column names,definition,derivation,notes
PLT_CN,FIA PLOT ID NUMBER,from FIA plot and tree tables,
TPH.gs.dC.dN0.01,The net dC/dN (the net change in aboveground live tree carbon with change in N deposition) based on both growth and survival equations multiplied by the TPH (trees per hectare),,
TPH.s.dC.dN0.01,The net dC/dN (the net change in aboveground live tree carbon with change in N deposition) based on only survival equations multiplied by the TPH (trees per hectare),,
TPH.g.dC.dN0.01,The net dC/dN (the net change in aboveground live tree carbon with change in N deposition) based on only growth equations multiplied by the TPH (trees per hectare),,
EXPN.ha,The FIA expansion factor in hectares for the FIA plot,,
LAT,FIA published latitude of the plot,,
LON,FIA published longitude of the plot,,
EXPN.ha.TPH.gs.dC.dN0.01,The net dC/dN of the FIA plot fully expanded for the number of trees it represents for both growth and survival,,
EXPN.ha.TPH.s.dC.dN0.01,The net dC/dN of the FIA plot fully expanded for the number of trees it represents for survival only,,
EXPN.ha.TPH.g.dC.dN0.01,The net dC/dN of the FIA plot fully expanded for the number of trees it represents for growth only,,
US_L4CODE,United States Level 4 Ecoregion code from FIA table,,
NA_L3CODE,North America Level 3 Ecoregion code from FIA table,,
NA_L1CODE,North America Level 1 Ecoregion code from FIA table,,
STATECD,FIA state code,,
COUNTYCD,FIA county code,,
e3,North America Level 3 Ecoregion code from FIA table,,
e1,North America Level 1 Ecoregion code from FIA table,,
e4,United States Level 4 Ecoregion code from FIA table,,
e3.state,North America Level 1 Ecoregion code from FIA table,,
e4.state,United States Level 4 Ecoregion code from FIA table,,
e1.state,North America Level 1 Ecoregion code from FIA table,,
eco.EXPN.ha,Estimated total area of the ecoregion represented by that plot in hectares,,plot may represent land outside of ecoregion
state.EXPN.ha,Estimated total area of the state represented by that plot in hectares,,"Based on FIA design, plot should only represent land within the state"