USDA Forest Service
 
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Inventory Sampling Attributes

Vegetation is measured using a variety of fixed area and variable plots to collect data on trees (both live and dead) shrubs, herbaceous plants and grasses. Data is also collected on large woody debris, small woody debris, surface cover material, duff and fuelbed depth. Site information collected includes slope, elevation, and aspect, stand structure, stand history, and site index.

Full documentation of measured attributes and sampling protocols are available in the FIA User's Guide 5.1 MB

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