Tree thinning for restoration

Michael Hagen mhagen at
Mon Feb 23 22:16:12 EST 1998

There used to be a gadget called a "ready mapper" or somesuch which was
about the same as a plane table, except smaller. It was about the size
of a dinner plate and let you draw scaled maps on the spot after you
oriented it. 

For a riparian thinning application how about one of those convex
mirrors. Densiometers, I think? They work fairly well at evaluating
crown closure.  One kind (concave?) doesn't get your head in the picture
as much.

Don Staples wrote:
> PHADRUIG wrote:
> >
> > sgough at (Steve Gough) writes:
> > >Anyone have experience with such high-precision thinning?
> > ---------------------------------
> > In a word, No!  BTNW, are you familiar with "plane table and alidade"
> > surveying?  Your project sounds like a good application for this method, which
> > is quite simple and directly produces a map showing the location of each tree -
> > or object - as you go.
> > Good Luck!
> Now that you mention it, yes, and I agree, we were taught this method in
> the 60's as a method of accurate stand discription and placement of
> stems.  But I think in the class room has been the only place I have
> ever used it.  It was time consuming then, and I haven't seen the
> necessary table and alidade in years.
> --
> Don Staples
> My Ego Stroke:

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