资源描述：
《湖南省南岳种子植物区系的研究》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、文章编号:1000-4025-(2001)0◇-0◇◇◇-0◇湖南省南岳种子植物区系的研究左家哺1,彭代文1,田伟政1,李明红2,彭珍宝2,旷建军2(1湖南环境生物学院,湖南衡阳421005；2南岳树木园,湖南衡阳421100)摘要湖南省南岳种子植物属的成分主要是泛热带、北温带和东亚3种分布区类型,分别占总属数的22.6%、18.8%和14.9%,温带和热带2种性质分子比例相当,分别占47.5%和52.5%；其种的区系成分主要由华夏、东亚、中国-日本和华东-华中等4种分布式样构成,分别占总种数的24.47%、16.60%、14.17%和11.65%,若扣除分布范围较广的世界广布、旧世界
2、热带、热带亚洲至热带非洲、热带亚洲至热带澳洲、热带亚洲、南北温带(全温带)、北温带、东亚、中国-喜马拉雅、中国-日本和华夏等11种式样,则“华东-华中”及其邻近分布的式样共计177种,占剩余总种数(287种)的61.67%,说明南岳种子植物区系具有典型的“华东-华中”过渡色彩。数量分析结果表明,南岳植物区系与庐山的关系十分密切,南岳在区系归属归于华东植物地区比较恰当。关键词种子植物；区系；南岳中图分类号:Q948文献标识码:ASTUDYONSEEDPLANTFLORAINNANYUE,HUNANPROVINCEZUOJiafu1,PENGDaiwen1,TIANWeizheng1,LI
3、Minghong2,PENGZhenbao2,KUANGJianjun2(1HunanEnvironment&BiologicalPolytechnic,Hengyang421005Hunan;2NanyueArboretum,Hengyang421100Hunan)AbstractTheNanyue,HengshanMountain,issituatedinthecentralpartofHunanProvince.Itsgeographicallocationislongitude112°34′Eto112°44′Eandlatitude27°10′Nto27°20′N,cover
4、inganareaof8200hm2.ItisthemainpeakoftheZhurongPeakwithaheightof1289.8mabovesealevelandarelativealtitudeof1209.8m.Itsgeomorphyismiddlemountainoustype,withdistinctverticalsoilzones,accordingtobio-climaticconditions,theydistributethemountainredearth,themountainyellowearth,themountainyellow-brownyea
5、rthandmeadowsoilfromthefoottothetopoftheNanyue.Itbelongstomiddle-subtropicalmonsoonzone,withmeanannualteperatureof14.8℃,accumulatetemperatureofdailytemperature≥10℃of4500～5000℃,extremelowesttemperatureof-15.3℃andextremehighesttemperatureof32.4℃innormalyear.Meanannualprecipitationis1640.8mm.Meanan
6、nualrelativehumidityis80%.Thevegetationtypesareveryvarietyandincludeseventypesi.e.Subtropicconiferousforests,Evergreenbroad-leavedforests,Bambooforests,Evergreenanddeciduousbroad-leavedmixedforests,Evergreenbroad-leavedshrubland,Deciduousbroad-leavedshrubandandMountaintopmeadow.Theareal-typesong
7、eneraoftheseedplantinNanyueofHunanProvincearemajorPantropic,NorthTemperateandEasternAsiawhichoccupy22.6%,18.8%and14.9%oftotalgenerarespectively.Theproportionoftropicandtemperatureelementsinthisareaarenearingandoccupy47.5%and
