Selecting FIA data

For initial exploration of the data, we will first get FIA plots from WA and OR. We are downloading data directly from DataMart for most up to date information. Please modify the above states as necessary. We are then subsetting to ecosections 242, 342, M242, and M333. Again, please modify as necessary.

To clean the data, we are only selecting FIA data that was measured in 1997 or later, when annualized data began. Finally, we are selecting plots that:

1. Have accessible forestland
2. Are not reserves
3. Are of private ownership
4. Are single condition class
5. Are of Douglas-fir or Hemlock/Sitka forest types

Breakdown of FIA plots

Map of FIA plots

Make a map of proportion of plots harvested in a Unit

It is by unitcd by I couldn’t figure out how to bold the unit areas unfortunately

Histograms of Previous BAA across forest types

For MBB, the mean BAAC for all plots is 102.2 sqft/acre and the mean for harvested plots is 173.8 sqft/acre.

For OH, the mean BAAC for all plots is 145.5 sqft/acre and the mean for harvest plots is 200.2 sqft/acre.

Histograms of Previous QMD across forest types

For MBB, the mean QMD for all plots is 9.6in and the mean for harvested plots is 13.9in.

For OH, the mean QMD for all plots is 10.7in and the mean for harvest plots is 13.3in.

RD removed and Change in BAA by forest type

The mean RD % removed for DF is 79.3% and for HS is 90.3%.

Change in QMD after harvest

Harvest behaviors by change in QMD

Percent TPA removed