"Data for tree mortality calibration of satellite and LiDAR-derived fir" by N. Macriss, T. J. Furniss et al.
The 55 JFSP plots were established to capture forest types, fire histories, and severity levels beyond those found within the YFPD. The plots were square 50 m × 50 m plots established in Pinus ponderosa, Pinus jeffreyi, and Abies concolor – Pinus lambertiana forest types between 1,431 m and 2,250 m elevation. Plots were installed post-fire based on a randomly chosen locations stratified by burn severity levels as calculated from the differenced Normalized Burn Ratio (dNBR). For details on site selection see Furniss et al. (in review). In the field, plots were located using a handheld GPS and then a more precise position was collected using a survey-grade GNSS receiver. Within each plot, all trees ≥10 cm DBH were identified, measured, and mapped. Tree measurements included DBH (1.37 m), species, vigor, and lean (distance and direction). Trees were mapped according to the methods in Lutz et al. (2012).
Furniss, T. J., V. R. Kane, A. J. Larson, and J. A. Lutz. In review. Calibration of satellite-derived severity indices using actual tree mortality. Remote Sensing of Environment.
Jeronimo, S.M.A., J.A. Lutz, V.R. Kane, A.J. Larson, and J.F. Franklin. In review. Burn weather and three-dimensional fuel structure determine post-fire tree mortality. Ecography.
This file contains photos of the 55 plots and their site descriptions.
File Type: All photos are .JPG files.
Camera: Panasonic DMC-FS15, Apple iPhone 6s, Apple iPhone SE.
Image Dimensions: 4000 x 3000 pixels (Panasonic), 4032 x 3024 pixels (Apple).
This file contains the GPS plot locations as measured in the field.
PLOT: A four-character code identifying each plot, consisting of the group code (G0-G7) and the plot code (P1-P8) within each group.
UNIT: The GNSS receiver used to take the measurement.
START_TIME: The time at which the GPS fix was initiated.
END_TIME: The time at which the GPS fix was terminated.
DURATION: The total time utilized to acquire a GPS fix.
UTM_X: The measured UTM X coordinate.
UTM_Y: The measured UTM Y coordinate.
UTM_Z: The measured UTM Z coordinate.
UTM_X_95_ELLIPSE: The 95% error ellipse of the X coordinate.
UTM_Y_95_ELLIPSE: The 95% error ellipse of the Y coordinate.
UTM_Z_95_ELLIPSE: The 95% error ellipse of the Z coordinate.
GPS_CORNER: A two letter code identifying which corner of the plot the UTM coordinates are associated with (NE=Northeast, NW=Northwest, SE=Southeast, SW=Southwest).
GPS_OFFSET_DIST: The horizontal distance, in meters, that the GNSS receiver was offset from the specified corner.
GPS_OFFSET_AZM: The compass bearing at which the GNSS receiver was offset from the specified corner.
MIDDLE_TRANSECT_X: The x coordinate of the middle transect.
EAST_TRANSECT_X: The x coordinate of the east transect.
This file includes measurements of all trees with diameter at breast height ≥10cm.
TREE_ID: A three-character code identifying the trees within each plot. Recorded as the first letter of the field staff member's name (D, E, J, G, T) followed by a number corresponding to the sequence in which they sampled the trees.
UNIQUE: A concatenation of Plot ID and Tree ID giving each tree a unique identifier.
SPECIES: The four letter code used to abbreviate species (ABCO: Abies concolor; ABMA: Abies magnifica; CADE: Calocedrus decurrens; CONU: Cornus nuttallii; PICO: Pinus contorta; PIJE: Pinus jeffreyi; PILA: Pinus lambertiana; PIPO: Pinus ponderosa; PSME: Pseudotsuga menziesii; QUCH: Quercus chrysolepis; QUKE: Quercus kelloggii; SEGI: Sequoiadendron giganteum; UNKN: Unknown).
DBH: Diameter at breast height (1.37m) in centimeters.
STATUS: A number from 1-9 identifying the status of the tree (1=vigorous; 2=declining; 3=nearly dead; 4=dead, delayed, non-fire; 5=dead, delayed, fire; 6=dead, immediate, fire; 7=dead pre-fire; 8=dead on ground, pre-fire; 9=consumed by previous fire).
LEAN_AZM: The compass bearing of a tree's lean from tip to base.
LEAN_HD: The horizontal distance, in meters, from the tip of a leaning tree to its base.
DOG: A true/false statement indicating if the tree is Dead On Ground.
DBH_EST: A true/false statement indicating if the DBH was estimated.
BROKEN_TOP: A true/false statement indicating if the tree has a broken top.
TD: The distance, in meters, along the 50m transect that corresponds to the tree's perpendicular position to the transect.
HD: The horizontal distance, in meters, from the transect to the nearest face of the tree.
TRANSECT: A two letter code indicating the transect and direction from the transect to which the tree was measured (WE=west transect facing east, MW=middle transect facing west, ME=middle transect facing east, EW=east transect facing west). For plots in which trees were mapped using a total station, this field identifies which total station was used.
AZM: The angle of the tree, with respect to true north, measured by the total station.
DIST: The distance, in meters, from the total station to the nearest face of the tree.
FIELD_1, FIELD_2, FIELD_3, FIELD_4, FIELD_5: The field personnel present.
Macriss, N.; Furniss, T. J.; Jeronimo, S.M.A.; Crowley, E. L.; Germain, O. W.; Germain, S.; Kane, V. R.; Larson, A. L.; and Lutz, J. A., "Data for tree mortality calibration of satellite and LiDAR-derived fire severity estimates" (2019). Browse all Datasets. Paper 63.