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36 lines
1.6 KiB
HTML
36 lines
1.6 KiB
HTML
<html>
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<head><link rel="stylesheet" type="text/css" href="help.css" /></head>
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<body>
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<h1 class='module'>01: A Simple Litter System</h1>
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<div class='author'>(c) 2003 by O.Conrad</div>
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<div class='description'>A simple litter system model using the euler method. Carbon storage C is calculated in dependency of litter fall rate (Cinput) and rate constant for litter loss (Closs) as:<br/>
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C(t + 1) = C(t) + (Cinput - Closs * C(t)) * dt<br/>
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<br/>
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Typical values:<br/>
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<br/>
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- Tropical Rainforest:<br/>
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-- Litter fall rate: 500 [g/m<sup>2</sup>/a]<br/>
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-- Litter loss rate: 2.0 [1/a]<br/>
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<br/>
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- Temperate forest:<br/>
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-- Litter fall rate: 240 [g/m<sup>2</sup>/a]<br/>
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-- Litter loss rate: 0.4 [1/a]<br/>
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<br/>
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- Boreal forest:<br/>
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-- Litter fall rate: 50 [g/m<sup>2</sup>/a]<br/>
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-- Litter loss rate: 0.05 [1/a]<br/>
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<br/>
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Reference:<br/>
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Hugget, R.J. (1993): 'Modelling the Human Impact on Nature', Oxford University Press.<br/>
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</div>
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<h2>Parameters</h2>
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<dl class='parameters'>
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<dt>Results <div class='type'>Output Table</div></dt><dd> <div class='constraints'></div></dd>
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<dt>Time Span <div class='type'>Floating point</div></dt><dd> <div class='constraints'></div></dd>
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<dt>Time Interval [a] <div class='type'>Floating point</div></dt><dd> <div class='constraints'></div></dd>
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<dt>Initial Litter Storage [g/m²] <div class='type'>Floating point</div></dt><dd> <div class='constraints'></div></dd>
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<dt>Litterfall Rate [g/m²/a] <div class='type'>Floating point</div></dt><dd> <div class='constraints'></div></dd>
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<dt>Rate Constant for Litter Loss [1/a] <div class='type'>Floating point</div></dt><dd> <div class='constraints'></div></dd>
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</dl>
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</body></html>
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