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时间:2019-03-06
《辽宁东部山区高龄日本落叶松林的生长分析》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、维普资讯http://www.cqvip.com林业科学研究2005,18(5):524~529ForestResearch文章编号:1001—1498(2005)05-0524-06辽宁东部山区高龄日本落叶松林的生长分析术王贺新,朱教君h,陈英敏,刘足根,乌凤章,吴娟(1.中国科学院沈阳应用生态研究所,辽宁沈阳110016;2.大连大学综合研究中心,辽宁大连16622;3.辽宁省林业厅,辽宁沈阳110031)摘要:以辽宁省东部山区残存的少量高龄日本落叶松人工林为对象,调查分析了林分及林木的生长特征。结果表明,在林龄60~86
2、年生的日本落叶松人工林分当中,直径≥3Ocm的大径材比率均在90%以上;各调查林分的胸径连年生长量还维持着一定的旺盛生长势,间伐后胸径生长变化率向正的方向转变趋势明显;与日本落叶松原产地日本长野县相比,林木的树高和胸径生长几乎没有差异。按照日本的落叶松长伐期经营标准,这些调查林分还具有较大的生长潜力,可进一步大幅度延长其培育年限,实施长伐期经营。关键词:日本落叶松人工林;高龄林分;生长分析;长伐期经营中图分类号:s791.223文献标识码:AStudyontheGrowthofOldLar/x/epto/ep/sStandsi
3、nMountainousRegionsofEasternLiaoningProvinceWANGHe—xin,ZHUJiao-jun,CHENYing—min,Zu.gen,Feng—zhang,WUJuan(1.InstituteofAppliedEcology,ChineseAcademyofSciences,Shenyang110016,Liaoning,China;2.ResearchCenterofDalianUniversity,Dalian116622,Liaoning,China;3.ForestryDepar
4、tmentofLiaoningProvince,Shenyang110031,Liaoning,China)Abstract:LiaoningprovinceisoneofareaswithalonghistoryofintroductionofLar/xleptolepisGordonandisthelargestareaofLplantationinChina.ProductionoftheshortrotationandsmalldimensionwoodwasthemajorwayofmanagementofLlept
5、olepisforalongtime,astheresult,over60-year—oldL.1eptolepisstandswereseldomtotheseen.Inrecentyears,muchL.1eptolepisplantationweredefinedascommonwealforestaccordiytoclassifiedforestmanagement.therefore,afewL.卸£o卸standswouldbegivenupthewayofshortrotationandbeselectedth
6、ewayoflongrotation.However,nowthemanagementexperienceoflongrotationwereabsentinChina.Thispaperanalyzedthegrowthcharacter-isticsoftreeandstandofoldL.oZepremainedinmountainousregionsofeastLiaoningProvince.Theresultsshowedthattherateoflargedimensionwoodwithdiameteratbr
7、eastheightover30cmaccountedfor90%in60,、一86-year—oldL.1eptolepisstands,andcurrentannualincrementofdiameteratbreastheightstayedhighgrowthinallinvestigatedstandsandthePercentageGrowthChangeofdiameteratbreastheightwereobviousafterthinning.Comparedwiththeoriginalre—giono
8、fL.1eptolepis,Nagano-keninJapan,thegrowthoftreeanddiameteratbreastheighthadnotdifference.AccordingtothemanagementstandardoflongrotationofL
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