Nitrogen Emissions from Soils

摘要: The oxidized nitrogen species nitric oxide (NO), dioxide (NO2) and nitrous (N2O) play an important role in tropospheric stratospheric chemistry. NO NO2, collectively known as NOx, regulate the photochemical production of ozone abundance hydroxyl radical (OH, main oxidant atmosphere), whereas N2O influences chemistry (Crutzen, 1974). Moreover, is a long-lived greenhouse gas. reduced ammonia (NH3) involved rain cloud water chemistry, aerosol formation, it acidifies ecosystems (e.g. van Breemen et al., 1982) plays crucial sulphur cycle Bouwman 1997). Nitrogen are also relevant for biogeochemical cycling terrestrial nutrients, e.g. by regulating Net Primary Production (NPP) future carbon dioxide-enhanced climate (Holland A large input via wet dry deposition can result forest decline consequence saturation or acidification soil (Bouwman 1997)