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Subject:
Nitrification model
From:
Jin Zhong Wu <[log in to unmask]>
Reply To:
DSSAT - Crop Models and Applications <[log in to unmask]>
Date:
Wed, 4 Oct 2006 10:41:54 -0400
Content-Type:
text/plain
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text/plain (16 lines) 
Dear Sir/Madam:

I have a question for the nitrification model of CERES.

The  ammonium (SNH4(L)) which is nitrified on a day is  (A*40.0*NH4(L)/NH4(L)+90.0))*SNH4(L) 

Where I assume the NH4 is 6 ppm, i.e. 6 *10^-6 g of N/cm^3 of soil  

"A" is factor of concentration, temperature, etc. I assume A=0.5

Thus the ammonium (SNH4(L)) which is nitrified on a day is  (120/96) * SNH4(L)=1.25 SNH4(N)

Is it too large? Is it large than the amount of NH4 in the layer?

Jin Wu

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