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A review of vegetated buffer efficacy
Date:2/16/2010

asses and trees. However, soil drainage type did not show a significant effect on pollutant removal. Based on the scientists' analysis, a 30-m buffer under favorable slope conditions (about 10%) removes more than 85% of all the studied pollutants.

The study reveals the quantitative relationships between mitigation efficacies of vegetated buffers and their width, vegetation type, and slope. The results from this review and data analysis were confirmed by a group of researchers from the USDA in Oklahoma and University of Kenya in Naribo through field experiments.

As Minghua Zhang, one of the authors of the study, notes, "This information could serve as baseline data for setting guidelines for buffer implementation and installation. In addition, estimated parameters could facilitate further investigations on buffer efficacy beyond field scale. The results of this study will assist in future modeling efforts to study the mitigation efficacy of vegetated buffers for reducing pollutants in agricultural runoff at watershed scale."


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Contact: Sara Uttech
suttech@sciencesocieties.org
608-268-4948
American Society of Agronomy
Source:Eurekalert

Page: 1 2

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