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Thread: Forestry q

  1. #1
    Join Date
    Dec 2004
    Location
    Amherst, Mass.
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    4,176

    Forestry q

    Any idea what's represented by these numbers on the trees?
    The blue numbers have been there for at least several years; the white numbers were added more recently.
    The plastic pipe in the foreground has also been there for at least several years.
    Public land (forested park/reservation), but with a long prior history of pretty much everything.
    No other signs of any other sort of activity nearby (i.e., considerably off-trail).

    Click image for larger version. 

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    For those stuck in the Northeast, check out the NE Rando Race Series and my avalanche course. (For other avalanche course providers anywhere, feel free to use any of my "homework" assignments for your own courses too.)

  2. #2
    Join Date
    Jan 2007
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    in a van down by the river
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    Looks like a permanent sample plot. Pipe marks the middle of a plot. The purpose... could be almost anything: Growth and yield, habitat, volume...
    I don't work and I don't save, desperate women pay my way.

  3. #3
    Join Date
    Sep 2010
    Location
    Shuswap Highlands
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    2,337
    Most likely a permanent sample plot. Each tree numbered, measurements occurring at specified intervals. Can be used to establish growth and yield projections for the stand, or various other stand attributes (pathology, crown density, succession characteristics, etc.)

  4. #4
    Join Date
    Jan 2011
    Location
    Winthrop, WA. Methow valley
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    Yeah, what these guys said. Likely a chunk of rebar (permanent, fire resistant marker) inside the tube.

  5. #5
    Join Date
    Mar 2008
    Location
    northern BC
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    18,001
    Not a forester but i have slept with one

    I did some of this working as a forest tech for a research center

    so you put a tape on that pipe and measure out a 10 meter radius and core /measure heights with vertex/ measure diameter of all the trees or seedlings in the test area but our trees were always labeled with a plastic or metal number tag nailed to the trunk and seedlings would have a wire wand with a number marker but I have never seen spray paint ... they must not have much of a budget

    the last gig i did was with the dendrocronologist for pretty much the whole province of BC, he said there were 5000 plots in BC which had to be visited every 5 years, you had to be VERY accurate because your data would be multiplied by 100

    Test plots are usually not too far from the office and close to the road so they don't have to walk too much or use expensive transportation, if they added numbers later they are probably studying something else ... maybe they got some more money

    not a bad gig in the fall during the 1st nations summer when the bugs are gone and it ain't too hot
    Last edited by XXX-er; 03-14-2017 at 09:48 AM.
    Lee Lau - xxx-er is the laziest Asian canuck I know

  6. #6
    Join Date
    Dec 2004
    Location
    Amherst, Mass.
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    4,176
    Super, thanks -- plus special bonus for learning "dendrochronologist" as my new word of the day!
    For those stuck in the Northeast, check out the NE Rando Race Series and my avalanche course. (For other avalanche course providers anywhere, feel free to use any of my "homework" assignments for your own courses too.)

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