I am thinking of systems such as the following:
agricultutal soils allowed to return to forest succession
road cut soils planted to crown vetch
agricultural soils planted to trees...
I am interested in vegetation mediated changes in soil fertility... upward
movement of cations or other changes...
Clearly in the tropics, the slash and burn system is based on vegetation
remediating depleted soils... has anyone looked at this in a temperate
U of MD, Agronomy