Abstract
The aim of this study was to evaluate the effect of ephemeral gully erosion on vine vigour. The vine vigour was estimated through the Normalized Difference Vegetation Index (NDVI) derived from a detailed multispectral aerial image acquired August 11, 2010. An analysis of variance and a Duncan’s multiple range test was performed to compare NDVI values in areas around the axis of gully incision and in control areas not affected by gullies. The soil eroded volume was measured from a 0.1 m resolution digital elevation model acquired by an unmanned aerial vehicle (UAV) on May 07, 2012. The results demonstrate the utility of multispectral images to determine the area affected by gully erosion in vineyards, as well as of the digital elevation models derived from UAVs for precision conservation projects.
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