Sulfur Dioxide, Carbon Dioxide, and Water Vapor Flux Measurements Utilizing a Microprocessor Controlled Data Acquisition System in a Pine Plantation. Rev. 2

摘要

A microprocessor controlled data acquisition system was utilized to determine the flux densities of sulfur dioxide (SO sub 2 ), carbon dioxide (CO sub 2 ), and water (H sub 2 O) vapor above a young lob-lolly pine plantation. The average flux densities for SO sub 2 , CO sub 2 , and H sub 2 O vapor for measurement periods scattered throughout the year, for this stand, were found to be 0.052 gm exp -2 sec exp -1 , 0.72 mgm exp -2 sec exp -1 , and 85 mgm exp -2 sec exp -1 , respectively. The experimental design, system controls, measurement techniques, control logic, and some results obtained are discussed. 11 references, 7 figures, 1 table. (ERA citation 09:029206)