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Summary of sample plots

Summary of sample plots.csv
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Variables
Location
  • Label:
  • Definition: Latitude and Longitude which represent the coordinates at geographic coordinate system.
  • Type: Nominal
  • Missing values: None specified
Number of plots
  • Label:
  • Definition: For each site, random plot locations were generated and then superimposed on leaf-on NearMap imagery. Plot locations were randomly placed using the Create Random Points tool in ArcGIS Pro. Maps of the field sites were exported as PDFs and uploaded to the Avenza Maps app and used along with a handheld compass and Trimble R1 unit to navigate to plot locations in the field. Each random point was marked as the southwest corner of the plot, and the square plot extended 10 meters True North and 10 meters East.
  • Type: Nominal
  • Missing values: None specified
Number of trees measured
  • Label:
  • Definition: Over the 69 plots, measurements of a total of 281 live trees with a minimum DBH of 10 c.m. from 23 species. Three out of 33 plots at Scio Woods and three out of 24 plots at Brauer Preserve contained no live trees greater than 10 c.m. in DBH and were excluded from biomass calculations due to concerns that plots containing 0 kg of tree biomass would lead to arbitrary underestimates of biomass.
  • Type: Nominal
  • Missing values: None specified
Mean DBH (cm)
  • Label:
  • Definition: DBH = diameter at breast height (c.m.) Standard DBH measuring protocols were followed according to standards described by West (2015). Over the 69 plots, measurements of a total of 281 live trees with a minimum DBH of 10 c.m. from 23 species.
  • Type: Nominal
  • Missing values: None specified
Std dev DBH (cm)
  • Label:
  • Definition: Standard deviation of DBH (cm)
  • Type: Nominal
  • Missing values: None specified
Basal area (m2/ha)
  • Label:
  • Definition: Basal area was calculated including the three plots at Scio Woods and three plots at Brauer which had no trees greater than 10cm DBH, resulting in lower values of basal area than if these plots were removed
  • Type: Nominal
  • Missing values: None specified
Mean plot biomass (kg)
  • Label:
  • Definition: Plot-level biomass measures are usually expressed on a per-unit-area basis, such as kg/m2, and calculated as the sum of biomass values for individual trees in a plot. It is widely assumed that the carbon content of a tree is 50% of its biomass. Once the biomass is known, carbon content can easily be calculated by multiplying by a factor of 0.5.
  • Type: Nominal
  • Missing values: None specified
Std dev plot biomass (kg)
  • Label:
  • Definition: Standard deviation of plot biomass (kg)
  • Type: Nominal
  • Missing values: None specified
Species
  • Label:
  • Definition: Common Name of live trees with a minimum DBH of 10 cm
  • Type: Nominal
  • Missing values: None specified

Resources

Additional Information

FieldValue
mimetypetext/csv
filesize926 bytes
resource typefile upload
timestampJun 29, 2021