Skip to main content
U.S. flag

An official website of the United States government

SPRUCE Tree Growth Assessments of Picea and Larix in S1-Bog Plots and SPRUCE Experimental Plots, Beginning in 2011, Version 2

Description

This data set reports tree growth measurements of mature Picea mariana and Larix laricina located in the S1-Bog permanent plots and the SPRUCE experimental study plots. Data have been collected annually from 2011 to 2024 (2011-02-23 to 2024-02-26) in late February/ early March to capture the productivity of the previous growing season (i.e. the February 2024 measurements track the 2023 growing season).  Data collections are anticipated to continue through February of 2026 and this data set will be appended annually.

Initial observations in 2011 included measurements of circumference at 1.3 m (diameter at breast height assessments; DBH) above the nominal bog hollow surface, tree heights and crown diameters. Subsequent annual measurements have focused on the measures of circumference at DBH. Supplemental tree height data collected via terrestrial lidar (Graham et al. 2019) were initiated in 2016 and have been maintained annually. Circumference measurements to the nearest 0.1 cm are converted to DBH in cm and basal area at DBH in (cm2). Tree height and crown diameter are measured to the nearest 0.1 m. This dataset contains one data file in comma separate (*.csv) format. 

User Note: In this Version 2, some previously released ‘Circum_Status’ values were updated to fix misread field measurements in previous years. The new data file, SPRUCE_Tree_Growth_Archive_20240620.csv, supersedes and replaces the previous, SPRUCE_Tree_Growth_Archive_20230327.csv. 

Citation

Hanson, Paul J, Jana R Phillips, Stan D Wullschleger, W Robert Nettles, Jeffrey M Warren, Eric J Ward, Jake D Graham, and Thomas A Ruggles. 2018. SPRUCE Tree Growth Assessments of Picea and Larix in S1-Bog Plots and SPRUCE Experimental Plots beginning in 2011. Oak Ridge National Laboratory, TES SFA, U.S. Department of Energy, Oak Ridge, Tennessee, U.S.A. https://doi.org/10.25581/spruce.051/1433836 

Download

 

Posted

Wednesday, April 25, 2018

SPRUCE ID: spruce.051

Public

Image
Tree measurements were initiated in February of 2011 and have continued on an annual basis.

Click image to see full-sized version

mnspruce.ornl.gov

An official website of the U.S. Department of Energy and the USDA Forest Service

Looking for U.S. government information and services?
Visit USA.gov