Fig. 4From: Effect of thinning intensity on the stem CO2 efflux of Larix principis-rupprechtii MayrThinning intensity (TI) variations in the stem nutrient concentrations (nitrogen concentration (N), phosphorus concentration (P) and potassium concentration (K)) and nonstructural carbon (soluble sugar content (SS) and starch content (ST)) of 21- (a), 25- (b) and 41-year-old (c) Larix principis-rupprechtii forests. Error bars indicate the standard error, n = 9.Back to article page