Nitrogen pollution is rising globally, having doubled since pre-industrial times due to increased synthetic fertilizer use, fossil fuel combustion, and livestock waste, with projections suggesting a fourfold increase by 2100. This excess reactive nitrogen causes eutrophication in water, air pollution (smog/acid rain), biodiversity loss, and significant greenhouse gas emissions, threatening ecosystems and human health.
Nitrogen pollution is rising globally, having doubled since pre-industrial times due to increased synthetic fertilizer use, fossil fuel combustion, and livestock waste, with projections suggesting a fourfold increase by 2100. This excess reactive nitrogen causes eutrophication in water, air pollution (smog/acid rain), biodiversity loss, and significant greenhouse gas emissions, threatening ecosystems and human health. Key Drivers of Rising Nitrogen Pollution Agricultural Intensity : - Increased use of nitrogen-based fertilizers, with a 65 kg N/ha/year average in 2022, drives major runoff into water bodies. Fossil Fuel Combustion: - Emissions of nitrogen oxides (NOx) from transport, power generation, and industry are contributing to rising atmospheric nitrogen. Waste and Management: - Poor management of livestock waste, manure, and sewage releases high levels of ammonia. Environmental and Health Impacts Water Contamination: - Excessive nitrogen causes toxic algal blooms and o...