〔1〕龚高法，张王远.吴祥定，张谨蓉。1983.历史时期气候变化研究方法。科学出版社，55
〔2〕Libby，L.M.，Pandolfi，L.J.and Payton，Y .H,Marshall，J.，Becker B.，Ciertz一Sienbenlist，V.，1976,Isotopic tree thermometers.Nature,Vol.261 .284-288.
〔3〕Cray.J and  Thompson.Y.1976，Climatic information  from ¹⁸O/¹⁶O  ration of cellulose in tree rings .Nature，Vol.262.481-482.
〔4〕Stuiver .M.，Burk R .L .and Ouay .P.D.，1984，¹³C/¹²C Ratios intree rings and 'Transfer of  Biospheric carbon to  the Atmosphere.Jour.Geophys .Res,Vol .89 .NoD7.11731-11748.
〔5〕Prancey，R.J .anb Farquhar，G .D.，1982，An  explanation of ¹³C/¹²C variations in tree rims .Nature，Vol，297，28-31.
〔6〕Leavitt，S.W.and Long，A.1986.Trends of ¹³C/¹²C ratios  in Pinyon   tree rings of the American southwest and the global carbon cycle.Radiocarbon，Vol 28.No.2A .376-382.
〔7〕Peng.T.H.，Broecker，W.S.，Freyer，H.D.and Trumboer，S.，1983. A  deconvofution of the tree ring based δ¹³C record.Sour.Geophy.Res.，Vol.88.3609-3620.
〔8〕Keeling.C.D.，Mook，W .G，and  Tans P .P.，1979.Recent trends in the ¹³C/¹²C ratio of atmospheric CO₂.Nature .Vol .277.121-122.
〔9〕Treyer，H .D，1986.Interpretation of the northern hemispheric record  of ¹³C/¹²C trends of  atmospheric CO₂ in  tree rings.The  Changing Carbon C;ycke—A globa1 analysis.edited by J.R.Trabalka  and  D.E. Reichle, PP125-150,  Springer--Verlay.New York.
〔10〕Freycr，H .J .and Belacy，N.，1983，¹³C/¹²C records in northern hemisphere trees during the fast 500  years—Anthropogenic impact and climatic superpositions.Jour.Geophys.Res.，Vol.88.6844-6852.
〔11〕Leavitt S.W.and Long.A.，1988.Stable carbon isotope  chronologies from  trees in the  southwestern United  States.Global  biogeochemicai cycle.Vol2，No .3.189-198.
〔12〕 Friedli，H.，Lotscher,H.，Ocschger，H.，Siegenthaler，U .and Stauf'fer，B.，1986，lce  core record  of the ¹³C/¹²C ratio  of  atmospheric CO₂，in  the past  two  centuries. Nature ,Vol.324. 237-238.