摘要
Soilcrustingmayhavesignificantimpactsoninfiltration,runoffgenerationanderosioninagriculturallandsorsemi-aridandaridsoils.Thepreviousinvestigationsonsoilcrustingwereoftenconductedundersimulatedrainfallconditions.Thisstudyaimstoevaluatetheeffectsofsoilcrustingonsoilmoistureduringinter-stormperiodsandsoilandwaterlossesduringstormperiodsundernaturalrainfalls.ThestudysitewaslocatedintheLoessPlateauofChina.Fourplotswithauniformslopeandsizewereselected.Soilcrustswerekeptintactonthetwoplotsthroughoutthemonitoringperiodsof1999and2000,butwerebrokenaftereachrainstormeventontheothertwoplots.Soilmoisturewasmeasuredonallplotswithanintervalofoneweekatthreedepthsandtotaleventrunoffandsedimentdischargesweremeasuredineachstorm.Itwasfoundthatnomarkeddifferenceinsoilmoistureandrunoffexistsbetweenthecrustedanduncrustedplots.Thisisbecausetherapiddevelopmentofnewcrustsontheuncrustedplotsduringthestormevents.However,theerosionrateontheuncrustedplotswassignificantlyhigherthanthatonthecrustedplots,whichwasmainlycausedbythedisturbanceofthesurfacesoilsontheuncrustedplots.ThisstudyquestionstheeffectivenessofacommonagriculturalpracticeintheLoessPlateau,hoeinglandsafterrainfall,inreducingrunoffanderosion.
出版日期
2002年04月14日（中国Betway体育网页登陆平台首次上网日期，不代表论文的发表时间）
