Title

Data for tree mortality calibration of satellite and LiDAR-derived fire severity estimates

Description

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).

OCLC

1090815404

Document Type

Dataset

DCMI Type

Dataset

File Format

.jpg, .csv

Publication Date

2-28-2019

Funder

Joint Fire Science Program

Publisher

Utah State University

Award Number

Joint Fire Science Program 16-1-04-2

Methodology

This data set was created in partial fulfillment of JFSP grant 16-1-04-2 to supplement data from the Yosemite Forest Dynamics Plot (YFDP; Lutz et al. 2012, 2017; Furniss et al. 2018). This is the data set associated with Furniss et al. (in review), Jeronimo et al. (in review). 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 Ð 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 ³10 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).

Scientfic Names

Abies concolor, Abies magnifica, Calocedrus decurrens, Cornus nuttallii, Pinus contorta, Pinus jeffreyi;, Pinus lambertiana, Pinus ponderosa, Pseudotsuga menziesii, Quercus chrysolepis, Quercus kelloggii, Sequoiadendron giganteum

Language

eng

Code Lists

File JFSP_2017_Plot_Photos.zip

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.

Color Representation: sRGB.

Image Dimensions: 4000 x 3000 pixels (Panasonic), 4032 x 3024 pixels (Apple).

File JFSP_Plot_Final_Positions.csv

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.

DATE: The date.

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.

UTM_ZONE: The UTM zone.

DATUM: The datum.

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.

File JFSP_Trees_Final.csv

This file includes measurements of all trees with diameter at breast height ≥10cm.

PLOT: A four-character code identifying each plot, consisting of the group code (G0-G7) and the plot code (P1-P8) within each group.

DATE: The date.

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.

Disciplines

Forest Sciences

License

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.

Files

JFSP_README_20190219.txt (6 kB)
MD5: 696634715f51d213dbe7471b2e1ab9b1

JFSP_Plot_Photos.zip (2054343 kB)
MD5: 06d7b9434b42e12a62b0152fb784af7c

JFSP_Plot_Final_Positions.csv (7 kB)
MD5: 1027b6c110b8a19d77a472684c84cc59

JFSP_Trees_Final.csv (702 kB)
MD5: 1eedd684d839925b3fdf36fda1061eaf

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