Four data sets from the Boreal Ecosystem–Atmosphere Study (BOREAS, Rich and Fournier 1999), as used by García (2006). These are approximately evenaged and single-species unmanaged natural forests, from a northern study area in Manitoba and a southern study area in Saskatchewan, central Canada. Tree coordinates and diameters at breast height (dbh) were measured for all trees taller than 2 m on areas of 50 m x 60 m, subdivided into subplots on a 10 m grid. Tree heights were estimated from height-dbh regressions based on a sample of height measurements. The data here excludes dead trees, and also excludes some trees with coordinates just outside the observation window.
The 4 data sets are:
Northern study area, Jack pine
Northern study area, black spruce
Southern study area, trembling aspen
Southern study area, Jack pine
Each data set is a spatstat marked point pattern object (class
ppp). The marks are a data frame with
dominance classification, and a subplot id.
Rich, P.M., and Fournier, R. (1999) BOREAS TE-23 map plot data [online]. Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee. Available from http://daac.ornl.gov.
García, O. (2006) Scale and spatial structure effects on tree size distributions: Implications for growth and yield modelling. Canadian Journal of Forest Research 36(11), 2983–2993. https://www.researchgate.net/publication/237866519.
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