Gas exchange of Rhodiola sachalinensis transplanted from different habitats in Changbai Mountain

Introduction1RhodiolasachalinensiSA.Bor,aperennial,medicalherb,mainlydistributesinJapan,Korea,ChinaandRussia.InChina,itmainlydistributesinChangbaiMOuntain,JinnProvince,andZhangguangcaiMountain,HeilongjiangProvince.ThistypicalalpineplantgenerallydistributedinhighMountain,ataltitude1700-25o0m(Wuetsl1987,Qin19941Luetal1995).Rhodiolsplant(RhodiOlaroseschieflyinRussia)hasbeenextensivelystudiedbyscholarsfromRussia,Ukraine,JapanandChinasincethe1950's(Ming1988iKir'yanovetsl1991,OhbaandMid…

Gas exchange of Rhodiola sachalinensis transplanted from different habitats in Changbai Mountain

Rhodiola sachalinensis growing in the different habitats, Xiaotianchi plot (altitude 1 800 m), Tree lineplot (altitude 2 000 m) and Tianwenfeng plot (altitude 2 325 m), of Changbai Mountain (nor-them slop) were transplanted to Harbin Experimental Forest Farm for measuring its characteristic of gas exchange. The study results indicated that the groWth state and gas exchange characteristics of Rh. sachslinensiS growing in different habitatsvaried markedly. The plantS transplanted from Tianwenfeng plot had the highest values in net photosynthesis rate(Pn) and transpiration rate (Tr), those transplanted from Tree line plot shows the second, and those transplantedrom Xiaotianchi plot had the lowest values. The variance existed in transplanted plants was the same as shown inthe field. From the result it can be extrapolated that the difference of Pn and Tr existed in Rh. sschalinensis transplanted from different habitats is depend not only on the environmental fsctors, but on the variance of physiologicalcharacteristic of plant itself.