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Web Application to Access and Visualize US Forest Inventory and Analysis Program Down Woody Materials Data

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Accurate assessments of down woody materials (DWM)—soil duff and litter, dead and downed fine and coarse woody detritus, and live and dead understory vegetation—are important because of their roles in forest floor carbon storage, organism habitat, nutrient cycling, and fuel loading. The USDA Forest Service's Forest Inventory and Analysis Program (FIA) subsamples DWM in its extensive annual survey of US forestland and reports raw data measurements in its database. We combined FIA plot measurements and auxiliary specific gravity and other data to estimate the DWM component mass on FIA plots. The resulting database, designed for use with key stand structure variables and geographic subsets (state and/or ecoregion), can be downloaded at A companion interactive map allows viewing of the DWM data set via a color-coded display of user-selected DWM component mass, thus allowing users to quickly access and choose DWM data for downloading. Research scientists, managers, and policymakers can use a valuable national-scale DWM baseline data set via this online tool.
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Keywords: Forest Inventory and Analysis Program (FIA); coarse and fine woody detritus; duff; forest floor; litter

Document Type: Research Article

Publication date: 2013-03-01

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  • The Journal of Forestry is the most widely circulated scholarly forestry journal in the world. In print since 1902, the Journal has received several national awards for excellence. The mission of the Journal of Forestry is to advance the profession of forestry by keeping forest management professionals informed about significant developments and ideas in the many facets of forestry: economics, education and communication, entomology and pathology, fire, forest ecology, geospatial technologies, history, international forestry, measurements, policy, recreation, silviculture, social sciences, soils and hydrology, urban and community forestry, utilization and engineering, and wildlife management. The Journal is published bimonthly: January, March, May, July, September, and November.

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    June 1, 2016 to Feb. 28, 2017

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