Fig. 5From: Climate has a larger effect than stand basal area on wood density in Pinus ponderosa var. scopulorum in the southwestern USALong-term trends in basal area increment (BAI, top), ring density (RD, middle), and LW proportion (LWP, bottom) for breast height samples. Lines were produced by fitting cubic smoothing splines to the data with degrees of freedom restricted to 5. Figure produced in R with some limited post-processing in InkscapeBack to article page