No abstract

The most ordinary form of impact on soils is erosion. A very rapid increase of the surfaces affected by erosion is conditioned, in particular, by the non-compliance of environmental requirements concerning exploitation of agricultural land and by the actual inefficient management of land resources. Lately due to the intensive exploitation of land and natural resources, the ecological situation worsened considerably, which has a negative impact over soils from the Central Development Region. Due to of the impact of agricultural activities and pressures of various factors on soil quality to grown the surface of soils eroded. Some factors led to growth the eroded surfaces which are considered high percentage of technical and hoeing crops.

With a total area of approximately 14,770 km2, which makes up 43.6% of the country's surface, DPBS DRB is characterized by modest water resources. Total surface water resources make up about 3.39 km3 / year (25.32% of the Republic of Moldova's water resources). In the multiannual leakage of both Prut and internal rivers from Prut - Nistru, several cycles with different leakage rates are recorded, a phenomenon probably influenced by the cyclicality of solar activity.

The methodology for identifying and delimiting nutrient sensitive areas establishes the approaches and criteria for the designation of nutrient sensitive areas according to the Water Law no. 272 of 23.12.2011, partially harmonized with the Council Directive no. 91/271 / EEC of 21 May 1991 on the treatment of urban wastewater. Urban wastewater entering the collection systems, before being discharged into sensitive areas, is subject to a more rigorous treatment for all discharges coming from agglomerations with a population of more than 10,000 equivalent inhabitants.

The evacuation of the insufficiently treated and nutrient-rich wastewater risks triggering the eutrophication of the receiving water bodies, which would lead to an undesirable disturbance of the balance of the organisms present in the water and to a degradation of the water quality. Nutrient-sensitive areas in the Northern Development Region were identified and delimited. They include sections of rivers in which wastewater is discharged from agglomerations in the region with a population bigger than 10,000 l.e. The modernization of the stations and the increase of the treatment plant would be the way to improve the situation.