野外における土壌呼吸の測定 : 密閉吸収法の検討 : IV.スポンジを利用した密閉吸収法の開発

概要

論文の詳細を見る
Since the method used in the preceding report, which requires a series of simultaneous measurements with containers of several different sizes, is hardly applicable to field conditions, it is proposed to use a disc of plastic sponge soaked with KOH solution as the CO_2-absorber. In the established resistance formula, (1/υ_i)=(a_1/S)+(a_2/s), the CO_2-absorption rate by KOH solution (υ_i) is expected to be nearly proportional to S (covered ground area) or υ_i & R.S (R : real soil respiration rate), if s (absorbing surface of KOH solution) is equal to S. Using the sponge disc may satisfy this condition or s may be even greater than S. The results of the experiments show that υ_i obtained with this new apparatus is close to R.S, viz. the real soil respiration rate can be obtained directly by a single measurement. The details of this method are described and its reliability tested by other observations.
日本生態学会の論文
1971-09-30