Soil degradation in Volyn region: current state, dynamics, ways of reduction

Abstract


 
 
 Recently, the problem of decrease in soil fertility has become more serious, pos- ing a threat to food safety of the country. The main cause is violation of technologies of rational arable farming, which leads to deterioration of the qualitative condition of soils, their degradation. Therefore, development of protective measures for soils against degradation processes is a relevant problem nowadays, solving which would preserve soils and improve their condition. The article evaluates the current condition of degradation of soils in Volyn Oblast. We determined the main aspect of degradation processes, their scales and territorial distribution. We determined that in the structure of the land fund of the Oblast, 52% is occupied by agricultural land, indicating high level of agrarian cultivation of lands. For the last 15 years, the structure of the land fund of Volyn Oblast had undergone insignificant changes, and the most of the area of the land remains unaltered. The area of agricultural lands has somewhat decreased, whereas the area of forests and forest-covered territory has increased. The area of open lands with no vegetative cover has decreased by 0.15%. Ploughed fields in the southern districts of Volyn Oblast exceed the allowable limits, accounting for over 60%. We analyzed the dynamics of the degradation process of soils in the Oblast. We determined that the degradation of soils was to the greatest degree caused by manifestations of erosion and deflation. Water erosion manifested in the territory of Volodymyr-Volynskyi, Ivanychi, Lokachi, Horohiv, Lutsk and Kivertsi districts. Deflatable soils in the Oblast account for 258.2 thousand ha, most of which are in Kovel, Turiisk, Rozhyshche, Stara Vyzhivka districts. Measures for improving low-productive lands, and also land conservation, are being implemented in the Oblast. However, their scale is insufficient. We propose a complex of measures for protecting soils and preventing their degradation.
 
 

Analysis of the dynamics and precipitation regime in the cross-border region Poland-Belarus- Ukraine (2010-2018)

“…Wong, V.V. Fedoniuk (Barabash, Korzh, Tatarshuk, 2004;Barabash et al, 2009;Tarasyuk & Hanushchak, 2017;Osadchyy, 2012;Martazinova & Shchehlov, 2018;Osuch et al, 2016;Fedoniuk & Kostiv, 2018;Fesyuk et al, 2016;Szwed, 2019;Fedoniuk et al, 2020) and other authors. In particular, a detailed analysis of such changes for the period 1985-2005, as well as a description of the trends observed was made for the period 1996-2013.…”

“…In particular, a detailed analysis of such changes for the period 1985-2005, as well as a description of the trends observed was made for the period 1996-2013. For Ukrainian part of the region, presented in the monograph «Current ecological state and prospects for ecologically safe sustainable development of the Volyn region» (Fesyuk et al, 2016). According to (Fesyuk et al, 2016), since the end of the 80 s and 90 s of the 20 th century, there has been a tendency to increase the amount of precipitation in the region.…”

“…For Ukrainian part of the region, presented in the monograph «Current ecological state and prospects for ecologically safe sustainable development of the Volyn region» (Fesyuk et al, 2016). According to (Fesyuk et al, 2016), since the end of the 80 s and 90 s of the 20 th century, there has been a tendency to increase the amount of precipitation in the region. Certainly, for the period 1986-2005 the average amount of precipitation for the territory of the Volyn region was determined to be within 609 mm (for the previous 10-year period, this amount was 601 mm).…”

“…In autumn, the average monthly amounts decrease to 41-54 mm. According to data (Tarasyuk & Hanushchak, 2017, Fesyuk et al, 2016, during the late 20 th and early 21 st centuries average amounts of precipitation in the region were distributed as follows: the annual amount is 621 mm, the amount of precipitation for the warm period (April-October) is 435 mm, and the amount of precipitation for the cold period (November-March) is 186 mm.…”

Classification of Soil Quality Index in Irrigated Paddy Fields: Study in Jember, East Java, Indonesia

“…The current condition shows much productive soil, but it is of low quality (Terano et al, 2015;Fesyuk et al, 2021), no exception in Indonesia. Most of the soil in Indonesia is of low quality (Lantoi et al, 2016;Supriyadi et al, 2019).…”