Effect of Biophysical Factors on Spatio-temporal Variation in Stem Respiration
As one of the key processes, stem respiration play an important role in explaining the variation in forest ecosystem productivity. Measuring stem respiration and understanding its biophysical controlling mechanisms are necessary to develop forest carbon cycling models and improve estimation of forest carbon budgets. The measuring methods, spatio-temporal variation in stem respiration rates were reviewed. The combiantion between in vivo method and mass balance approach would be helpful for exploring the stem respration mechanism. Special discussion was made on the effects of stem temperature and sap flow on stem respiration. The maintenance respiration annual fluxes of various forest ecosystems were also compared. With the statistical analysis, there were significant linear relationships bewteen annual stem respiration and forest age' latitude, and mean anuual temperature and precipitation. Tab 4, Ref 84
stem respirationtemporal and spatial variationstem temperaturesap flowmaintenance respiration
NETL
NSTL
万方数据
维普
