[Deposition and effects from acidifying compounds, sulphur and nitrogen in the southern and central parts of Sweden October 1995 - September 1996]

acid deposition agua del suelo air pollution arable soils arbre forestier azote azufre carga contaminante charge polluante data collection eau du sol environmental impact assessment forest land forest trees monitoring nitrogen ph pollutant load soil water sol arable soufre suecia suelos cultivables sulphur sweden terrain forestier tierras forestales vigilancia