by eric_b » Thu 04 May 2006, 17:54:17
$this->bbcode_second_pass_quote('seldom_seen', '
')In ecological terms our cities can be described as "detritus ecosystems." Whereby the ability to support organic life is completely dependent on inputs from outside the system. I might even go a little further and call them parasitic detritus ecosystems because they don't provide any sort of benefit by and large to surrounding natural systems.
I don't think I've ever heard someone say "Well, I'm peak oil aware now and part of my preperations will be to try and get an apartment in manhattan." Or "That's it, this peak oil stuff is serious. Time to move to a condo in central Los Angeles." : )
A detritus ecosystem is a good way to describe our cities.
Vast tracts of land are razed, then covered in concrete
and asphalt or gravel. More land, in an ordered grid-like
fashion, is subdivided to make room for housing, etc. Large
amounts of earth are excavated for foundations and basements.
In order to feed this concentration of people, a very
large percentage of the ajacent lands are used to intensively
grow crops.
The 'hidden' factor(s) in all this are the enormous amounts
of energy (at this point primarily detritus fossil fuels)
it takes to keep the show running. In some ways it's too well
hidden, as most people aren't really aware of it. Each city
in effect has it's own river system - plumbing and sewers -
which deliver and carry away waste water. A very large fraction
of electicity is devoted to simply pumping water. Ever had
to pump and carry more than five gallons of water a time?
Heavy stuff. Most people would have trouble carrying the amount
of water they flush down a toilet in a single day.
Millions of gallons of liquid fuel - primarily gas - are
delivered and consumed daily, largely to transport goods and
poeple. All modern western agriculture requires huge amounts
of cheap petroleum. Tonnes and tonnes of coal and nat. gas are
burned in an organized frenzy everyday to generate the
electricity to do all this. It's not even certain with
depleting aquifers and soils how sustainable factory agriculture
is.
Take away all the energy to do this and the pretty illlusion
of a tidy western city will not last long. At this point the
burn has progressed to the point where there's no way it's going
to be sustainable for any length of time.
So I disagree with the poeple that think any die-off is not
going to effect the west and/or more affluent nations. It may
just take longer to manifest, but things will likely get
very ugly in the west too.