Operation of selected geoecosystems of Poland in the light of monitoring measurements in the hydrological year 1999

The measurement of the Integrated Monitoring of Environment in the hydrological year 1999 have been realising in programmes: meteorology, air pollution, chemism of rainfall, throughfall and stemflow, chemism of ground water, soil waters, surface waters, soils, invertebrate fauna, flora and vegetation. The states of the environment of representative catchments and trends of changes have been presented.