Pedogenic carbonate
Pedogenic carbonate
Pedogenic carbonate
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Depth to <strong>carbonate</strong> horizon<br />
• Carbonate comes from…<br />
– Ca: dust (windblown)<br />
– C- decomposition of organic<br />
matter/atm/resp<br />
• Soluble, so depth is a<br />
function of rainfall…<br />
– Reported relationship<br />
• Depth to top of calcic horizon<br />
correlated to MAP<br />
• R2=.62, stdev=149mm<br />
• Reanalysis, more data r2=0.31
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