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1、.地形因子LS制圖過程DEM（1:5萬）..水文分析中進(jìn)行填充（fill）填充后生產(chǎn)河流流向圖..填充后生成坡度圖根據(jù)上圖及公示生成坡度因子圖..con([Slope]<5,10.8*Sin([Slope])+0.036,con([Slope]<10,16.8*Sin([Slope])-0.5,21.9*Sin([Slope])-0.96))計(jì)算坡度因子過程圖con([Slope]<5,10.8*Sin([Slope]*3.1415926/180)+0.036,con([Slope]>=10,21.9*Sin([Slope]*3.1415926/180)-0.96,16.8*
2、Sin([Slope]*3.1415926/180)-0.5))..求得的S因子圖con([Slope]<1,0.2,con([Slope]<3,0.3,con([Slope]<5,0.4,0.5)))求得的M值圖..求得流向圖，為了算是否為根二con([flowdir]==2
3、[flowdir]==8
4、[flowdir]==32
5、[flowdir]==128,1.414,1)..Pow(90*[xiu]/(Cos([Slope]*3.1415926/180)*22.1),[mfac])con([slope]<5,10.8*Sin([slope]*3.1415926/180)
6、+0.036,con([slope]>=10,21.9*Sin([slope]*3.1415926/180)-0.96,16.8*Sin([slope]*3.1415926/180)-0.5)).
