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时间:2020-06-03
《冰雪灾害对江西九连山常绿阔叶林的影响.pdf》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、广西植物GuihaiaNov.2013,33(6):780—785http://journa1.gxzw.gxib.cnDOI:10.3969/J.issn.1O00·3142.2013.06.011何俊,赵秀海,孙兆军,等.冰雪灾害对江西九连山常绿阔叶林的影响EJ].广西植物,2013,33(6):780—785HeJ,ZhaoXH,SunZJ,Pt41.Effectsoftheiceandsnowdamagetotheevergreenbroad-leavedforestofJiulianshanMountaininJiangxiProvinc
2、e[J]Guihaia。2013,33(6):780—785冰雪灾害对江西九连山常绿阔叶林的影响何俊,赵秀海,孙兆军,范娟,毛双燕,周华。(1.宁夏大学,银川750021;2.北京林业大学,北京100083;3.江西九连山国家自然保护区管理局,江西龙南341701)摘要:以江西九连山国家自然保护区常绿阔叶林为对象,研究林分不同层次优势种受灾程度,分析物种海拔、坡度对受灾程度的影响。结果表明:乔木上层和中层树木以断稍为主,乔木下层树木以断稍和腰折为主,小树和幼树以压弯为主。在平均受损指数MDI(MeanDamageIndex)方面,乔木上层米槠MDI
3、值最高,拟赤杨最低;乔木中层鸭公树MDI值最高,浙江新木姜子最低;乔木下层米槠MDI值最高,浙江新木姜子最低;小树米槠MDI值最高,细枝柃最低;幼树二列叶柃MDI值最高,狗骨柴最低。海拔对不同林分层次树木的部分受损指标有显著影响(P<0.05);整体上,不同林分层次树木的受损指标在700~760m海拔生境高于640700m海拔生境。不同坡度生境下树木的受损指标均无显著差异(P>O.05)。关键词:九连山常绿阔叶林;冰雪灾害;受损程度;优势种;海拔;坡度中图分类号:Q948文献标识码:A文章编号:1000—3142(2013)06—0780—06Ef
4、fectsoftheiceandsnowdamagetotheevergreenbroad-leavedforestofJiulianshanMountaininJiangxiProvinceHEJun,ZHAOXiu-Hai,SUNZhao—Jun,FANJuan,MAOShuang-Yan,ZHOUHua。(1.NingxiaUniversity,NingxiaYinchuan750021,China;2.BeijingForestryUniversity,Beijing100083,China;3.JiangxiAdministrativeB
5、ureauofJiulianshanMountainNationalNatureReserve,Longnan341701,China)Abstract:Theiceandsnowdamagetotheevergreenbroad-leavedforestofJiulianshanMountainNationalNaturalReserveinJiangxiProvincewasstudied,andeffectsofaltitude,slopeonthedamagedegreewereanalyzed.Theresultswereasfollow
6、s:theupper-layerandmid-layertreesweremostlyinmodeloftopbreakage,theunder-layertreesweresubjectedtotopandtrunkbreakage,thesaplingsandseedlingsweremostlysufferedfrombending.IntermofMDI,seedlings7、differ—entstorywasrespectivelyCastanopsiscarlesiiinupper-layer,Neolitseachuiiinmidqayer,C.carlesiiinunder-layerandsapling,Euryadistichophyllainseedling;however,specieswiththelowestMDIindifferentstorieswerere—spectivelyAlniphyllumfortuneiinupper-layer,Neolitseaauratavar.chekian8、gensisinmid-layerandunder-layer,EuryaloquaianainsaplingandTri
7、differ—entstorywasrespectivelyCastanopsiscarlesiiinupper-layer,Neolitseachuiiinmidqayer,C.carlesiiinunder-layerandsapling,Euryadistichophyllainseedling;however,specieswiththelowestMDIindifferentstorieswerere—spectivelyAlniphyllumfortuneiinupper-layer,Neolitseaauratavar.chekian
8、gensisinmid-layerandunder-layer,EuryaloquaianainsaplingandTri
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