1 / 36

Plot Level Variables

This manual outlines the standards for plot level data collection in Arkansas and Georgia, including specific codes and procedures for establishing new plots, remeasuring fixed plots, and tracking various environmental conditions. It details plot numbering systems, quality assurance codes, and access restrictions. Key instructions cover tree entries, human debris, water sources, road access, and GPS data collection requirements. This version (1.55) is aimed at improving consistency and accuracy in ecological assessments across both states.

hana
Télécharger la présentation

Plot Level Variables

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Plot Level Variables National Manual Version 1.55

  2. State No change Arkansas 05 Georgia 13

  3. County No change

  4. Plot Number • Plots numbers are now 4 digits: • 0001-0999 Standard field plots • 4001-4999 Intensification plots • 9000-9999 Temporary and supplemental plots

  5. P3 Hexagon Number No change, P3 plots only

  6. P3 Plot Number No change, P3 plots only

  7. Sample Kind 1 Initial plot establishment (new plots) 2 Fixed plot remeasurement 3 Replacement plot (lost plot) 9 Prism plot remeasurement/ Fixed plot establishment Arkansas: SK 1, 3, and 9 Georgia: SK 1, 2, and 3

  8. Manual Version Version 1.55, Updated May 25, 2001

  9. Current and Past Dates Format: Year, month, day Example: 20011001

  10. QA Status 1 Standard production plot 2 Cold check 3 Reference plot (off grid) 4 Training/practice plot (off grid) 5 Botched plot file 6 Blind check 7 Hot check of production plot • Usually use code 1 • If working with QA on a plot, code 7

  11. Crew Type 1 Standard field crew 2 QA crew (at least one QA person on plot

  12. Cruiser Number No change

  13. Number of Accessible Forest Land Conditions No change

  14. Number of Tree Entries • Only includes trees and saplings • Seedlings are tallied separately • Still record an entry for no tree and sapling tally

  15. Number of Prism Points Remeasured or Subplot Centers Reverted No change (SK 9 ONLY)

  16. Trails or Roads Code the nearest trail or road within 1 mile of plot center: 0 None within 1 mile 1 Paved road or highway 2 Improved gravel road 3 Improved dirt road 4 Unimproved dirt road 5 Human access trail

  17. Road Access Record the first road access restriction encountered while traveling to the SP: 0 None 1 Road blocked by locked gate or cable 2 Road blocked by human-made obstruction 3 Road blocked by natural occurrences 4 Posted no motorized vehicle signs 9 Other

  18. Public Use Restrictions Record restrictions posted for the plot area: 0 None 1 Keep out/ no trespassing 2 No hunting or fishing 3 No dumping 9 Other

  19. Recreation Use 1,2,3 Record up to three signs of the following recreation use on the four subplots: 0 No evidence of recreation use 1 Motor vehicle (4-wheel drive, ATV, motorcycle) 2 Horse riding, dog team trails, ski trails 3 Camping 4 Hiking 5 Hunting/ shooting 6 Fishing 7 Boating– launch site or dock 9 Other

  20. Human Debris No change

  21. Water on Plot Water sources on the four subplots that are not already identified on the plot: either too small to qualify as non-census water, or water in an accessible forest land condition: 0 None 1 Permanent streams/ponds 2 Permanent swamp, bog, marsh 3 Ditch/ canal 4 Temporary streams 5 Flood zones 9 Other temporary water

  22. Horizontal Distance to Improved Road • No definitional change • Codes are now one digit categories: 1 100 ft or less 2 101 to 300 ft 3 301 to 500 ft 4 501 to 1000 ft 5 1001 to 0.5 mile 6 >0.5 to 1 mile 7 >1 mile to 3 miles 8 >3 miles to 5 miles 9 Greater than 5 miles

  23. Horizontal Distance to Urban or Built-Up Land • No definitional change • Use the new one digit distance codes

  24. Horizontal Distance to Agricultural Land • No definitional change • Use the new one digit distance codes

  25. Size of Contiguous Forest Land No change

  26. GPS Coordinates • Average 180 readings • Try to keep error reading no more than +/- 70 feet • Elevation is recorded in feet, and above mean sea level • New option of reporting offset coordinates

  27. GPS Unit • New item • Codes: 0 GPS coordinates not collected 1 Rockwell PLGR 2 Other brand capable of field averaging 3 Trimble GeoExplorer or Pathfinder Pro 4 Recreational GPS (Garmin, Magellan, etc.)

  28. GPS Serial Number • New item • Record 6 digit serial number of the GPS unit

  29. Latitude No change

  30. Longitude No change

  31. GPS Elevation Change: Now recorded in feet and mean sea level

  32. GPS Error • New item • Make every effort to collect readings with <= 70 ft of error

  33. Number of Readings • New item • Make every effort to average 180 readings

  34. Azimuth and Distance to PC • New items • Do not code if coordinates are collected at PC • Do not code if coordinates are range calculated with a • PLGR unit within 200 feet of plot center • If position is obtained more than 200 feet from plot • center, record coordinates of where you are standing and • the azimuth and distance to plot center

  35. Plot Level Notes

  36. The End

More Related