A Risk-Based Interval Two-Stage Programming Model for Agricultural System Management under Uncertainty

Table 2

Environmental parameters presented as discrete intervals.

Planning period (k)	Agricultural zone ()
	i = 1	i = 2	i = 3	i = 4	i = 5
The concentrations of the pollutant TN in the surface runoff from cropland (mg/L)
k = 1	1.25, 1.45	0.95, 1.15	1.35, 1.55	0.90, 1.10	1.10, 1.30
k = 2	2.15, 2.50	1.80, 2.15	2.50, 2.85	1.65, 2.00	2.05, 2.40
k = 3	4.20, 4.65	3.45, 3.90	4.55, 5.00	3.10, 3.55	3.95, 4.40
The concentrations of the pollutant TP in the surface runoff from cropland (mg/L)
k = 1	0.14, 0.16	0.11, 0.13	0.16, 0.18	0.09, 0.11	0.13, 0.15
k = 2	0.24, 0.27	0.20, 0.23	0.26, 0.29	0.17, 0.20	0.23, 0.26
k = 3	0.44, 0.49	0.40, 0.45	0.46, 0.51	0.34, 0.39	0.43, 0.48
The concentrations of the pollutant TN in the surface runoff from forestland (mg/L)
k = 1	0.55, 0.65	0.60, 0.70	0.75, 0.85	0.50, 0.60	0.50, 0.60
k = 2	0.95, 1.15	1.10, 1.30	1.20, 1.40	0.85, 1.05	0.80, 1.00
k = 3	1.65, 1.95	1.90, 2.20	2.15, 2.45	1.50, 1.80	1.40, 1.70
The concentrations of the pollutant TP in the surface runoff from forestland (mg/L)
k = 1	0.03, 0.04	0.04, 0.05	0.04, 0.05	0.03, 0.04	0.03, 0.04
k = 2	0.06, 0.08	0.07, 0.09	0.07, 0.09	0.05, 0.07	0.04, 0.06
k = 3	0.09, 0.12	0.11, 0.14	0.12, 0.15	0.09, 0.12	0.08, 0.11

Note: the related data are referred to Liu et al. [22].