How Long?

How Long?

Postby Glacier » Aug 20th, 2019, 4:21 pm

This clearcut outlined in red was leveled in 1985. My dad working re-planting it in 1987. That was 32 years ago for you folks who don't do math.

Q: How long does it take to regrow a forest?
A: Well beyond 30 years. Probably at least double that, maybe even 5 times that.

P.S. Notice how short the trees are beside the road? Well, that's because the Douglas Fir burned in a fire in 1957. What you see here are lodgepole pine. The fir has yet to grow back. That will take another 300 years before they do.

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Re: How Long?

Postby 60-YEARS-in-Ktown » Aug 20th, 2019, 5:35 pm

2 times maybe or less, not by times.
If its been clear cut before, it will probably be harvested again when it reaches Merch size .
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Re: How Long?

Postby seewood » Aug 20th, 2019, 6:27 pm

Glacier wrote:Q: How long does it take to regrow a forest?


Interior, coast, northern climes?
All zones have varying growing seasons, rain fall, soils.
The trees under the original gondola at Grouse MT. for example is 3rd growth. Currently suitable size for harvesting. Took about 50 years.
I have felled a 24 inch fir that was 90 years old. A 48" fir that was perhaps 400 years.
I was recently on Gambier Island, Just before Gibson's and I walked through a stand of second growth Red Cedar that was averaging 36+ inches and would be perhaps 120 years old or more. Area was logged with A-frames way back then.

Williams Lake area, I believe the rotation for harvesting plans on a sustainable basis was 80 years or so.
In the dry belt fir there, it is selectively harvested and another harvest may be on a 40 year rotation.
If it is planted after harvest, the stand has about a 5-10 year head start if left for natural regeneration.
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Re: How Long?

Postby Glacier » Aug 20th, 2019, 7:03 pm

The clear-cut above is at 5000 feet (plus and minus) in the Chilcotin so probably very slow growing.
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Re: How Long?

Postby 60-YEARS-in-Ktown » Aug 20th, 2019, 7:04 pm

Toothpick Mountain in Manning park was fresh burnt around 50 to 55 years ago. Looks harvestable now hard to tell it even burnt, except a lot of snags.
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Re: How Long?

Postby 60-YEARS-in-Ktown » Aug 20th, 2019, 7:07 pm

Logdgepole often comes in after a burn.
Between Joe Rich and Beaverdell is mature lodgepole, I would say.
Pretty sure it burnt about 70 or so years ago... a natural occurrence.
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Re: How Long?

Postby bb49 » Aug 21st, 2019, 3:22 pm

I worked on a thinning crew in 1970 between Qualicum and Courtney, pulling out Douglas fir that were up to 12 inches in diameter. Hand falling and line skidding.
They had been planted in the 1940s.

And as for Lodgepole pine, as someone stated, in the Central Interior it takes at least 80 years to reach merchantable size.
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Re: How Long?

Postby Glacier » Aug 21st, 2019, 3:26 pm

bb49 wrote:I worked on a thinning crew in 1970 between Qualicum and Courtney, pulling out Douglas fir that were up to 12 inches in diameter. Hand falling and line skidding.
They had been planted in the 1940s.

And as for Lodgepole pine, as someone stated, in the Central Interior it takes at least 80 years to reach merchantable size.

If it's douglas fir, whitebark pine, or englemann spruce it's going to be even longer than 80 years, which is what naturally grows in the clearing in the picture (along with lodgepole pine).
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Re: How Long?

Postby 60-YEARS-in-Ktown » Aug 21st, 2019, 4:01 pm

You best take a look at Toothpick mtn in Manning Park, it ain't been 80 years..
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Re: How Long?

Postby 60-YEARS-in-Ktown » Aug 21st, 2019, 4:02 pm

If you logged it , or planted it you likely won't be harvesting it.,
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Re: How Long?

Postby Glacier » Aug 21st, 2019, 4:11 pm

60-YEARS-in-Ktown wrote:You best take a look at Toothpick mtn in Manning Park, it ain't been 80 years..

But are the Dougie Fir trees 4 feet across the second time around?
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Re: How Long?

Postby 60-YEARS-in-Ktown » Aug 21st, 2019, 6:27 pm

Not in your or your children's lifetime , it will take longer.
I am not clear on what exactly you are asking. A mature old growth forest would take a very long time.
I think a lot of the trees we cut in Revelstoke were 600 to 800 years old or older.
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