Foliar Litter Decomposition: A Conceptual Model with Focus on Pine (Pinus) Litter—A Genus with Global Distribution
Figure 9
Manganese concentration in decomposing needle litter of Norway spruce (a), Scots pine, lodgepole pine, and Aleppo pine (b). Data originates from a climatic gradient. A quadratic function of the type fitted both data sets reasonably well. Data from [58, 69, 76]. Please note the different scales on the axis.