산성 강우에 의한 수목의 쇠퇴현상 - 음이온을 중심으로 -

Abstract

This study was carried out to analyze pH, Electrical conductivity(EC), cation and anion on rainfall and throughfall raining at industrial area(Onsan and Nongso of Ulsan city), suburban area(Myeongsek-myeon of Jinju city) and rural area(Haman and Changyoung-gun), and to investigate SO2 and NO2 concentration in the air of industrial area and rural area, and to survey degree of decline of Pinus thunbergii growing at each area. The rainfall pH was higher than the throughfall pH at the all surveyed areas. The rainfall pH and throughfall pH was 4.76∼5.15 and 4.64∼4.98, 4.95∼5.30 and 4.87∼5.13, 5.29∼5.76 and 5.12∼5.73 at the industrial area, suburban area and rural area, respectively. The EC of rainfall and throughfall was 13.64∼17.22 and 41.6 0∼103.59, 4.18∼8.65 and 17.02∼23.89, 4.09∼6.65 and 13.75∼21.44 at the industrial area, suburban area and rural area, respectively. Generally EC at the industrial area was higher than those of suburban area and rural area. In the correlation analysis among Degree of decline on Pinus thunbergii and ingredients of rainfall, it showed that there was a negative correlation between Degree of decline and pH. There was a positive correlation between pH and Cl- respectively.