International Journal of Forestry Research / 2014 / Article / Fig 10

Research Article

Effects of Drought Frequency on Growth Performance and Transpiration of Young Black Locust (Robinia pseudoacacia L.)

Figure 10

(a) Mean and standard deviation of the above ground dry total biomass and dry wood biomass produced during the vegetation period; (b) mean and standard deviation of the water use efficiency under different drought stress duration. *Nonparametric analysis Mann-Whitney test. *Different letters indicate significant difference ( ).