Raster Dataset
Tags
HJ Andrews Experimental
Forest, Landscape Ecology, Oregon, geology, Blue River Watershed, Lidar, Willamette Basin,
Forest Metrics, Percentile Height, Focal Window, Standard Deviation
Standard deviation of a 7x7 neighgorhood creates a metric of local variability in height. Percentile height is a forest metric derived from Lidar point clouds. This metric measures the height at which a given percent of the first return points are below. This analysis is done in a given grid cell size. Height metrics give various statistics of the elevation above ground for a given set of Lidar points. In forested landscapes, first return height metrics describe the forest canopy.
The standard deviation of height was created with a focal statistics command. A 7x7 pixel focal window was used to assess standard deviation. The focal window was run on 95th percentile height. Percentile height is derived from the raw Lidar point clouds using the FUSION software. The horizontal resolution is 5 meters. Only first Lidar returns were used so that height metrics describe the top of the canopy. This metric measures the height at which 95% of the first return points are below.
Watershed Sciences, Inc. (WS) collected Light Detection and Ranging (LiDAR) data from HJ Andrews and the Willamette National Forest (NF) on August 10th and 11th 2008. Total area for this AOI is 17,705 acres. The total area of delivered LiDAR including 100 m buffer is 19,493 acres.
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Extent
West | -122.277460 | East | -122.096288 |
North | 44.295006 | South | 44.196772 |
Maximum (zoomed in) | 1:5,000 |
Minimum (zoomed out) | 1:50,000 |
The LiDAR was flown on August 10th and 11, 2008 and processed data was delivered on November 14th, 2008.
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no legal constraints on use of this data. We ask that the following Acknowledgements be made: http://andrewsforest.oregonstate.edu/lter/acknowledgements.cfm
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raster data set
esri
Standard deviation of height in meters
FUSION software documentation