I have some empirical P values for soil matter where P in soil is expressed as µg / g of soil. Is there any methodology to convert these spot values to usable input NDR P-Load values in the biophysical table for the different LULC classes? The only methods I can find currently are for water samples, not soil.
Can anyone at NatCap help me with this please? Still hoping for some help
Thanks for the question, we’ve reached out to see if any of our science leads had thoughts on this. We’ll post back when hear from them!
Hi @Lisa3 -
Sorry for the long delay. None of us here have made use of the kind of data you’re describing, but our hydrologist suggests not doing it. P in the soil can come from many processes and is not comparable to the P that is available for runoff. For instance, you can have a soil with lots of P fixed in the matrix, but this P is stuck there and won’t go anywhere with precipitation. It probably would be exported if the soil is eroded but this is not considered in the model.