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. 2013 Jun 28;8(6):e67353. doi: 10.1371/journal.pone.0067353

Figure 2. Soil basal respiration and metabolic quotient of five natural secondary forest types.

Figure 2

Soil (A) basal respiration and (B) metabolic quotient of each forest type. CP–Chinese pine, SO–Sharptooth oak, AP–Armand pine and WS–Wilson spruce. Values are means±SD and letters denote significant differences among forest types (P = 0.05).