Abstract
To investigate potential methods of planting broadleaf trees on man-made slopes, we carried out a survey on the tree growth and slope conditions of a test planting site with Quercus glauca, and a mixed planting composed of Q. glauca and a soil improving tree (Alnus Sieboldiana).
By applying the Gompertz equation to the growth curves, we obtained the following results:(1) Large sizes of nursery trees could had better results, (2) dense planting had an advantage to increasing the biomass, but it needs to be thinned out now.(3) Q. glauca in the mixed planting plots grew slower than that in the pure planting plots, but the maximum value of the growth of Q. glauca in the mixed plots was estimated to be larger. This result shows the significant usefulness of mixed planting with soil improving trees.
