Forested Wetland Tree Canopy Cover 60-70% (raster) (DRAFT)

Nov 6, 2015
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Description:
We used the 2011 National Land Cover Database (NLCD) U.S. Forest Service Tree Canopy (analytical) product (USDA Forest Service Remote Sensing Applications Center 2014) combined with forested wetland mask derived above for assessment of overstory canopy cover within forested wetlands in the Mississippi Alluvial Valley (MAV) and other GCPO subgeographies. The USFS forest canopy layer contains values representing the unmasked proportion of each 30x30m pixel covered by tree canopy (0 to 100%) produced using random forest regression algorithms. To align with resolution of the forested wetland mask we sought to generate an average proportion of tree canopy across 30 m pixels within each 250 m forested wetland cell in the GCPO geography. To calculate average canopy cover we first aggregated 30 m canopy cover cells to 240 m using a mean function and a cell factor of 8 (the aggregate function in ArcGIS only allows for cell factor aggregation, not aggregation to a desired pixel size). We then resampled the 240 m cell aggregate to 250 m resolution using a nearest neighbor algorithm. This produced an approximation of the average tree canopy cover within each 250 m forested wetland pixel. We next reclassified the average tree canopy layer (0-60% = 0; 60-70% = 1; 70-100% = 0) to identify 250 m cells with 60-70% forest canopy cover. 

USDA Forest Service Remote Sensing Applications Center. 2014. NLCD 2011 USFS Percent Tree Canopy (Analytical Version).
Data Provided By:
USDA Forest Service Remote Sensing Applications Center NLCD 2011 USFS Percent Tree Canopy cover product in combination with analysis procedures completed by the Gulf Coastal Plains and Ozarks LCC.
Content date:
not specified
Citation:
USDA Forest Service Remote Sensing Applications Center.  2014.  NLCD 2011 USFS Percent Tree Canopy (Analytical Version).
 http://www.mrlc.gov/nlcd11_data.php
Contact Organization:
USDA Forest Service Remote Sensing Applications Center
Gulf Coastal Plains and Ozarks LCC
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Use Constraints:
No liability is to be assumed by the Gulf Coastal Plains and Ozarks Landscape Conservation Cooperative or any of its partners for the use or misuse of this data. Data is to be considered preliminary, pending comprehensive review, and assumed to be current and accurate at time of release.
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Tags:
forested wetland, gcpo, swamp, canopy, lcc, gulf coastal plains and ozarks, huc 12
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About the Uploader

CPA Administrator
Geomatics Coordinator with GCPO LCC

This is the account from which the content of the GCPO LCC portal is controlled. If you have questions, you may contact Kristine Evans at kristine@gri.msstate.edu