Fig. 6
From: Assessment of forest soil contamination in Krakow surroundings in relation to the type of stand
Projection of the variables on the factor-plane in soil of coniferous and broadleaf stands together; W, E, S, N, the directions of the world; B_S, broadleaf stands; C_S, coniferous stands; UR, urease activity; DH, dehydrogenase activity; dist, distance from Krakow; χ, mass magnetic susceptibility