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Fig. 3 | Forest Ecosystems

Fig. 3

From: Different responses of soil respiration and its components to nitrogen and phosphorus addition in a subtropical secondary forest

Fig. 3

Effects of nitrogen and phosphorus additions on soil enzyme activity in 2014 and 2015. Vertical bars represent the standard error of the mean (n = 4). CK, control; N, nitrogen addition; P, phosphorus addition; NP, both nitrogen and phosphorus addition. Two-way ANOVA shows the effects of N and P addition on soil enzymes activity

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