Capitolo 71
with equitable accuracy. Value of future stumpage, tax burden and fire
risk is everything subject to the uncertain influences but the approximate one
produces of a kind determined under the natural given conditions it will be
the same in the future what time it is. To foretell only asks for him/it
study of existing stands without being misguided by the influence
of conditions that won't be repeated.
On the other hand an immense amount of misinformation circulates
because of superficial observation. Enthusiasts that discovers individual
you plant with trees that the prodigious growth you/they have done, or even enough wide
stands on fertile ground with heavy rain, will calculate sawlog
to 40 or 50 years produced that I am very too optimistic for general
question. Others, remembering of their stand you/they have seen in
unfavorable place, or noticing trees shade-suppressed that
you/he/she won't be made parallel after the forest of virgin is removed, it is
improperly it discouraged. It is a lot of main point that produces tables is done
from observatories trained that they know whether to reach the true average, and
what the figures or indeed they come from the region to that them
you/he/she will be applied or you/he/she will be accompanied by a systematic analysis of
climatic conditions and others that the licenses intelligent comparison.
In to calculate another product on cut-ended earth, the system for a
new and equal-elderly growth, as it will follow cutting clean of Douglas
fir, is for example rather different from that necessary if the
penetrating amounts only to selection of the marketable trees and
he/she leaves a stand equitable smaller one. In the case according to, produced
based tables on production of surface in acrid media are of small use because
so a lot it depends on the character of the stand on which he/she remains
the line in question. Here the base has to be the percentage of the growth
of the individual and middle tree. A respect from the number in each
class of present diameter can be made some trees that will escape