斜坡單元應用於山坡地土壤 流失量之研究 - 以 南投縣竹山鎮為例
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斜坡單元應用於山坡地土壤 流失量之研究 - 以 南投縣竹山鎮為例. Application of Slope Unit Methed in Soil Loss Prediction – A Case at Jhushan Township, Nantou County. 指導教授:林俐玲 教授 學生姓名:陳品岡 口試日期: 2011 年 6 月 20 日. 簡報大綱. 前言. 文獻回顧. 研究方法. 結果與討論. 結論. 前言. 前言. - PowerPoint PPT PresentationTRANSCRIPT
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Application of Slope Unit Methed in Soil Loss Prediction A Case at Jhushan Township, Nantou County.
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2011620
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(USLE)
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(Arc gis)
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USLE
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(Universal Soil Loss Equation, USLE) 1954Wischmeier and Smith (1978) 21 367,500 500
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Am = (/-)Rm= (10^6 -/--) Km= (---/10^6 ---)L=S=C=P=
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(1979)20 200 (2004)(2004)19752000(1979)(1956~1975) (1999)
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(1989)Whischmeier and Smith 280 Rm
(1991)
(2000)
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Wischmeier and Smith(1978)
m(%)0.5> 5.00.45.0 ~ 3.00.33.0 ~ 1.00.2< 1.0
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Wischmeier and Smith(1978)
McCool et al.(1987) S = 10.8sin + 0.03, 9% S = (sin / 0.0896)0.6, 9%
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(1995)
Fan and Lovell(1988)
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(1996)C
C 0.010.100.250.200.14
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(1995)1.2.3.4.5.6.
25 ton/ha
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Xie et al.(2004) Guzzeti et al.(1999)(slope break)Carrara et al.(1991, 1999)UmbriaGuzzeti et al.(1999)
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- (, 2009)
() () ~ ()()(fill)()()
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()()
()
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13002002200 ()
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() (DEM) () () () - 95
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() (Rm) (2004)
() (Km) (2000)
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()(aspect)(hillshade)(hillshade)
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()(slope)()(river)
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()ArcGIS()ArcGIS(vector)(racter)NONE
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(2004) ArcGIS
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(2000) ArcGIS
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5m 5m DEMsurfaceUSLE()P1
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(C)95C(2010)(C0.05)(50)C(C0.25)
C 0.010.050.050.050.050.200.2511
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()GIS()LSEXCEL(LS)() (ton/ha)1.4g/cm(140 ton/ha-cm)
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1.(FID)2.(Area) 3.(Rm)4.(Km)5.(L)6.(S)7.(C)8.(P)9.(Erosion)10.(Depth)
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123832412.6510.2
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USLEWischmeier and Smith(1978)3%~18%18%93% McCool et al.(1987)
(%)(1978)(1987) (%)>5>0.44>0.560.75 ~ 150.44 ~ 2.060.56 ~ 1.325.315 ~ 302.06 ~ 6.771.32 ~ 2.0110.130 ~ 406.77 ~ 10.762.01 ~ 2.3415.540 ~ 5510.76 ~ 17.432.34 ~ 2.7430.5
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123832C1
= 0.0119.1%2370.01 ~ 0.0525.4%3150.05 ~ 0.1537.2%4600.15 ~ 0.2517.3%214< 0.251.0%12
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(ton/ha)(cm)185.41.3250%57.70.4150%313.12.24
(ton/ha)(cm)69.10.4950%9.660.06950%129.02.24
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(cm)> 0.541333.40.5 ~ 120616.61 ~ 233527.12 ~ 318514.93 ~ 5887.0< 5111.01238100
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185.4 ton/ha1.32cm(2007)0.75cm(1995)25 ton/ha
185.4 ton/ha1.32 cm(2007)105 ton/ha0.75 cm(1995) 25 ton/ha0.18 cm
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(C)C86.7C0.0162.5%C=1 or 0.25
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1.320.492.692.480.962.582.502.441.020.080.081
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()()
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USLEUSLEC
89518.9308765.273915.6120.3
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()()()