Acidification of Red Pine Forest Soil Due to Acidic Deposition in Chunchon, Korea
Source: Water, Air, and Soil Pollution, Volume 130, Numbers 1-4, August 2001 , pp. 1085-1090(6)
Abstract:The effect of acidic deposition on the soil under red pine forest in Chunchon, Korea was investigated. Precipitation, stream water, and soil solution chemistry were monitored at the watershed from 1997 to 1998. Acidity of the open-bulk precipitation was often neutralized by large amounts of ammonia (NH_3) that might have originated from livestock farming and fertilization. Estimated elemental budget at the watershed showed a positive correlation between loss of base cations and proton (H^+) production due to nitrogen transformation in soil (ΔH^+_NT: ([NH_4^+]_in-[NH_4^+]_out)- ([NO_3^−]_in-[NO_3^−]_out)). When ΔH^+_NT increased, concentrations of nitrate in soil solutions also increased. Consequently, pH values of soil solutions decreased, although ion exchange with base cations contributed to buffer reaction. Since acid buffering capacity of the red pine forest soil was small, it was concluded that the input of ammonium nitrogen enhanced nitrification in soil thus causing soil acidification represented by loss of base cations from the watershed.
Document Type: Regular Paper
Affiliations: 1: Graduate School of Bio-Applications and Systems Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo, 184-8588, Japan e-mail: firstname.lastname@example.org 2: Geo Green Tech co., 1-2-3 Haramachida, Machida, Tokyo, 194-0013, Japan 3: Graduate School of Bio-Applications and Systems Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo, 184-8588, Japan 4: Forestry Research Institute of Kangwon-Do, Woodoo-Dong Chunchon, Kangwon-Do, 132, Korea 5: Korea Forestry Research Institute, Chungryangni-Dong, Tondaemun-Ku, Seoul, 130-012, Korea
Publication date: August 1, 2001