Еcological State of Soils in Irshava and Kamianske United Territorial Communities

Abstract

Soil is the main means of production in agriculture. One of the main dominant factors of transformation and deterioration of soils is human economic activity. The plowing of agricultural lands, depletion of soil cover, industrial pollution, excessive degradation are among them. Reducing the area of agricultural lands directly affects agriculture and leads to lower yields. It can cause an environmental and economic crisis, both in a particular region and in the country as a whole. Therefore, the study of the state of agricultural lands years is paid more and more attention and is an urgent task of researchers in recent.
 The article is devoted to the study of the current ecological condition of soils in Irshava and Kamianske united territorial communities, Zakarpattia region. The assessment was performed on the following indicators: the content of humus, microelements (Zn, Pb), nitrogen, phosphorus, potassium, acidity, nitrates, nitrites. The obtained results showed that exceeding the maximum allowable concentrations in the selected soil samples for any of the elements (Zn, Pb) is not observed. The highest value of the eco-pollutants content was set for the Irshava city, especially for areas close to the road. In addition, it should also be taken into account that the intensive use of lands for agriculture with the introduction of mineral and traditional organic fertilizers in medium doses increases the level of heavy metals in soils. The studied soils have the low content of total lead: from 11.6 to 18.1 mg / kg. This value of Pb concentration in the samples is caused by the relationship between fixed forms of ecopolyutant and humus content. Humus content in studied areas equals 0,75 – 1,45% and corresponds to the low supply of soils with organic matter and the composition of soil-formed rocks.
 The soils of these areas were found to have a medium acid pH of 4,6-5,04 and correspond to a low humus content, obviously due to the high level of the agricultural lands plowing and a decrease in the amount of the organic fertilizers. But in general, the soils of this farm are fit for growing fruit crops.
 Keywords: soil, degradation; soil cover; soil fertility; degradation processes; soil protection; heavy metals; humus; soil quality deterioration; land protection.