MODERN ECOLOGICAL CONDITIONS OF THE RIVER VALLEYS IN THE AREAS OF AGRICULTURAL DRAINAGE AMELIORATION
The studies show that the development of drainage amelioration on the Middle-Amur lowland leadis to a signifi cant transformation of the fl oodplain-channel complexes. Depending on the degree of change in the hydrological, morphological and morphometric parameters of four groups fl oodplain-channel complexes is characterized by a specifi c environmental conditions.