Database for Rafieijahed et al. (2025) Canadian Journal of Remote Sensing

<p dir="ltr">The "Database_Rafieijaed_et_al_2025_Canadian_Journal_of_Remote_Sensing.csv" file contains the database used for the article "Predicting forest age up to 250 years in old-growth boreal mixedwoods of western Quebec, Canada, using airborne laser scanning data and modelled tree species composition" (doi:https://doi.org/10.1080/07038992.2025.2562266) published in the Canadian Journal of Remote Sensing. </p><p><br></p><p dir="ltr">This database provides airborne LiDAR and tree species modeling predictors for a spatially independent subsample of plots from the datapaper Maleki et al. 2021 "A 249‐yr chronosequence of forest plots from eight successive fires in the Eastern Canada boreal mixedwoods" in Ecology (data doi: http://onlinelibrary.wiley.com/doi/10.1002/ecy.3306/suppinfo), extracted at four different spatial resolutions: 400 m2, 1600 m2, 4900 m2, and 10000 m2.</p><p><br></p><p dir="ltr">The variables present in the dataset are as follows:</p><p><br></p><p dir="ltr">RESOLUTION : resolution of the predictors (400 m2, 1600 m2, 4900 m2 or 10000 m2)</p><p dir="ltr">PLOT_ID : unique plot ID</p><p dir="ltr">TRANSECT_ID: unique transect ID</p><p dir="ltr">FOREST_AGE: plot age, here defined as the time since the last fire (years)</p><p dir="ltr">FIRE_YEAR : year of the last fire</p><p dir="ltr">PERC01: 1st percentile of canopy height returns</p><p dir="ltr">PERC05: 5th percentile of canopy height returns</p><p dir="ltr">PERC10: 10th percentile of canopy height returns</p><p dir="ltr">PERC25: 25th percentile of canopy height returns</p><p dir="ltr">PERC75: 75th percentile of canopy height returns</p><p dir="ltr">PERC90: 90th percentile of canopy height returns</p><p dir="ltr">PERC95: 95th percentile of canopy height returns</p><p dir="ltr">PERC99: 99th percentile of canopy height returns</p><p dir="ltr">COEFFICIENT_VARIATION: Coefficient of variation of all height returns</p><p dir="ltr">STANDARD_DEVIATION: Standard deviation of all height returns</p><p dir="ltr">MEDIAN: Median of all height returns</p><p dir="ltr">SKEWNESS: Skewness of all height returns</p><p dir="ltr">PROP_7_12M: Proportion of height returns between 7 and 11.99 m</p><p dir="ltr">PROP_12_17M: Proportion of height returns between 12 and 16.99 m</p><p dir="ltr">PROP_17_22M: Proportion of height returns between 17 and 21.99 m</p><p dir="ltr">PROP_22_27M: Proportion of height returns between 22 and 26.99 m</p><p dir="ltr">CANOPY_RELIEF_RATIO: [(hmean − hmin)/(hmax − hmin)]</p><p dir="ltr">GAP_FRACTION: Percentage of returns below 7 m</p><p dir="ltr">RUGOSITY: Ratio of three-dimensional canopy surface model area to ground area</p><p dir="ltr">SYMMETRY_INDEX: [(hmodal - hmean)/(hperc95 - hmin)]</p><p dir="ltr">GAP_VTMR: Gap variance to mean ratio, based on the method of Zhang et al.(2017) "Characterizing Forest Succession Stages for Wildlife Habitat Assessment Using Multispectral Airborne Imagery" (doi:10.3390/f8070234)</p><p dir="ltr">MEAN_SLOPE : Mean value of slope</p><p dir="ltr">MEAN_TWI : Mean value of topographic wetness index (TWI)</p><p dir="ltr">SHARE_BETULA_PAPYRIFERA: Mean percentage in modelled merchantable wood volume of Betula papyrifera</p><p dir="ltr">SHARE_PICEA_GLAUCA: Mean percentage in modelled merchantable wood volume of Picea glauca</p><p dir="ltr">SHARE_PICEA_MARIANA: Mean percentage in modelled merchantable wood volume of Picea mariana</p><p dir="ltr">SHARE_POPULUS_SPP: Mean percentage in modelled merchantable wood volume of Populus spp.</p><p dir="ltr">SHARE_PINUS_BANKSIANA: Mean percentage in modelled merchantable wood volume of Pinus banksiana</p><p dir="ltr">SHARE_ABIES_BALSAMEA: Mean percentage in modelled merchantable wood volume of Abies balsamea</p><p dir="ltr">SHARE_THUJA_OCCIDENTALIS: Mean percentage in modelled merchantable wood volume of Thuja occidentalis</p><p dir="ltr">SHARE_EARLY_SUCCESSIONAL: Mean percentage in modelled merchantable wood volume of Betula papyrifera, Populus spp. and Pinus banksiana</p><p dir="ltr">SHARE_PICEA_SPP: Mean percentage in modelled merchantable wood volume of Picea glauca and Picea mariana</p><p dir="ltr">SHARE_LATE_SUCCESSIONAL: Mean percentage in modelled merchantable wood volume of Abies balsamea and Thuja occidentalis</p><p><br></p>