Dear M.E. Asadi:

Thanks for your info.

I have more question:

CERES has an denitrification equation
DNRATE = 6.0*1.0E-05*CW*NO3(L)*FW*FT*DLAYR(L)
 
Where DNRATE is in kg [N} / ha. As you told me:  NO3(L) is in ug [N]/g [soil])     
 
My question is that:
if the bulk density and unit conversion are included by the 6.0*1.0E-05?   What is the reference paper to derive the 6.0*1.0E-05?
 
Jin Wu

----- Original Message ----- 
From: "Dr. mohammad asadi" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, August 25, 2006 3:28 AM
Subject: Re: the definition of NO3(L)


> Dear Jin Wu,
> 
> 
>  Hello. Be informed that the definition of NO3(L) and NH4 (L) which is soil nitrate (ppm or ug /g soil) and ammonium  respectively in layer L refer to per unit weight of soil (g-1 soil) and  NO3(L) is soil concentration.
> 
> 
>  Best regards,
> 
>  M.E. Asadi
> 
> 
> 
> 
>  M. E. Asadi,Ph.D, Research Scientist
>  Tel: 0098-171-3354868 (office)
> Mobile phone: 0098-0911-175-2719
> Fax: 0098-171-3359813
> Mailing Address:
> Mr. Asadi, Mail Box 49175-639, Gorgan, Iran
> 
> 
> 
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