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时间:2020-06-19
《海南岛热带针阔叶林交错区群落环境特征.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第5O卷第8期林业科学Vo1.50.No.82014年8月SCIENTIASILVAESINICAEAug.,2014doi:10.11707/j.1001—7488.20140801海南岛热带针一阔叶林交错区群落环境特征张俊艳成克武臧润国丁易(1.中国林业科学研究院森林生态环境与保护研究所国家林业局森林生态环境重点实验室北京100091;2.河北农业大学园林与旅游学院保定071000)摘要:采用样带法,以海南岛霸王岭林区典型的热带针叶林与阔叶林交错区为研究对象,分析不同群落类型环境因子变化特征及研究区域内环境因子的综合特征。结果表明:随着林分经针
2、阔交错区的变化,土壤pH、土壤有机质含量、全氮含量、有效氮含量、有效磷含量和有效钾含量都表现为阔叶林区>针阔交错区>针叶林区,全钾含量、凋落物厚度和群落类型光因子表现为针叶林区>针阔交错区>阔叶林区,土壤含水量、全磷含量和土壤砂砾含量变化不显著;3种群落类型环境因子的相关性分析表明,除土壤含水量和全磷含量与其他环境因子之间无显著相关外,其他因子间都显著相关;3种群落类型环境因子的主成分分析表明,土壤pH、土壤有机质含量、凋落物厚度和光因子对第1轴的贡献最大,全氮含量和有效磷含量对第2轴的贡献最大。关键词:热带针叶林;热带阔叶林;针阔交错区;环境特征
3、;海南岛中图分类号:s718.52文献标识码:A文章编号:1001~7488(2014)08—0001—06EnvironmentalCharacteristicAcrossaTropicalConiferous.BroadleavedForestEcotoneZhangJunyanChengKewuZangRunguoDingYi(1.KeyLaboratoryofForestEcologyandEnvironmentofStateForestryAdministrationInstituteofForestEcology,Environment
4、andProtection,CAFBeifng100091;2.CollegeofLandscapeArchitectureandTourism,AgriculturalUniversityofHebeiBaoding071000)Abstract:Basedon13typicaltropicalconiferous—broadleavedforestecotones,weanalyzedtheenvironmentalcharacteristicsalong/ofecotonesusingbelttransectmethod.Theresults
5、showedthat,asthestandchangedfromconiferousforestzonetobroadleavedforestzoneacrossconiferous—broadleavedforestecotone,soilpH,soilorganiccontent,totalN,availableN,availableP,andavailableKcontentsshowedanorderofbroadleavedforestzone>coniferous—broadleavedforestecotone>coniferousf
6、orestzone.ThetotalK.1itterdepthandlightfactorsshowedanorderofconiferousforestzone>coniferous—broadleavedforestecotone>broadleavedforestzone,totalP.Thesoilwatercontentandsoilgravelcontenthadnosignificantdifferencesoverthedifferentecotones.Inconsiderationofalltheseenvironmentalf
7、actorsstudied,Pearson’ScorrelationanalysisshowedthattheallenvironmentalfactorshadobviouscorrelationswitheachotherexceptforsoilwatercontentandtotalPthathadnoobviouscorrelationswithotherenvironmentalfactors.PrincipalcomponentanalysisshowedthatsoilpH,soilorganiccontent,litterdept
8、h,andlightfactorstookmoreefecttothefirstaxis,whereastotalNand
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