CHARACTERIZATION OF A TOPOSEQUENCE WITH FRAGIPAN: THE LEEDS–STE. MARIE–BROMPTON SERIES OF SOILS, PROVINCE OF QUEBEC
[摘要] ThissequenceofsoilsdevelopedintheAppalachianHighlandsfromglacialtill,ofwhichthemajorcomponentwasslate.Thebedrockoccurredat1.75 mbelowthesurfaceandlargelyinfluencedtheprofiledevelopment.ThefirstprofilewasaPodzolunderwhichthefragipanwascharacterizedbymorphologicalandphysicalcriteria.ThesecondprofilewasaFeraGleysolwherethefragipanwasalsopresent,butlesswelldefinedthaninthePodzolbecauseofamoresandytextureinthedeposit.Finally,thethirdprofilewasanOrthicHumicGleysolwherethepersistenceofhighhumidityconditionsformostoftheyearwasnotfavorabletotheformationofthecharacteristicgraystreaksofafragipan.Itwasfoundfrommineralogicalanalysesthatillitewasthemajorconstituentoftheclayfractioninallthehorizons.However,expandingmineralswerealsopresentandweatheringsequencesweredetectedbutbecauseofthenatureofthedeposit,theweatheringprocessesappearedtobeslow.
[发布日期] [发布机构]
[效力级别] [学科分类] 农业科学（综合）
[关键词] [时效性]
