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常用流域地貌形态测量参数汇总与计算方法
（版本2，更新时间2021.1.6）
赵岩
1.常用流域地貌形态测量参数汇总表
No.
MorphometricParameters
Formula
Units
Reference
1
BasinArea(A)
GISanalysis
km2
ADDINCSL_CITATION{citationItems:[{id:ITEM-1,itemData:{DOI:10.1130/0016-7606(1956)67[597:EODSAS]2.0.CO;2,ISSNabstract:ToanalyzethedevelopmentoferosionaltopographythewriterstudiedgeomorphicprocessesandlandformsinasmallbadlandsareaatPerthAmboy,NewJersey.Thebadlandsdevelopedonaclay-sandfillandweremorphologicallysimilartobadlandsandareasofhighreliefinsemiaridandaridregions.Afifth-orderdrainagesystemwasselectedfordetailedstudy.CompositionofthisdrainagenetworkconformstoHortonslaws.Withinanareaofhomogeneouslithologyandsimplestructurethedrainagenetworkdevelopsindirectrelationtoafixedvaluefortheminimumarearequiredforchannelmaintenance.Observedrelationshipsbetweenchannellength,drainage-basinarea,andstream-ordernumberaredependentonthisconstantofchannelmaintenancewhichisinturndependentonrelativerelief,lithology,andclimateofanyarea.Othercharacteristicsofthedrainagenetworkandtopographysuchastexture,maximumslopeangles,streamgradients,drainage-basinshape,annualsedimentlossperunitarea,infiltrationrate,drainagepattern,andeventhemorphologicevolutionoftheareaappearrelatedtorelativereliefexpressedasareliefratio,theheightofthedrainagebasindividedbythelength.Withinonetopographicunitorbetweenareasofdissimilarbuthomogeneouslithologythereliefratioisavaluablemeansofcomparinggeomorphiccharacteristics.Hypsometriccurvesareavailableforaseriesof11second-orderdrainagebasinsranginginstageofdevelopmentfrominitialtomature.Reliefratioandstreamgradientsattainaconstantvaluewhenapproximately25percentofthemassofthebasinhasbeeneroded.Basinshapebecomesessentiallyconstantat40percentofmassremovedin
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