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… of tons per year,64 causing siltation of water bodies,65 acid mine drainage, and leaching of toxic minerals. This … >0.04 — 0.05 >0.05 Not significant Sahel (150-700mm/year precipitation isohyets) UNCCD | Global Land Outlook | Chapter … ammonium, continuous harvesting of nitrogen fixing crops), acid deposition from fossil fuels and mine drainage. …

… of air purity (article 6-b-l). The occurrence of acid rains has clearly illustrated the close relations that … of the industrialized countries faced with the problem of acid rains, are becoming increasingly concerned about the … a ten-year programme for the assessment of acid precipitation. It is estimated that acid rains cause US$ 5 …

… effect encourages species that can capture the abundant precipitation, leading to prolific epiphytic gardens on the … the highlands to 8°C in the lower areas. The mean annual precipitation follows a gradient ranging from 1,000 mm in the …