Fig.3

Percentages of mass remaining and annual decomposition rate (k value) from decomposing fine roots in a C. lanceolata plantation under acid rain stress. A Sulfuric acid rain; B sulfuric and nitric acid rain mixture; C nitric acid rain; D k value, calculated using the first-order exponential decay model (X_t/X_o = e^−kt). Other details as in Fig. 1