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Vegetation morphologic and aerodynamic characteristics reduce aeolian erosion.

ABSTRACT:

Absract

Vegetation cover is crucial to controlling aeolian erosion but highly efficient vegetation is critical. How this efficiency is influenced by vegetation response to airflow is not clear. Here we evaluate the responses of Cosmos bipinnatus and Ligustrum lucidum Ait to a range of wind speeds in a wind tunnel. For both species, we calculate shelter effect and sand flux. We show that plant effectiveness in reducing wind speed and sediment transport is linked to their aerodynamic response to airflow which results from their morphology. We demonstrate that in low-density cover the flow-response and resistance of individuals is most critical in the optimal effectiveness of a canopy. Our wind tunnel experiment suggests that vegetation morphology and structure must be priority parameters in facilitating aeolian erosion control.

SUBMITTER: Miri A

PROVIDER: S-EPMC5634502 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature

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Vegetation morphologic and aerodynamic characteristics reduce aeolian erosion.

Miri Abbas A Dragovich Deirdre D Dong Zhibao Z

Scientific reports 20171009 1

<h4>Absract</h4>Vegetation cover is crucial to controlling aeolian erosion but highly efficient vegetation is critical. How this efficiency is influenced by vegetation response to airflow is not clear. Here we evaluate the responses of Cosmos bipinnatus and Ligustrum lucidum Ait to a range of wind speeds in a wind tunnel. For both species, we calculate shelter effect and sand flux. We show that plant effectiveness in reducing wind speed and sediment transport is linked to their aerodynamic respo ...[more]

PMID: 28993700

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