Standing biomass of trees and ground vegetation

Data presented is standing biomass (above- and belowground) of trees (Scots Pine, Pinus sylvestris) and the ground vegetation. Tree biomass data is derived from stem diameter (at 1.3 m) and tree height using Marklund (1988) biomass functions. Aboveground biomass of ground vegetation is derived from biomass harvest of all aboveground parts of the vegetation in subplots. Belowground biomass was estimate based on published ratios (Nordin et a. 1998). Total biomass refers to the combined biomass of tree and ground vegetation. Besides data related to the species the file contain information on site id, latitude of the experimental sites, treatment, time (years) since last thinning operation and latitude (degrees) north of the southernmost site. Treatments were: Thinning (Th), No thinning (NoTh), Nitrogen fertilization (N), Thinning+ nitrogen fertilization (Th+N), and Thinning+N and P fertilization (Th+N+P).