Soil Management

Ploughing and surface cultivation can optionally be applied to a soil (see switches “Deep ploughing and Surface cultivation). When these events occur (parameters m_s,day and m_p,day ) the surface litter is allocated to the litter pool(s) (and humus pool if microbes are explicitly simulated) down to a certain depth determined by the parameters, m_s,dep and m_p,dep, for surface cultivation and deep ploughing respectively. The fractions of the surface litter going to the different pools is calculated by multiplying the carbon and nitrogen content in the surface litter pool with a ratio for each soil organic pool. These ratios are of cause depending on the number of receiving pools:

1.  Microbes are implicit → only one litter pool:
                                                                                                (5.76)

2.  Microbes are explicit and only one litter pool is simulated:
                                                                                    (5.77)
                                                                                        (5.78)

 

 

3.  Microbes are explicit and two litter pools are simulated:
                                                                         (5.79)
                                                                         (5.80)
                                                                             (5.81)

 

 

where l_l1, l_l2 and l_h are parameters described in the section Soil Organic Processes.

At ploughing not only the surface litter but also the carbon and nitrogen in the root pool is allocated to litter pool 1 and uniformly distributed in the soil profile.

More:

Switches

Parameters