activist

WATER WORLD
Benefit of bees even bigger than thought: food study

Romania sees opportunity in China's new taste for meat

Flower Power - Researchers breed new varieties of chamomile

A plant which acclimatizes with no exterior influence

WATER WORLD
One dead, 19,000 evacuated in Malaysia floods

NASA's HS3 Hurricane Mission Called it a Wrap for 2013

What drives aftershocks?

Heavy rains, flooding leave two dead in Cuba

WATER WORLD
Mali defence minister vows to support coup leader's trial

French army buildup in CAR unlikely to quell bloodshed

Several said dead in air raid in Sudan's Darfur: peacekeepers

Nigeria military says bombed Boko Haram camps

WATER WORLD
Evidence of funerary meal found at 13,000-year-old gravesite in Israel

Skull find shows women were sacrificed in ancient China

Study suggests inbreeding shaped course of early human evolution

Investments in Aging Biology Research will Pay Longevity Dividend




The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement