A4960N022

(Modify Penman EquationPMM)(Pan FactorPF)(FWSfree water surface flowA1 )(SSFsubsurface flowA2 )(A3 )(B )A1A2A3 B PMM (mean absolutepercentage errorMAPE)857963 66PF MAPE 463323 65PMM PF (KC)A1 PMM (KCm-A1)7.19MAPE

85 35PF (KCp-A1)1.47MAPE 46 36A1 B Penman MAPE 86 23PF MAPE 65 36A1 BMAPE 86 67 0.33 0.33PMMPF

evapotranspiration

(Evaporation)(Transpiration)(Evapotranspiration)70%

(1980)(2003)11.81410-4 m3/m2/d1.17710-2 m3/m2/d3.34710-4 m3/m2/d(2005)2~5.1mm/d-0.5~2mm/d

(1987)Blaney-CriddleThornthwaite Modify Penman Modify Penman (1987)Penman Penman (1990)(1987)4 Priestley-TaylorJensen-Haise Hargreaves Modify Penman Modify Penman

(Modify Penman EquationPMM)(Pan Factor EquationPF)

A(123)()B ()

3.1.

()69cm47.5cm66cm free water surface flow systemFWSA1 subsurface flow systemSSFA2 A1 FWS 15cm Typha orientalis Presl.0.45m1.14 A2 SSF 30~40mm52Phragmitescommunis L.0.4m0.61 A3 SSF A2

3.2.

(B )11,000 m2()(subsurface flow system, SSF)(freewater surface, FWS)340CMD2,300 m2 0.7mSSF 15,00 m2 0.4 m

3.3.

FWS SSF

3.4.

(FAO)1984 Modify Penman

ETo(mm/day)(kPa-1) r(r0.66kPa-1)Rn(MJm-2d-1)l(MJKg-1)f(U)ea(kPa)ed(kPa)

T()Rns(MJm-2d-1)Rnl(MJm-2d-1)StefanBoltzmann (=5.6710-8Wm-2K4)Ta(K)Rs(MJm-2d-1)N(hrs)n120(Wm-2)(hrs)RH%

S(%)(Hammer & Kadlec 1983)PF(Pan Factor)

1 mean absolutepercentage error; MAPE

no Xmi Xpi MAPE50

1~4 FWSA1 SSF(A2 )SSF(A3 )(B )2008.02.12 ~05.18 2008.02.12 ~06.102008.04.20~08.09 2008.01.01 ~03.31 (ET)(E)PMM PF .1~2A1 A 12.129.4A1 FWS (ET)2.10cm/d 4.75cm/d3.44cm/dFWS 2008.02.12~03.19 2008.03.19~05.18 4.75cm/d(2003)FWS A2 SSF FWS

3 A3 2008.04.20 ~08.09 23.1~30.2A1 A2 27.71.14cm/d 3.16cm/d 2cm/dA3 FWS SSF(B)3.00cm/d

(13)MAPE1~2A1 PMM MAPE 85FWS PFMAPE 4630 60PF FWS A2 A1 PMM PF MAPE 79 32SSF FWS PF 25 36PF

A3 SSF PMM PF MAPE 63 23PF PF B PMM PF MAPE 66.3 64.6PF B

(1)(8)(KC)(PMM)(PF)KCmKCpSPSS Scheffe Bonferroni Scheffe Bonferroni (ET)Penman PF 0.05FWS (A1)Penman(KCm-A1)7.19MAPE 85 35PF (KCp-A1)1.47MAPE 46 36

B Penman MAPE86 23PF MAPE 6536A1 PMM PF MAPE 85 46MAPE4.7 4.9BMAPE86 67 0.33 0.33PMM PF (A2)Penman (KCm-A2)5.04MAPE 79 32PF (KCp-A2)1.11MAPE 33 29

A1A2A3 B PMM MAPE 857963 66PF MAPE463323 65PMM PF (KC)A1 PMM (KCm-A1)7.19MAPE 85 35PF (KCp-A1)1.47MAPE 46 36A1 BPenman MAPE 86 23PF MAPE 65 36B MAPE 86 67 0.33 0.33PMM PF