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| Remote Sensing Lab 3237 Peacekeeper Way Suite 209 McClellan, CA 95652 |
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Inventory Subplot
Subplot Footprint and Data Elements
Each single subplot consists of two fixed circular plots for the smallest (1/100 acre plot) and largest (1/4 acre plot) live trees, a fixed circular plot (1/8 acre plot) for down logs and snags, and a variable radius plot for intermediate sized trees. The fixed radius subplots are used for understory vegetation sampling, and for collecting woody debris and fuel bed depth information.
1/100 Acre Fixed Area Plot
- Radius = 11.8 feet
- Live and Dead Saplings (1.0 - 4.9 inches)
- Live Seedings
- Duff and Fuelbed Depth
1/8 Acre Fixed Area Plot
- Radius = 41.6 feet
- Medium Sized Dead Trees (5.0 - 19.9 inches)
- Large Woody Debris (Down logs)
- Root Collar Trees
1/4 Acre Fixed Area Plot
- Radius = 58.9 feet
- Very Large Live Trees (greater than limiting distance)
BAF 20: Trees greater than 30.3 inches
BAF 40: Trees greater than 42.8 inches - Large Dead Trees (20+ inches)
- Understory Vegetation
- Surface Cover Material
- Small Woody Debris
- Special Features
Variable Radius Plot
- For BAF 20 Prism: Trees 5.0 - 30.3 inches
- For BAF 20 Prism: Trees 5.0 - 42.8 inches
- Medium Sized Live Trees Tallied and Measured
USDA Forest Service - Pacific Southwest Region
Last Modified: Friday, 13 April 2012 at 13:24:04 EDT