瓜馥木、浙江桂水分生理特征初探-生态学专业论文.docxVIP

摘要洲Y 摘要 洲Y 叭川1 洲8㈣0㈣6洲5 ㈣4● ㈣2 Abstract In order to explore the water physiology Characteristics of woody vine，Fissistigma oldhami and Cinnamomum chekiangense sap flow were investigated in four seasons．And A related environmental factors such as incident solar radiation，air temperature，relmive air } ，土 humidity were recorded continuously in Fujian Jian’OU Wanmulin Nature Reserve，where is a evergreen broad-leaved forest in subtropical regions．The nighttime transpiration, stomatal conductance and water SOurCeS were also be studied． The sap flow rate(SF)of F．oldhamii was alternate in daytime and nighttime，compare 诹tIl C．ehekiangense，SF of只oldhamii started earlier and the value of nighttime is larger．只oldhamii xylem has strong water transport capability．There were marked correlations between SF and the environmental factors each season．During spring and summer，SF started earlier and the peak value is larger than in autumn and winter．In order to adapt the high canopy transportation rate，E oldhamii has a larger night SF．It’S nighttime transportation rate(TR)is obviously smaller than SF．There were not marked correlations between VPD and SF，SO night SF of F oldhamii may used to xylem water storage。 Growing season F．oldhamii mainly utilized shallow-layer soil water． This study preliminary understanding of woody vine F．oldhamii’S water physiological characteristics in natural tropical forest,reveal the mainly．SF characteristics differents of two life form plants，aim to provide practical references for physiology study of woody vines，and do a basic research for exploring the role of woody vines in tropical forests hydrological processes． ^ 』 Keywords：Lianas／woody vine；sap flow；Water physiology；81So；8D；Fissistigma oldhami；Cinnamomum chekiangense；Fujian Jian’OU Wanmulin Nature Reserve III 福建师范大学陈冰冰硕士学位论文 ‘J r IV 、 中文文摘中文文摘 中文文摘 中文文摘 木质藤本生活型特殊，分布广泛，对热带、亚热带森林群落外貌和结构有重要 影响。随着全球气候和大气化学变化，木质藤本丰度增加，其在热带、亚热带森林 中的地位日益重要。但由于木质藤本野外物种鉴定困难等原因，对这一特殊类群的 研究较少。目前木质藤本生理生态研究主要集中在热带地区，