学科分类
/ 1
1 个结果
  • 简介:Theneedforreforestationincorkoak(QuercussuberL.)areasischallengedbydifficulties.Principalamongtheseisherbivoryofyoungplants,vegetativecompetition,andslowgrowthratesofcorkoakseedlings.WeevaluatedtheearlydevelopmentofcorkoakseedlingstreatedusingtreesheltersandmulchinginnorthwesternTunisia.Wetestedthreetreesheltertreatments(non-vented,vented,andcontrol)toshieldseedlingsfromanimaldamageandfivemulchtypestocontrolcompetingvegetation(ItalianStonePine,Lentisk,combinationofItalianStonePineandLentisk(organicmulches),gravel(inorganicmulch)andnomulch).Attheendofthetwo-yearexperiment,shelteredseedlingswere89-99%tallerthanunshelteredseedlingsandhadhighernumbersandlengthsofshootgrowthflushes.Incontrast,bothstemdiametergrowthanddryweightbiomass(fromsamplesextractedaftertwoyears)weresignificantlyreducedinsidetreeshelters.Root-to-shootratiowasnotsignificantlydifferentinshelteredvs.unshelteredseedlings,suggestingthattreesheltersdonotadverselyaffectthisparameter.Mulchingalonedidnotfavourgrowth,butcouldbebeneficialwhencombinedwithtreeshelters.Thecombinationofventedtreesheltersandgravelmulchwasthemosteffectivetreatmentforpromotingdiameter,heightandstemvolumegrowth.

  • 标签: QUERCUS suber L AFFORESTATION TREE shelter