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- Path: sparky!uunet!elroy.jpl.nasa.gov!swrinde!mips!darwin.sura.net!jvnc.net!rutgers!psuvax1!psuvm!mek104
- From: MEK104@psuvm.psu.edu
- Newsgroups: talk.environment
- Subject: Re: Libertarians & the environment
- Message-ID: <92205.123628MEK104@psuvm.psu.edu>
- Date: 23 Jul 92 16:36:28 GMT
- Organization: Penn State University
- Lines: 28
-
- > in <hank.711879926@well.sf.ca.us> hank@well.sf.ca.us writes:
-
- >Briefly, even assuming that old growth forests are in equilibrium at any
- >given time, they're producing topsoil (which is at least half arthropod
- >shit, in the temperate coniferous rain forests). The steady conversion of
- >CO2 into topsoil is the contribution that old growth forests make (well,
- >they also convert it into salmon, and other interesting forms of solidified
- >carbon).
-
- >Most of the CO2 released from intensive logging is from oxidation of soils,
- >not from the trees.
-
- Studies on tree physiology have demonstrated that carbon fixation rates (ie
- photosynthesis) generally increases with increasing CO2 concentration, to a
- point.The greatest carbon sink in any forest is the vegetation, particularly
- the woody vegetation. When a tree falls over, wood munching critters injest
- the carbonand release much of it through respiration. Insect frass only
- contributes very little to the organic material in soil. Most of it is
- vegetative in origin.
-
- When trees are cut, not all of the carbon in those trees is released
- immediately because much of the wood goes into structures, etc. The problem
- is not with harvesting trees, the problem is with decreasing forested area,
- like in the tropics, which ultimately decreases the volume of the carbon
- sink. Cutting trees and decreasing forested area are not necessarily
- synonymous.
-
- Mark
-