Name

Default

Unit

Symbol

Comments/Explanations

Up Start

120

#

Day number for start of plant carbon and nitrogen uptake.

Up End

240

#

Day number for plant uptake of carbon and nitrogen to end.

UpA Coef

20

g N/m² yr

p_ua

Potential nitrogen uptake. A typical value for a grain crop is 20, for a grass layer a typical value is 40. Coefficient governing the plant nitrogen uptake in the logistic growth function. Viewing function Potential uptake of nitrogen – logistic growth.

UpB Coef

1

-

p_ub

Coefficient governing the plant nitrogen uptake in the logistic growth function. Viewing function Potential uptake of nitrogen – logistic growth.

UpC Coef

0.12

/day

p_uc

Coefficient governing the plant nitrogen uptake in the logistic growth function. Viewing function Potential uptake of nitrogen – logistic growth.

Up CN Ratio

25

-

cn_p

C-N ratio of the assimilated biomass in the logistic growth function.