408
18. The Global Shrimp Market
OUTFLOWS;
beginning_development = actual_dev_rate
setting_as ide_land =
Hectares_Undeveloped*percent_of_land_into_reserve*regu1
ation_of_coastlands
Shrimp_in_Ponds(t) = Shrimp_in_Ponds(t-dt) + (stockingharvesting-stock_loss) * dt
INIT Shrimp_in_Ponds = 40000000*time_to_harvest
INFLOWS;
stocking
OUTFLOWS;
stock-per_hectare*Hectares_of_Ponds
harvesting = Shrimp_in_Ponds /time_to_harvest
stock_loss = Shrimp_in_Ponds*stock_loss_fraction
Sub_HA_Developing(t) = Sub_HA_Developing(t -dt) +
(beginning_sub_dev-subsidized_land_finishined_dev) * dt
INIT SUb_HA_Developing = 0
INFLOWS :
beginning_sub_dev
funds_for_land_subsidy/cost_to_develop-pond
OUTFLOWS :
sUbsidized_land_finishined_dev =
Sub_HA_Developing /time_to_develop-ponds
actual_dev_rate =
(((Profit_aquaculture*investment_fraction)+external_inv
estment_in-ponds) /cost_to_develop-pond)*(lland_limit_switch) +land_limi t_switch* land_l imi t_amount
cost_to_develop-pond =
effect_of_undev_ha_on_cost*lOOOO*effect_of_good_on_c_t°
_dev-p
current_to_initial_undev_ha =
Hectares_Undeveloped /INIT(Hectares_Undeveloped)
external_investment_in-ponds =
imp_of_cov_and-price_on_invest*normal_ext'l_investment
funds_for_land_subsidY =
Land_Subs idy*Land_Subs idy_Amount
investment_fraction =
2 /5*imp_of_cov_and-price_on_invest
land_limit_amount
0
land_limit_switch = 0
Land_Subsidy = 0
Land_SubsidY_Amount
40000000