Fang J Y,et al.Change in forest biomass carbon storage in China between 1949 and 1998[J].Science,2001,292:2320-2322.
[2]
Goulden M L,Wofsy S C,Harden J W,et al.Sensitivity of boreal forest carbon balance to soil thaws[J].Science,1991,279:214-216.
[3]
Russell C A,Voroney R P.Carbon dioxide efflux from the floor of a boreal aspen forest,I relationship to environmental variables and estimates of C respired[J].Canadian Journal of Soil Science,1998,301-309.
[4]
Ham J M,Knapp A K.Fluxes of CO2,water vapor,and energy from a prairie ecosystem during the seasonal transition from carbon sink to carbon source[J].Agricultural and Forest Meteorology,1998,89:1-14.
[5]
Houghton L J T,et al.Eds.Climate change 2001:the scientific basis,Cambridge univ.press,Cambridge.2001,185-236.
Markus Kleber.Carbon exchange in humid grassland soils.University Hohenheim (310),D-70593 Stuttgart.1997,ISSN 0942-0754.
[10]
Woodwell G M,et al.The biota and the world carbon budget[J].Science,1978,199:141-146.
[11]
Kuzyakov Y.Separating microbial respiration of exudates from root respiration in non～sterile soils:a comparison of four methods[J].Soil Biology and Biochemistry,2002,34:1621-1631.
[12]
Kleber M.Carbon exchange in humid grassland soils:[D.S.thesis].Stuttgart,Germany:University Hohenheim,1997.
