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TV081

Forest metrics derived from the 2008 Lidar point clouds, includes canopy closure, percentile height, and stem mapping for the Andrews Experimental Forest.

  • Creator(s): Thomas A. Spies
  • PI(s): Thomas A. Spies
  • Originator(s): Thomas A. Spies
  • Other researcher(s):
  • Dates of data collection: Aug 10 2008 - Aug 11 2008
  • Data collection status: Study collection is completed and no new collection is planned
  • Data access: Online
  • DOI: https://doi.org/10.6073/pasta/875e10383e8c8aee3c9a49e0155eef1d
  • Last update: Sep 12 2014 (Version 4)
<Citation>     <Acknowledgement>     <Disclaimer>    
Spies, T. 2014. Forest metrics derived from the 2008 Lidar point clouds, includes canopy closure, percentile height, and stem mapping for the Andrews Experimental Forest.. Long-Term Ecological Research. Forest Science Data Bank, Corvallis, OR. [Database]. Available: http://andlter.forestry.oregonstate.edu/data/abstract.aspx?dbcode=TV081. https://doi.org/10.6073/pasta/875e10383e8c8aee3c9a49e0155eef1d. Accessed 2024-04-20.
Data were provided by the HJ Andrews Experimental Forest research program, funded by the National Science Foundation's Long-Term Ecological Research Program (DEB 2025755), US Forest Service Pacific Northwest Research Station, and Oregon State University.
While substantial efforts are made to ensure the accuracy of data and documentation, complete accuracy of data sets cannot be guaranteed. All data are made available "as is". The Andrews LTER shall not be liable for damages resulting from any use or misinterpretation of data sets.
ABSTRACT:
There are three types of forest metrics within this database. They all are derived from the raw Lidar point clouds using the FUSION software. The three types are canopy closure, height metric, and stem mapping. The canopy closure and height metric grids cover a variety of canopy heights and grid cell sizes. 1. Canopy closure: This metric measures the canopy closure of a given horizontal cell above a given vertical threshold (height break). Canopy closure can inform many landscape models and provide insight on how much light will reach the forest floor. 2. Height Metric: 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. 3.This stem map locates the approximate center of all trees in the HJ Andrews Research Forest greater than 10 meters. In addition to the stem location, a canopy radius is also provided. FUSION and TreeVaWA software programs were used to develop this data. 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.

Study Description Download Study Location Information: (CSV)
Ecological Metadata Language: (EML)
ENTITY TITLES:
1Canopy point density of all returns greater than 0 and less than 2 meters (5 meter cells) MAP / METADATADATA
2Canopy closure of all returns above 10 meters (5 meter cells) MAP / METADATADATA
3Canopy closure of all returns above 16 meters (30 meter cells) MAP / METADATADATA
4Canopy point density of all returns greater than 2 and less than 10 meters (5 meter cells) MAP / METADATADATA
5Canopy closure of all returns above 2 meters (30 meter cells) MAP / METADATADATA
6Canopy closure of all returns above 2 meters (5 meter cells) MAP / METADATADATA
7Canopy closure of all returns above 40 meters (5 meter cells) MAP / METADATADATA
8Height Metric - 80th Percentile Height of all 1st Returns greater than 1 meter from ground (5 meter cells) MAP / METADATADATA
9Height Metric - 95th Percentile Height of all 1st Returns greater than 1 meter from ground (5 meter cells) MAP / METADATADATA
10Height Metric - Mean Height of all 1st Returns greater than 1 meter from ground (5 meter cells) MAP / METADATADATA
11Height Metric - Mean Height of all 1st Returns (5 meter cells) MAP / METADATADATA
12Height Metric - 75th Percentile Height of all 1st Returns (5 meter cells) MAP / METADATADATA
13Height Metric - 95th Percentile Height of all 1st Returns (5 meter cells) MAP / METADATADATA
14Height Metric - Standard Deviation of Height of all 1st Returns greater than 1 meter from ground (5 meter cells) MAP / METADATADATA
15Height Metric - Standard Deviation of Height of all 1st Returns (5 meter cells) MAP / METADATADATA
16Standard Deviation of 7x7 Neighborhood of Height Metric (5 meter cells) MAP / METADATADATA
17Stem Map for Trees greater than 10 meters high in the HJ Andrews Research Forest MAP / METADATADATA

RELATED DATABASES:
 LiDAR data (August 2008) for the Andrews Experimental Forest and Willamette National Forest study areas (GI010)
 Aboveground Live Biomass (2008), Andrews Experimental Forest (TV080)