Effects of simulated acid rain on asian trees

Abstract

We summarized the results obtained from experimental studies on the growth and physiological responses of Japanese and Chinese tree species to simulated acid rain, mist, or fog. Based on the studies conducted in Japan and China, exposure to simulated acid rain, mist, or fog at pH 4.0 or above for one to three growing seasons did not induce any adverse effects on the growth and physiological functions of Japanese and Chinese tree species. Current acidic rain monitored in Japan and China, where the lowest acidity of ambient precipitation was around pH 4.0, was not found to induce any direct significant effects in the tree species examined.