Fig. 2From: Modelling of root reinforcement and erosion control by ‘Veronese’ poplar on pastoral hill country in New ZealandNumber of fine roots per linear metre of soil trench width (along the circumference at a certain distance from tree stem) as a function of the distance from tree stem for the 1-year-old (a) and the 2-year-old (b) poplars. The dark red points are measured data and the green points represent the values obtained with the calibrated root distribution modelBack to article page