Fields Within the Gedi Cal/Val DataΒΆ
Last updated: 2020-06-30
The Global Ecosystem Dynamics Investigation (GEDI) Forest Structure and Biomass Database (FSBD) is a collection of field and LiDAR datasets developed to serve a central repository for calibration and validation of the GEDI mission data. The GEDI Cal/Val Field Data collection contains the field data contributions to the FSBD. The database has contributions across the globe for a variety of vegetation types from projects dating back to 2003.
The table below describes the variables found in the files:
variable | units | description |
---|---|---|
plot | NA | name of plot |
subplot | NA | subplot identifier |
survey | NA | name of survey event |
private | NA | data privacy (1=private, 0=public) |
date | NA | date of survey event |
region | NA | region of plot location: Eu=Europe; As=Asia; Au=Australia/New Zealand; Af=Africa; SEAsia=South East Asia; SA=South/Central America; US=United States) |
vegetation | NA | vegetation type where sampled: Sav = Savannah; TropRF = Tropical rainforest; TempRF = Temperate rainforest; TropSF = Tropical seasonal forest; TempF = Temperate forest; BorF = Boreal forest; Wo = Woodland; Gr = Grassland; Sh = Shrubland; De = Desert |
map | mm | mean annual rainfall |
mat | deg | mean annual temperature |
pft.modis | NA | plant functional type from the nearest MCD12Q1 product date |
pft.name | NA | plant functional type from field descriptions or other ancillary data |
wwf.ecoregion | NA | Terrestrial ecoregion from the WWF Olson et al. (2004) terrestrial ecoregions of the globe |
latitude | deg | latitude of location where sampled (-90 to 90 deg South to North) |
longitude | deg | longitude of location where sampled (-180 to 180 deg West to East) |
p.sample | NA | subplot type: 0=independent fixed area plots; 1=variable area plots; 2=multiple fixed area plots for aggregation; 3=variable radius sampling |
p.stemmap | NA | stem mapped plot (1=TRUE,0=FALSE) |
p.origin | NA | origin of the plot, SW has to be interpreted as the lower left corner relative to the orientation |
p.orientation | deg | orientation of plot degrees clockwise from UTM map grid north |
p.shape | NA | plot shape (E=ellipse, R=rectangle) |
p.majoraxis | m | major axis of plot |
p.minoraxis | m | minor axis of plot |
p.geom | m | plot geometry WKT string |
p.epsg | NA | epsg code of the UTM zone used for the tree coordinates |
p.area | m2 | plot polygon area |
p.mindiam | m | minimum tree diameter measured across all subplots |
sp.geom | m | subplot geometry WKT string |
sp.ix | NA | subplot track index |
sp.iy | NA | subplot pulse index |
sp.shape | NA | subplot shape (E=ellipse, R=rectangle) |
sp.area | m2 | subplot area |
sp.mindiam | m | minimum tree diameter measured for the subplot |
pai | m2/m2 | plant area index of vegetation |
lai | m2/m2 | leaf area index of vegetation |
cover | NA | vertically projected canopy cover (1-Pgap) |
dft | NA | dominant plant functional type: EA = evergreen angiosperm; DA = deciduous angiosperm; EG = evergreen gymnosperm; DG = deciduous gymnosperm |
agb | kg | mass of above-ground standing trees and shrubs |
agb.valid | NA | valid above ground mass prediction (1=TRUE,0=FALSE) |
agb.lower | kg | lower limit of standard error of mass of above-ground standing trees and shrubs |
agb.upper | kg | upper limit of standard error of mass of above-ground standing trees and shrubs |
agbd.ha | Mg/ha | mass density of above-ground standing trees and shrubs |
agbd.ha.lower | Mg/ha | lower limit of standard error of mass density of above-ground standing trees and shrubs |
agbd.ha.upper | Mg/ha | upper limit of standard error of mass density of above-ground standing trees and shrubs |
sn | n | plot stem number |
snd.ha | n/ha | plot stem number density |
sba | m2 | plot stand basal area |
sba.ha | m2/ha | plot stand basal area per hectare |
swsg.ba | g/cm3/m2 | basal-area-weighted wood specific gravity |
h.t.max | m | maximum total height of plants from ground to highest leaf |
sp.agb | kg | subplot mass of above-ground standing trees and shrubs |
sp.agb.valid | NA | valid subplot above ground mass prediction (1=TRUE,0=FALSE) |
sp.agbd.ha | Mg/ha | subplot mass density of above-ground standing trees and shrubs |
sp.agbd.ha.lower | Mg/ha | subplot lower limit of standard error of mass density of above-ground standing trees and shrubs |
sp.agbd.ha.upper | Mg/ha | subplot upper limit of standard error of mass density of above-ground standing trees and shrubs |
sp.sba.ha | m2/ha | subplot stand basal area per hectare |
sp.swsg.ba | g/cm3/m2 | subplot basal-area-weighted wood specific gravity |
sp.h.t.max | m | subplot maximum total height of plants from ground to highest leaf |
l.project | NA | name of the lidar project dataset on UMD servers |
l.instr | NA | lidar instrument manufacturer and model |
l.epsg | NA | epsg code of the corresponding lidar data |
l.date | NA | date of the corresponding lidar acquisition |
g.fp | NA | geometry collection WKT string of GEDI lidar footprint center locations |
tree.date | NA | date of tree measurement |
family | NA | latin name of botanical family |
species | NA | latin name of species (genus species) |
pft | NA | plant functional type: EA = evergreen angiosperm; DA = deciduous angiosperm; EG = evergreen gymnosperm; DG = deciduous gymnosperm |
wsg | g/cm3 | the ratio of wood density to water |
wsg.sd | g/cm3 | standard deviation of WSG sample values |
tree | NA | tree identifier |
stem | NA | stem identifier |
x | m | easting UTM coordinate |
y | m | northing UTM coordinate |
z | m | elevation relative to geoid coordinate |
status | NA | live tree (1=TRUE,0=FALSE) |
allom.key | NA | key to allometric LUT |
a.stem | m2 | area of total stem cross-section at measurement height |
h.t | m | total height of plant from ground to highest leaf |
h.t.mod | NA | tree heights modelled using local or regional DBH-Ht relationship |
d.stem | m | diameter of stem at measurement height |
d.stem.valid | NA | valid tree diameter to use in AGB calculation (1=TRUE,0=FALSE) |
d.ht | m | height at which stem diameter was measured |
c.w | m | diameter or width of crown |
m.agb | kg | mass of above-ground components of tree |