Acidic deposition on leaves of Prunus mume in decline areas of Prunus mume.

Abstract

Acidic deposition on leaves of Prunus mume was investigated in decline areas of Prunus mume around Tanabe City, Wakayama Prefecture. The detected NO₃^- quantity was 45.2 μmol/m² in decline area and 32.9 μmol/ m² in non-decline areas. Additionally, relatively high amounts of deposition was observed on fi ne days. It is suggested that acidic deposition, especially dry deposition, infl uences the quantity on leafs of Prunus mume in decline areas.