[Terrapreta] Praire is natures way of making terra preta.

[lou gold]

Hmmm. I grew up in Illinois and was taught that the deep rich black loam
soils were "pushed" to their present locations as advancing glaciers scraped
away the top-soils to the north. Is this an incorrect view?

I think my wording was a bit inaccurate.  All soils grow through nature's
processes.  My  point was simply that they did not grow to the great depths
in the Midwest as they did and do in the Amazon. Soil that grew to the north
was deposited along with native growth.

On 9/1/07, Gerald Van Koeverden <vnkvrdn at yahoo.ca> wrote:
>
> lou,
> Glacial deposits are not soil...they are piles of ground up rock and
> gravel.  Soils are what develop on them over time, and how nature does that
> is what we are interested in.
>
> gerrit
>
> On 1-Sep-07, at 9:56 AM, lou gold wrote:
>
> Yes, very interesting suggestion. I also have been wondering about the
> role of fire (natural and managed) in building soils in both forest and
> grassland ecologies.
>
> I not sure where you are located but,  if you are speaking about the deep
> soils of the US Midwest, they were mostly deposited by glacial scraping of
> the lands to the north. Unlike, the Amazonian dark earths they did not grow
> on site.
>
> lou
>
> On 9/1/07, Brian Hans <bhans at earthmimic.com> wrote:
> >
> > I have been musing about this statement for a while now. As far as I
> > know, Ive coined it.
> >
> > I think the hypothesis speaks for itself. After doing native
> > restorations, mostly prairies for over 10 years, bio-char in small dose y/y
> > seems quite likely to aid in the production of the luscious prairie soils
> > 6ft+ deep. Infact, the prairie ecosystem is literally addicted to fire so
> > bio-char is inevitable. I am going to bring this topic up to some of
> > my prairie academics this fall but I was curious as to what the group
> > thought?
> >
> >  Brian Hans
> >
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> >
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