Navigation Links
Study shows reforestation in Lower Mississippi Valley reduces sediment
Date:12/2/2013

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 streamsand ultimately the Gulf of Mexico. 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.

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 watershedsthe large Lower Yazoo River Watershed and the smaller Peters Creek Watershedto 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 levels25, 50, 75, and 100 percentof 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."


'/>"/>

Contact: Ying Ouyang
youyang@fs.fed.us
662-325-8654
USDA Forest Service ‑ Southern Research Station
Source:Eurekalert

Related biology news :

1. New UK study suggests low vitamin D causes damage to brain
2. Can big cats co-exist? Study challenges lion threat to cheetah cubs
3. Study finds new vulnerability in malaria parasite
4. Study finds the forgotten ape threatened by human activity and forest loss
5. Large study shows pollution impact on coral reefs -- and offers solution
6. CSI-type study identifies snakehead
7. Study examines potential evolutionary role of sexual regret in human survival and reproduction
8. Gene-silencing study finds new targets for Parkinsons disease
9. New genomic study provides a glimpse of how whales could adapt to ocean
10. Study finds gene network associated with alcohol dependence
11. A study on cell migration provides insights into the movement of cancer cells
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/15/2017)...   ivWatch LLC , a medical device company focused on ... receipt of its ISO 13485 Certification, the global standard for medical ... Standardization (ISO®). ... Continuous Monitoring device for the early detection of IV infiltrations. ... "This is an important milestone for ivWatch, as ...
(Date:5/23/2017)... GENOA, Italy , May 23, 2017  Hunova, the first robotic ... and trunk, has been officially launched in Genoa, Italy ... Europe and the USA . The ... launched on the market by the IIT spin-off Movendo Technology thanks to ... view the Multimedia News Release, please click: ...
(Date:4/19/2017)... 2017 The global military biometrics ... marked by the presence of several large global players. ... five major players - 3M Cogent, NEC Corporation, M2SYS ... nearly 61% of the global military biometric market in ... global military biometrics market boast global presence, which has ...
Breaking Biology News(10 mins):
(Date:10/12/2017)... ... October 12, 2017 , ... They call it the ... network, a depiction of a system of linkages and connections so complex and ... professor of computer science at Worcester Polytechnic Institute (WPI) and director of the ...
(Date:10/12/2017)... ... October 12, 2017 , ... BioMedGPS announces expanded ... of its newest module, US Hemostats & Sealants. , SmartTRAK’s US Market for ... fibrin sealants, synthetic sealants and biologic sealants used in surgical applications. BioMedGPS estimates ...
(Date:10/11/2017)... YORBA LINDA, CA (PRWEB) , ... October 11, ... ... adapted to upregulate any gene in its endogenous context, enabling overexpression experiments and ... activation (CRISPRa) system with small RNA guides is transformative for performing systematic gain-of-function ...
(Date:10/11/2017)... , Oct. 11, 2017  VMS BioMarketing, a leading ... a nationwide oncology Clinical Nurse Educator (CNE) network, which will ... need for communication among health care professionals to enhance the ... nurses, office staff, and other health care professionals to help ... breast cancer. ...
Breaking Biology Technology: