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Table 2

Key parameters and best fitted values in the three periods

Change typeParameterDescriptionRangePeriods
Baseline1990s2000s
CN2.mgt Curve number for moisture condition II (−0.5, 0.5) 0.35 0.29 0.14 
SOL_AWC.sol Available water capacity of the soil layer (−0.5, 0.5) 0.43 0.43 0.43 
SOL_Z.sol Soil depth (−0.5, 0.5) 0.21 0.21 0.21 
SOL_K.sol Saturated hydraulic conductivity (−0.8, 0.8) −0.04 −0.04 −0.04 
EPCO.hru Vegetation transpiration compensation coefficient (0.01, 1) 0.99 0.62 0.69 
CANMX.hru Maximum canopy storage (0, 100) 70.00 10.00 60.00 
SLSUBBSN.hru Average slope length (10, 150) 26.00 12.00 15.00 
OV_N Manning surface flowing coefficient (0, 0.8) 0.61 0.36 0.23 
CH_K2.rte Main channel conductivity (0, 150) 24.00 24.00 24.00 
ALPHA_BF.gw Base flow alpha factor (0, 1) 0.52 0.52 0.52 
REVAPMN.gw Threshold of evaporation in shallow aquifer (0, 500) 489.00 489.00 489.00 
GW_DELAY.gw Groundwater delay time (0, 500) 268.00 29.00 117.00 
GW_REVAP.gw Groundwater ‘revap’ coefficient (−0.02, 0.2) 0.10 0.10 0.10 
RCHRG_DP.gw Osmosis ratio in deep aquifer (0, 1) 0.09 0.09 0.09 
GWQMN.gw Threshold depth of water in shallow aquifer required for return flow to occur (0, 5000) 118.00 118.00 118.00 
Change typeParameterDescriptionRangePeriods
Baseline1990s2000s
CN2.mgt Curve number for moisture condition II (−0.5, 0.5) 0.35 0.29 0.14 
SOL_AWC.sol Available water capacity of the soil layer (−0.5, 0.5) 0.43 0.43 0.43 
SOL_Z.sol Soil depth (−0.5, 0.5) 0.21 0.21 0.21 
SOL_K.sol Saturated hydraulic conductivity (−0.8, 0.8) −0.04 −0.04 −0.04 
EPCO.hru Vegetation transpiration compensation coefficient (0.01, 1) 0.99 0.62 0.69 
CANMX.hru Maximum canopy storage (0, 100) 70.00 10.00 60.00 
SLSUBBSN.hru Average slope length (10, 150) 26.00 12.00 15.00 
OV_N Manning surface flowing coefficient (0, 0.8) 0.61 0.36 0.23 
CH_K2.rte Main channel conductivity (0, 150) 24.00 24.00 24.00 
ALPHA_BF.gw Base flow alpha factor (0, 1) 0.52 0.52 0.52 
REVAPMN.gw Threshold of evaporation in shallow aquifer (0, 500) 489.00 489.00 489.00 
GW_DELAY.gw Groundwater delay time (0, 500) 268.00 29.00 117.00 
GW_REVAP.gw Groundwater ‘revap’ coefficient (−0.02, 0.2) 0.10 0.10 0.10 
RCHRG_DP.gw Osmosis ratio in deep aquifer (0, 1) 0.09 0.09 0.09 
GWQMN.gw Threshold depth of water in shallow aquifer required for return flow to occur (0, 5000) 118.00 118.00 118.00 

Notes: r indicates that the default parameter multiplies 1 + given value as a percentage; v indicates that the default parameter is replaced by the given value; the bold-faced numerical values are dynamical LULC parameters in each period.

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