General discussions of the systemic, societal and civilisational effects of depletion.
by Valdemar » Wed 09 May 2007, 07:49:10
Once more, I have come across a good poster with regards to countering many arguments normally put for PO collapse. This post is a follow up to one where I posted, among other things, the link to the Die-off website's agriculture article.
I've been trawling this site and elsewhere for rebuttals to these points, but any feedback would be appreciated with regards to these points on agricultulral fuel usage, costs of building a nuclear reactor and so on. There are other parts that are much easier to counter, such as the peak drop-off being exacerbated by human factors in geo-politics rather than geological, but I can take care of those myself for the most part (though any better information to back this argument up would be appreciated).
Thanks in advance.
$this->bbcode_second_pass_quote('Sikon', '')$this->bbcode_second_pass_quote('Admiral Valdemar', 'A')griculture uses a lot more than many think. And the die-off is not going to be the same as the Third World. [...]
My previous post's figure of 1.7% of total U.S. energy consumption being used for agriculture is from a reliable government source, as shown before,
a publication of the state of Kansas discussing figures for the whole U.S.In contrast, your article is written for its political bias.
Still, the following particular part of it is not too bad, though not perfectly accurate:
$this->bbcode_second_pass_quote('Article', 'A')gricultural energy consumption is broken down as follows:
31% for the manufacture of inorganic fertilizer
19% for the operation of field machinery
16% for transportation
13% for irrigation
08% for raising livestock (not including livestock feed)
05% for crop drying
05% for pesticide production
08% miscellaneous
The above quote from your article would imply energy usage in agriculture being ~ 3.2 times greater than that involved in fertilizer production alone.
They also say:
$this->bbcode_second_pass_quote('Article', 'T')o give the reader an idea of the energy intensiveness of modern agriculture, production of one kilogram of nitrogen for fertilizer requires the energy equivalent of from 1.4 to 1.8 liters of diesel fuel. This is not considering the natural gas feedstock.9 According to The Fertilizer Institute (
http://www.tfi.org), in the year from June 30 2001 until June 30 2002 the United States used 12,009,300 short tons of nitrogen fertilizer. Using the low figure of 1.4 liters diesel equivalent per kilogram of nitrogen, this equates to the energy content of 15.3 billion liters of diesel fuel, or 96.2 million barrels.
While they obviously expect readers to be intuitively impressed by their 96 million barrel figure, a relevant comparison is U.S. oil consumption of around 7600 million barrels annually
(~ 2004 data here). Supposing ~ 96 million barrels a year for fertilizer would be ~ 1.3% as much. Combine with their earlier figures implying energy usage in agriculture being ~ 3.2 times greater than that for making fertilizer. Then, their figures would lead to an estimate of several percent of U.S. energy being used in agriculture.
While that's not very much anyway, actually their figures aren't right.
A far better publication is
here, from a relatively reliable .gov website. Not only does the preceding report show how energy use in U.S. agriculture is a bit more than 1.5 quadrillion Btu, compared to 100.4 quadrillion Btu total
(2004), they also show the components of the figure, graphs of changes over past years, and more info.
Of course, total energy involved in the food industry can be greater, like all of the energy used by restaurant workers driving to their jobs, plus everything else that could be added up depending upon one's criteria. For example, there would tend to be more energy indirectly invested in an expensive restaurant meal per hundred calories than in the corresponding portion of goods like a supermarket bag of flour. But that isn't very relevant for the necessary food supply. Rather, the primary concern is that involved in producing food before much extra processing. And that's not much, not compared to the total energy supply.
$this->bbcode_second_pass_quote('Admiral Valdemar', '[')...] Instead, you'll see material possessions start to disappear as more and more people find it harder to buy, or rather "consume", the products made today that keep the economy afloat. [...]
The general idea of potentially a very major economic depression is something suggested by me before, including in my preceding post, though it would not tend to last forever. But the particular degree of such effects matters a lot, a topic covered more later.
$this->bbcode_second_pass_quote('Admiral Valdemar', '[')...] If you want to make an electric fleet
The monetary costs of scooters, buses and trams mean nothing. [...]