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SHINJIRO OHKUBO YOSHIKO KOSUGI SATORU TAKANASHI NAOKO MATSUO MAKOTO TANI ABDUL RAHIM NIK 《Tellus. Series B, Chemical and physical meteorology》2008,60(4):569-582
Ambient CO2 concentration, air temperature and relative humidity were measured intermittently for a 3-year period from the floor to the canopy top of a tropical rainforest in Pasoh, Peninsular Malaysia. Mean diurnal CO2 storage flux ( S c ; μmol m−2 s−1 ) and sensible and latent heat storage fluxes ( Q a and Q w ; W m−2 ) ranged from −12.7 to 3.2 μmol m−2 s−1 , −15 to 27 W m−2 and −10 to 20 W m−2 , respectively. Small differences in diurnal changes were observed in S c and Q a between the driest and wettest periods. Compared with the ranges of mean diurnal CO2 eddy flux (−14.7 to 4.9 μmol m−2 s−1 ), sensible eddy flux (−12 to 169 W m−2 ) and latent eddy flux (0 to 250 W m−2 ), the contribution of CO2 storage flux was especially large. Comparison with summertime data from a temperate Japanese cypress forest suggested a higher contribution of S c in the tropical rainforest, probably mainly due to the difference in nighttime friction velocity at the sites. On the other hand, differences in Q a and Q w were smaller than the difference in S c , probably because of the smaller nighttime sinks/sources of heat and water vapour. 相似文献
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