Forest Service caught using misleading photo - Area shown suggested natural area but was actually logged

mhagen replyto at group.only
Sun Apr 18 12:02:37 EST 2004


Donald L Ferrt wrote:

> "Bob Weinberger" <bobsstuff at verizon.invalid.net> wrote in message news:<Bdngc.6643$Aq.879 at nwrddc03.gnilink.net>...
> 
>>"Donald L Ferrt" <wolfbat359 at mindspring.com> wrote in message
>>news:b9eb3efe.0404171453.46a02f0e at posting.google.com...
>>
>>
>>>You cheat grass which matures in June, offers an explosive understory,
>>>just waiting to explode into the branches of pine trees, no matter how
>>>high they are that native grasses that did not mature until August and
>>>September did not!
>>>
>>
>><snip>
>>
>>You're way off base with your analysis of the results of that study , and
>>how it relates to the effect of cheatgrass on fires in Ponderosa Pine.
>>While as the article you cite concluded that:
>>1. cheat grass burns very readily.
>>2. fires are more common on cheatgrass dominated lands than on lands where
>>native grasses dominate.
>>3. cheatgrass matures into a flamable state much earlier in the season than
>>native grasses.,
>>all that is irrelevant to stand consuming fires in Ponderosa Pine forests
>>(especially in stands of Mature PP) because:
>>1. while cheatgrass is extremely flammable, it is a very flashy fuel that
>>burns extremely rapidly, but generates relatively low flame heights and
>>temperatures.
>>2. the ecology of cheatgrass is such that it seldom is a significant
>>presence under a tree canopy, and in those few cases where it is a majority
>>species in the understory it tends to be rather unthrifty , producing
>>relatively low fuel loads.
>>3. because cheatgrass matures and dries out early, by the time "normal" fire
>>season arrives, often much of the fuel it has produced is laying on the
>>ground, or is scattered and blown away.
>>
>>While cheatgrass may be a significnt factor in the number of range fires
>>that escape into the forest, once the fire is in actual forest cover,
>>cheatgrass is rarely a factor that has enough impact on the situation to
>>ever be a consideration in fire planning , actions, or preventative
>>measures.
> 
> 
> 
> Which is totally dependent on Conditions:
> 
> http://www.cpc.ncep.noaa.gov/products/analysis_monitoring/regional_monitoring/palmer.gif
> 
> During the fire in Colorado near Fort Collins, which was grass
> started, the green growth that was there on the ground was going up in
> explosive embers!
> You have to specify conditions!  If you had seen most of the homes
> that went up in the Haymane fire in Colorado, you will see a lot
> burned with no trees around at all; but a lot of grass!
> 
>  http://home.pcisys.net/~mnhaase/

Don't know beans about cheat grass but that wide spacing between fuel is 
usually a sign of extreme flame lengths and high winds.  I've seen it 
when the grass was still green - but everything above was carbonized.



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