云南腾冲上新统植物油丹Alseodaphne hainanensis Merr.表皮微细构造研究
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摘要
研究的樟科植物化石油丹(Alseodaphne hainanensis Merr.)采于云南腾冲上新统芒棒组,它在滇西地区为首次发现。对其进行了大量的实验分析,揭示了其表皮微细构造特征。通过与现生油丹表皮构造和叶结构特征的对比分析,在宏观和微观两方面证实了该化石归属的正确性。现生Alseodaphne hainanensis Merr.分布范围的缩小显示滇西从上新世—现代气候逐渐变冷,上新世的气候比现在温暖。化石Alseodaphne hainanensis Merr.地理分布区的扩大和地质时代的延伸,为植物的发展演化和推论古气候提供了宝贵材料。
Alseodaphne hainanensis Merr. of Lauraceae in this study was collected from the Pliocene Mangbang Formation in Tengchong, Yunnan Province. It is found for the first time in this region. The epidermal microstructural characteristics of this species are investigated based upon extensive laboratory analysis. A detailed comparison of the cuticle and leaf architecture between the fossil and its living equivalent shows that our fossil material belongs to Alseodaphne hainanensis Merr. based on the morphology and epidermis. The reduction of distribution area of Alseodaphne hainanensis Merr. indicates that the temperature gradually decreased from Pliocene to present and the Pliocene climate was warmer than pre-(sent-day in the area of Western Yunnan. The enlargement of geographical distribution and the extension of geological age of fossil Alseodaphne hainanensis Merr. provide precious materials for the deduction of the development and evolution of plants and palaeoclimate conditions.
Alseodaphne hainanensis Merr. of Lauraceae in this study was collected from the Pliocene Mangbang Formation in Tengchong, Yunnan Province. It is found for the first time in this region. The epidermal microstructural characteristics of this species are investigated based upon extensive laboratory analysis. A detailed comparison of the cuticle and leaf architecture between the fossil and its living equivalent shows that our fossil material belongs to Alseodaphne hainanensis Merr. based on the morphology and epidermis. The reduction of distribution area of Alseodaphne hainanensis Merr. indicates that the temperature gradually decreased from Pliocene to present and the Pliocene climate was warmer than pre-(sent-day in the area of Western Yunnan. The enlargement of geographical distribution and the extension of geological age of fossil Alseodaphne hainanensis Merr. provide precious materials for the deduction of the development and evolution of plants and palaeoclimate conditions.
引文
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WOODWARDFI,1987.StomatalnumbersaresensitivetoincreasesinCO2frompreindustriallevels.Nature,327:617—618
戈宏儒,李代芸,1999.云南西部新生代含煤盆地及聚煤规律.云南科技出版社.24
刘裕生,1990.广西百色盆地更新世樟科两种植物角质层研究.植物学报,32(10):805—808
孙柏年,丛培允,阎德飞,解三平,2003a.云南腾冲晚第三纪两种被子植物化石的角质层构造及其古环境意义.古生物学报,42(2):216—221
孙柏年,解三平,阎德飞,丛培允,2003b.UlmusharutoriensisOishietHuzioka角质层特征及古环境意义.兰州大学学报(自然科学版),39(1):80—85L
孙柏年,阎德飞,解三平,丛培允,辛存林,云飞,2004.兰州盆地古近系杨属叶化石及古气候指示意义.科学通报,49(13):1283—1289
冷琴,1999.被子植物果实和种子化石的获取和研究.微体古生物学报,16(2):207—213
李星学,周志炎,蔡重阳等,1995.中国地质时期植物群.广东科技出版社.402
李浩敏,2003.安徽五河下白垩统被子植物叶化石.科学通报,48(4):375—378
贺新强,林月惠,林金星等,1998.气孔密度与近一个世纪大气CO2浓度变化的相关性研究.科学通报,43(8):860—862
BEERLINGDJ,MCELWAINJC,OSBORNECP,1998.Stomatalresponsesofthe“livingfossil”GinkgobilobaL.tochangesinatmosphericCO2concentrations.JExpBot,49:1603—1607
CHENLiqun,LIChengsen,CHALONERWG,etal.,2001.Asses-singthepotentialforthestomatalcharactersofextantandfos-silsGinkgoleavestosignalatmosphericCO2change.Am.J.Bot.,88:1309—1315
DILCHERDL,1974.ApproachestotheIdentificationofAngio-spermLeafRemains.Bot.Rev.,40:1—157
DILCHERDL,MEIMeitang,DUMeili,1997.AnewwingedseedfromthePermianofChina.ReviewofPalaeobotanyandPaly-nology,98:247—256
EditorialBoardforFloraofChina,1982.FloraofChina(Vol.31).SciencePress.72
GEHongru,LIDaiyun,1999.Cenozoiccoal-bearingbasinsandcoal-formingregularityinWestYunnan.YunnanScienceandTech-nologyPress.24
HEXinqiang,LINYuehui,LINJinxingetal.,1998.Relationshipbe-tweenstomataldensityandthechangesofatmosphericCO2con-centrations.ChineseScienceBulletin,43(8):860—862
LENGQin,1999.Thecollectionandstudyofdispersedangiosper-mousfruitsandseeds.ActaMicropalaeontologicaSinica,16(2):207—213
LIHaomin,2003.LowerCretaceousangiospermleaffromWuheinAnhui,China.ChineseScienceBulletin,48(4):375—378
LIXingxue,ZHOUZhiyan,CAIChongyangetal.,1995.Fossilflo-rasofChinathroughthegeologicalages.GuangdongScienceandTechnologyPress.402
LIUYusheng,1990.CuticularstudiesontwoPleistocenespeciesofLauraceaeinBaiseBasin,Guangxi.ActaBotanicaSinica,32(10):805—808
SUNBainian,CONGPeiyun,YANDefei,XIESanping,2003a.Cuti-cularstructureoftwoangiospermfossilsinNeogenefromTeng-chong,YunnanProvinceanditspalaeoenvironmentalsignifi-cance.ActaPalaeontologicaSinica,42(2):216—221
SUNBainian,DILCHERDL,BEERLINGDJetal.,2003.Varia-tioninGinkgobilobaL.leafcharactersacrossaclimaticgradi-entinChina.Proc.Nat.Acad.Sci.,100(12):7141—7146
SUNBainian,XIESanping,YANDefei,CONGPeiyun,2003b.Cuti-cularstructureofUlmusharutoriensisOishietHuziokaanditspalaeoenvironmentsignificance.JournalofLanzhouUniversity(NaturalSciences),39(1):80—85
SUNBainian,YANDefei,XIESanping,CONGPeiyun,XINCunlin,YUNFei,2004.PalaeogenefossilPopulusleavesfromLanzhouBasinandtheirpalaeoclimatesignificance.ChineseScienceBul-letin,49(13):1283—1289
WOODWARDFI,1987.StomatalnumbersaresensitivetoincreasesinCO2frompreindustriallevels.Nature,327:617—618
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