Table 1. Equations of DBH growth given with parameterisation sample size and parameter values. | |||||||||||||
algorithm | equation | number | specification | sample size | a0 | a1 | a2 | a3 | a4 | ||||
growth quantile | [cm yr–1] | 1 | q = 95 | 2,080 | 1.02 | 0.324 | 0.028 | ||||||
q = 50 | 2,080 | 0.693 | 0.328 | 0.04 | |||||||||
q = 5 | 2,080 | 0.382 | 0.301 | 0.049 | |||||||||
predicted DBH growth | [cm yr–1] | 2 | any | 5,713 | –0.348 | –0.0004 | –0.038 | 0.181 | 0.032 | ||||
reconstructed DBH growth at given DBH (d) | [cm yr–1] | 3 | |||||||||||
growth corridor (lower) | 4 | ||||||||||||
growth corridor (higher) | 5 | ||||||||||||
weight | 6 | ||||||||||||
d = diameter at breast height (DBH, 1.3 m) [cm] | S = local stand density index within 2.5 × crown radius | ||||||||||||
= mean distance of nearest neighbours [m] | = quadratic mean stem diameter of nearest neighbours [cm] | ||||||||||||
Nearest neighbour range is within a radius of 10 m around the central tree. | = growth quantile | ||||||||||||
α = weight |