Fig. 5

PCA/biplot of the charcoal kiln sites data. Matrix: 3934 charcoal kiln sites. Reinhardswald (Rw): 2626 kiln sites, Kellerwald-Edersee National Park (Kw): 1308 kiln sites. Axis 1: eigenvalue = 1.67, axis 2: eigenvalue = 1.51, combined R² of axes 1 and 2 = 0.19