Sequestration in soil must mean micriobial/fungal metabolism (biomass, net
primary productivity ?) which is precursor to soil health and availability
for plant growth ?? what is role of physical chemistry of parent
substrate? and biogeography? somebody needs to do a SOILS conference to
address and & in preparation for an (sub-)urban/community ecosystem based,
biodiversity indicator plant//animal///soil metabolism (GEIS ?) planning
process? to manage C sequestration and mass balancing of
local/regional//point source greenhouse gasses and/or airborne polluntants?
Is the farm bill a planning process?
Best Regards, Bruce
======================================================================
"Whatever our accomplishments, our sophistication, our artistic pretension,
we owe our very existence to a six-inch layer of topsoil...and the fact
that it rains"
Anonymous, "The Cockle Bur"
----------------------------------------------------------------------
Date: Mon, 03 May 1999 18:49:39 -0500
From: Ronald Nigh <danamex@mail.internet.com.mx>
Subject: Re: composting conserves more C ?
Dear Sanet
Thank you Joel for this reference. However, I recall that the previous
discusion was concerned with several effects, not just "C stabilization",
which is the purpose of composting to begin with. There was also a question
of the effects on soil biology and structure of raw MO (mulch) vs.
application of compost.
J. Gruver wrote
(snip)
>..." Comparing C mineralization that
>takes place in soil and during composting, it can be concluded that
>composting is the best way to obtain maximum C stabilization..."
>
>Here is the bibliographic info...
>
>Bernal, M.P., Sanchez-Monedero, M.A., Paredes, C. and A. Roig. 1998.
>Carbon mineralization from organic wastes at different composting stages
>during incubation with soil. Agriculture, Ecosystems and Environment
>69:175-189.
>
>I have not read the whole article as of yet...
>
>Joel Gruver
>Soil Quality Research
>U of MD jgruv@wam.umd.edu
>
>
Ronald Nigh
Dana, A.C.
Mexico, D.F. & San CristÛbal de Las Casas, Chiapas
Tel. y FAX 525-666-73-66 (DF)
529-678-72-15 (Chiapas)
danamex@mail.internet.com.mx
To Unsubscribe: Email majordomo@ces.ncsu.edu with the command
"unsubscribe sanet-mg". If you receive the digest format, use the command
"unsubscribe sanet-mg-digest".
To Subscribe to Digest: Email majordomo@ces.ncsu.edu with the command
"subscribe sanet-mg-digest".
All messages to sanet-mg are archived at:
http://www.sare.org/htdocs/hypermail