Seasonal and interannual variability of CO2 above the moist tropical forest of southern Vietnamстатья
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Дата последнего поиска статьи во внешних источниках: 4 июня 2021 г.
Аннотация:The paper presents the results of a study of seasonal and interannual variability of CO2concentration above the moist tropical forest in southern Vietnam. Experimental data werecollected during year-long observation of CO2 directly in the forest from 2012 to 2017. All datawere obtained through the use of an air intake tube, placed on a metal tower at a height of 46 mand connected to a Li-Cor 820 gas analyzer (Li-Cor Inc., USA) located in a building at the footof the tower. The values of the concentration were recorded with a resolution of 1 second; forfurther analysis, all data was averaged to 0.5 h values. Statistical processing based on the Fourieranalysis allowed to evaluate the main characteristics of the annual distribution of CO2concentration, such as the amplitude and phase, as well as to analyze their variability over theyears. The results of the study showed a presence of a well-determined annual course of CO2concentration above the canopy of the moist tropical forest.