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1、广州市含土沉香风水林的群落学特征及其保护广东林业科技2011年第27卷第2期l5广州朱报着市含土沉香风水林的群落学特征及其保护张方秋李镇魁王冉,潘文王裕霞(1.广东省林业科学研究院广东广州510520;2.华南农业大学林学院;3.北京林业大学省部共建森林培育与保护教育部重点实验室)摘要在含土沉香的广州市萝岗区风水林(村边次生常绿阔叶林)设样方进行调查,分析其组成和结构特征.在800m样地内有维管植物70种,隶属于39科60属,以热带分布科和属占优势;优势科有茜草科,樟科和大戟科等,群落成层现象明显,可分为乔木层(3个亚层),
2、灌木层和草本层3个层次,层间植物丰富.乔木层第1亚层木荷重要值最大,黄果厚壳桂次之,该群落命名为木荷+黄果厚壳桂+黄杞群落(SchimaSU.perba+Cryptocaryaconcinna+EngelhardtiaroxburghianaCommunity).生活型以中,小高位芽为主,叶型以中,小革质单叶为主;种群频度分布规律为A>B>C>E,属于A级的种类占优势;土沉香(Aquilariasinensis)以小径级为主,只要环境合适,自身具有较强的更新能力;样方内部分植株侧根或树枝遭人为砍伐,树干被砍
3、伤,严重影响植株生长.土沉香是广东省地道药材的"十大广药"之一,建议在广州市有野生土沉香生长的植物群落,设立自然保护小区进行保护.关键词土沉香群落学特征保护珍稀濒危植物中图分类号:$718.542文献标识码:A文章编号:1006～4427(2011)02—0015—07TheCommunityCharacteristicsandConservationofGeomanticForestIncludingAquilariaSinensisinGuangzhouZhuBaozhuZhangFangqiuLiZhenkuiWang
4、Ran?PanWenWangYuxia(1.GuangdongAcademyofForestry,Guangzhou,510520;2.CollegeofForestry,SouthChinaAgriculturalUniversity;3.TheKeyLaboratoryforSilvicultureandConservationofMinistryofEducation,BeijingForestryUniversity)AbstractAninvestigationwasconductedinan800mcommuni
5、typlotofthegeomanticforest(i.e.,ev.ergreenbroad—leavedsecondaryforestaroundvillage)includingAquilariasinensis(Lour.)Gilg.inLuogang,Guangzhou,SouthChina.Atotalof70speciesofvascularplantswerefound,andsubordinatedto39familiesand60genera.Thedominantplantsweretropicalge
6、neraandtropicalfamilies,Accordingtotreeheight,numberandimportancevalue.thisgeomanticforestwasnamedasSchimasuperba+Cryptocaryaconcinna+Engelhardtiarox?burghianacommunity.Itwasverticallydividedintothreelayers:treelayer(including3sub—layers),shrublayerandherblayer.Int
7、erlayerplantspecieswererich.Thelifeformsinthecommunitymainlyincludedmesophanero—phytesandmicrophanerophytes,andthedominantleafformsweremesophyIIandmicrophy1I.Theorderofpopu—lationfrequencydistributionwasA>B>C>E.andclassAplantsaccountedfor65.71%.Themajority
8、ofAqui—lariasinensisinthiscommunitywassmallindiameterclass.A.sinensishasbeenregardedasoneofthetop—tenmedicinalmaterialsinGuangdongprovince,butare
