The total standing woody biomass of sweet chesnut coppice is studied u
sing IFN data (French National Forest Survey). To obtain pure coppiced
standing, 374 sample plots are selected on 9 forest regions, represen
ting 35% of measured sweet chesnut plots. The equation giving total ab
ove-ground biomass of individual trees in relation to their girth at b
reast height is applied to the plots. Using the radial increment of 5
yr, the biomass present 5 yr ago is computed with the same equation. W
e consider data structure, and a general logistic model is applied to
estimate height and biomass growth. The equations obtained are: domina
nt height (m) = 13.8 x [1-exp(-0.130 x age)] biomass (t.ha-1) = 67 x [
1-exp(-0.19 x age)]6.09. The mean biomass growth model gives a maximum
current annual increment of 4.3 t.ha-1.yr-1 at 9 yr, and a maximum me
an annual increment of 3 t.ha-1.yr-1 at 12 yr. The results below are t
hose presented in a previous paper We show that forest regions have di
fferent growth potentials, but the proposed models can explain these d
ifferences. Future research work using the same data are proposed.