Analysis of proton generation and consumption of for- est surface soils in Hokkaido, northern Japan

摘要

We determined proton budgets of surface soils in a deciduous of rest (Df) and a coniferous forest (Cf) of Volcanogenous Regosols in Tomakomai, Hokkaido of northern Japan. The total H~+ souce was 12.9 and 11.6 kmol_cha~-1 y~-1 at Df and Cf respectively, and the external H~+ was 1 /100 at Df and 2 /100 at Cf. The primary H~+ sources were vegetation uptake of base cations and nitrification, while the major H~+ sinks were release of Base cations and NO~- _3 uptake by vegetation.