学科分类
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1 个结果
  • 简介:Nepalisoneofthetopthreeexportersoflargercardamom(AmomumsubulatumRoxb.)intheworldmarketcontributinglargelytotheNepaleseeconomy.Sub-HimalayanrangeofhillyareaofeasternNepalispopularforlargecardamomcultivation.Beingsimilarphytogeographicalandecologicalsetting,cultivationhasbeguninhillsofKathmanduValleyhoweverlandsuitabilityneedstobeevaluatedwithreferencetospecificneedofthecrop.Kathmanduisavalleywithalluvialbottomandaltitudinalrangebetween1200and2730mabovesealevelhavingcooltowarmtemperateclimaticrange.Varietiesofaspectsandslopegradienthavepotentialityforthelargecardamomcultivation.Aimofthestudywassettocategorizeavailablelandareaintherangeofsuitabilityforlargecardamoncultivationonthebasisofphysicalcharacteristicsofthelandandecologicalneedofcrop.LandevaluationmethodologyhasbeendesignedalongwithsitespecificamendmentinFAOframework(1976).Landusemapinscaleof1:25000wasusedingeographicinformationsystemenvironment.Suitabilitywasdonethroughmapoverlayingmethods.Aimofthestudywassettocategorizeavailablelandareaintherangeofsuitabilitycategoriesforlargecardamomcultivationbasedonphysicalcharacteristicsofthelandmatchingwithecologicalneedofcrop.AnalysisofdatashowsthataltitudinalrangeatuplandsofKathmanduValleyandannualaveragerainfallandtemperaturearefoundtobewithinsuitabilityrangeforAmomumsubulatumcultivation.Sandyloamsoil,slightlyacidicinnaturewithgentleslopinglandofabout5-8°provideshighlysuitablecondition.Resultshowedthatmorethanone-thirdoftotallandareaabove1800mofaltitudeissuitable.Selectively,ofthetotalarea,5%arenorthfacingslope,13%gentleslopesarehighlysuitable.16%landswithnortheastorientationaremoderatelysuitable.Mostofthelandareaswhicharemarginalysuitabileforvegetableandcerealcropsarehighlysuitableforlargecardamom.Hillsofnorthernboundary

  • 标签: 土地面积 平均降雨量 种植范围 喜马拉雅山脉 丘陵地区 生态环境