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时间:2018-04-16
《营林措施对马尾松和杉木中龄林的影响》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、第43卷第1期广西林业科学Vol.43No.12014年3月GuangxiForestryScienceMar.2014文章编号:1006-1126-2014(1)-0046-05营林措施对马尾松和杉木中龄林的影响1,23332吴东山,聂剑才,黄振辉,罗永林,杨章旗(1.广西大学林学院,南宁530005;2.广西林业科学研究院,南宁530002;3.广西苍梧县富源林场,苍梧531407)摘要:以12年生不同造林密度的松杉混交以及纯林为对象,比较不同营林措施下的马尾松(Pinusmassoni-ana)和杉木(
2、Cunninghamialanceolata)生长变化。结果表明:同一造林密度2个树种的纯林和混交林在树高、2胸径、单株材积上均存在极显著差异,生长以混交林为优;造林密度在2000株/hm以下时,马尾松混交林的平均单株材积比纯林提高2.85%~13.96%,杉木平均单株材积比纯林提高8.77%~12.43%;马尾松纯林单株22材积随造林密度的降低缓慢增大,其余造林模式均在1665株/hm时达到最大峰值;1665株/hm密度下,混交林中的马尾松比纯林提高13.69%,杉木则提高12.43%。马尾松纯林、杉木纯林
3、和松杉混交达到林木蓄积量最232大的造林密度分别为1665、2500、2000株/hm,蓄积生长量分别为127.08、146.70、192.03m/hm。关键词:马尾松杉木混交;纯林;造林密度;林分生长中图分类号:S791.248文献标识码:AEffectsofSilviculturalMeasuresonMiddle-ageForestsofMassonPineandChineseFir1,23332WUDong-shan,NIEJian-cai,HUANGZhen-hui,LUOYong-Lin,YANG
4、Zhang-qi(1.ForsetryCollegeofGuangxiUniversity,Nanning530005,China;2.GuangxiForestryResearchInstitute,Nanning530002,China;3.GuangxiFuyuanForestFarm,Cangwu,Guangxi531407,China)Abstract:Using12-year-oldpine-firmixedforestswithdifferentplantingdensitiesandpuref
5、orestasmaterials,growthchangeofMassonpineandChinesefirwascomparedaccordingtothedifferentsilvicul-turalmeasures.Resultsshowedthattreeheight,DBHandsinglevolumeshowedsignificantdifferencesbetweenthemixedandpureforestsunderthesameplantingdensity.Andgrowthinmixe
6、dforestwasbet-2ter.Whenplantingdensitywasbelow2000strains/hm,averagesinglevolumeofMassonpineinmixedforestincreased2.85%~13.96%higherthanpureforest.Andfirwas8.77%~12.43%higher.SinglevolumeofMassonpineinpureforestincreasedwithdecreasingofplantingdensity.Thesi
7、nglevolumeof2restafforestationmodelsreachedthemaximumpeakat1665strains/hm.Belowtheplantingdensityof21665strains/hm,growthofMassonpineinmixedforestwas13.69%higherthanpureoneandfirwas12.43%higher.PureMassonpineforest,purefirforestandpine-firmixedforestreached
8、themaximum222volumewhenthedensitieswere1665strains/hm,2500strains/hmand2000strains/hmrespective-收稿日期:2014-02-05基金项目:中央财政林业推广示范项目(〔2011〕TK090);广西科技攻关项目(桂科攻1123004-4A);广西林业项目[桂林科字(2009)第4号];国家林业公益性行业科研专项
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