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Fig. 4 | New Zealand Journal of Forestry Science

Fig. 4

From: Modelling of root reinforcement and erosion control by ‘Veronese’ poplar on pastoral hill country in New Zealand

Fig. 4

Root distribution data fitted using the PN dataset (Douglas et al. 2010), considering four tree densities: 89, 160, 210, and 237 sph (corresponding to mean stem distances (D) of 10, 8, 7, and 6.5 m, respectively). Points correspond to the data of the mapped trenches (P), the continuous line shows the results of the calibrated model, and the dashed lines the 95 % confidence interval. T indicates the position of the trees in the transect

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