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1、文章編號:1000-4025-(2001)0◇-0◇◇◇-0◇湖南省南岳種子植物區(qū)系的研究左家哺1,彭代文1,田偉政1,李明紅2,彭珍寶2,曠建軍2(1湖南環(huán)境生物學(xué)院,湖南衡陽421005；2南岳樹木園,湖南衡陽421100)摘要湖南省南岳種子植物屬的成分主要是泛熱帶、北溫帶和東亞3種分布區(qū)類型,分別占總屬數(shù)的22.6%、18.8%和14.9%,溫帶和熱帶2種性質(zhì)分子比例相當(dāng),分別占47.5%和52.5%；其種的區(qū)系成分主要由華夏、東亞、中國-日本和華東-華中等4種分布式樣構(gòu)成,分別占總種數(shù)的24.47%、16.60%、14.17%和11.65%,若扣除分布范圍較廣的世界廣布、舊世界
2、熱帶、熱帶亞洲至熱帶非洲、熱帶亞洲至熱帶澳洲、熱帶亞洲、南北溫帶(全溫帶)、北溫帶、東亞、中國-喜馬拉雅、中國-日本和華夏等11種式樣,則“華東-華中”及其鄰近分布的式樣共計177種,占剩余總種數(shù)(287種)的61.67%,說明南岳種子植物區(qū)系具有典型的“華東-華中”過渡色彩。數(shù)量分析結(jié)果表明,南岳植物區(qū)系與廬山的關(guān)系十分密切,南岳在區(qū)系歸屬歸于華東植物地區(qū)比較恰當(dāng)。關(guān)鍵詞種子植物；區(qū)系；南岳中圖分類號:Q948文獻(xiàn)標(biāo)識碼: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
