Fig. 4
From: The relationships among structure variables of larch forests in China
Relationships between average DBH and stem density for larch forest types with more than 10 plots in China according to the quantile regression (QR) with quantiles of 50%, 75% and 95% and the ordinary least square regression (OLS). a L. gmelinii forest; b L. gmelinii var. principis-rupprechtii forest; c L. sibirica forest; d L. potaninii var. australis forest; e L. potaninii var. chinensis forest; f Sect. Larix forests; g Sect. Multiseriales forests; and h overall. For abbreviations of each larch forest type, see Figs. 2 and 3