18.6. Questions a nd Tasks
40 7
INFLOWS :
abandoning
abandoning_bad-ponds+abandoning_good-ponds
OUTFLOWS:
replanting
Hectares_Abandoned /time_to_replant*Replanting_switch
Hectares_Developing(t) = Hectares_Developing(t-dt) +
(beginning_development-finishing__development) * dt
INIT Hectares_Developing = 12000
INFLOWS:
beginning_development
OUTFLOWS :
actual_dev_rate
finishing__development =
Hectares_Developing /time_to_develop-ponds
Hectares_in_Reserve(t) = Hectares_in_Reserve(t -dt) +
(setting_aside_land) * dt
INIT Hectares_in_Reserve = 0
INFLOWS :
setting_as ide_land
Hectares_Undeveloped*percent_of_land_into_reserve*regu1
ation_of_coastlands
Hectares_of_Ponds(t) = Hectares_of_Ponds(t-dt) +
(finishing__deve1opment +
subsidized_land_finishined_dev-abandoning) * dt
INIT Hectares_of_Ponds = 200000
INFLOWS:
finishing__development
Hectares_Developing /time_to_develop-ponds
subsidized_land_finishined_dev =
Sub_HA_Deve1oping /time_to_develop-ponds
OUTFLOWS :
abandoning = abandoning_bad-ponds+abandoning_good-ponds
Hectares_Undeveloped(t) = Hectares_Undeveloped(t-dt) +
(rep1anting-beginning_deve1opment-setting_aside_land) *
dt
INIT Hectares_Undeveloped
20000000
INFLOWS :
replanting
Hectares_Abandoned /time_to_replant*Replanting_switch