Цесь О. А.

Purpose. To give an objective assessment of the current ecological condition of artificially created objects of the nature reserve fund. Methods. Comparative-geographical, generalization, systematization, statistical, comparative-analytical, descriptive, cartographic. Results. Not all types of artificial objects of nature reserve fund of Volyn region are represented. There are 12 park-monuments of landscape art, 1 botanical garden, 1 zoo and no dendrological park. On the whole, the number of artificial objects of nature reserved fund in the region is the lowest in Ukraine. On the territory of the region there is an uneven distribution of artificial objects of the nature reserve fund. An analysis of the distribution of artificial objects of nature reserve fund by area revealed that the largest one is the park-monument of landscape art «Slovianskyy» (27,35 hectares). It is located in the Volodymyr-Volynskyy district. From 12 to 21,6 hectares of landscapes in Lutsk, Gorokhiv, Turiysk, Lyubeshiv and Kivertsy districts is occupied by the park-monuments of landscape art. In the Starovyzhivsky district, the area of park-monuments of landscape art is 2 hectares, while in other districts there are no areas for artificial objects of nature reserve fund. All arti-ficial objects of nature reserve fund were created in 1960-1990. Only one park-monuments of landscape art was created in 2018. It is called «Sydorukiv Park» and is located in the city of Horokhiv. Most of the park-monuments of landscape art are located within settlements and only 2 parks are located in the territo-ry of forestry. In total, more than 150 species of flora are protected in the territory of park-monuments of landscape art. Conclusion. As a result of the analysis, 3 species of flora were identified that grow on the territory of parks of monuments of landscape gardening art and are included in environmental lists (Epipactis hel-leborine, Syringa josikaea, Epipactis palustris). The most dangerous for them is tearing, digging, picking up bouquets, as well as a partial violation of the structure of ecotopes (deforestation, excessive recreation, etc.). It is proposed to strengthen the protection of these species by increasing the status of the nature con-servation object and assigning them to the territories of the nature reserve fund - botanical nature reserve of local importance.

Purpose. Determination of the species composition and determination of the systematic and ecological structure of the aquatic and coastal-aquatic flora of the Vyzhivka River. Methods: morphological, botanical, comparative ecology, statistical. The ecological classification of species was given according to V. Papchenkov. Results. Flora of the Vyzhivka River has 36 species of higher aquatic and coastal-aquatic plants belonging to 31 genus, 20 families, 14 orders, 3 classes (Equisetopsida, Liliopsida and Magnoliopsida) and 2 divisions (Equisetophyta and Magnoliophyta). The Magnoliophyta division includes 35 species, or 97,22% of the total number of species. The species composition is dominated by representatives of the class Liliopsida. Up to 4 families of flora (Alismataceae, Hydrocharitaceae, Cyperaceae, Lemnaceae) own 41,66% of all species. The ecological structure of aquatic and coastal-aquatic plants of Vyzhivka river includes four ecotypes. The first place in terms of the number of species is occupied by hydrophytes, which amount 33,33% of the total number of species, hygrohelophytes are represented by 30,56%. The share of helophytes and hygrophytes, respectively, is 19,44% and 16,67%. Conclusions. As a result of the conducted research, the species composition and features of the ecological structure of the higher aquatic and coastal-aquatic flora of the Vyzhivka River were established. The greatest species diversity is characteristic for the plot number 1 – 24 species. In the second section, 21 species of aquatic and coastal aquatic plants were identified. The smallest number – 18 species, is in the third area. The anthropogenic factors have the greatest impact on biodiversity: the presence of a drainage system, straightening of the riverbed, the use of the river basin for agricultural needs, the discharge of insufficiently treated sewage of housing and communal services.

The deterioration of the ecological status of small river basins, and in this regard, and the quality of water in the rivers of the Pripyat basin is due to large-scale hydrotechnical reclamation, deforestation and increase of areas of cultivated land, recreation, soil erosion, radionuclide contamination of the territories as a result of the Chornobyl catastrophe, industrial development , Pollution by municipal wastewater and more.Purpose.. Study of the ecological state of the Tsyr river, analysis of hydro-chemical, tropho-saprobiological descriptions and content of specific substances of toxic action, determination of class and category of water quality. Methods. Field researches, Analytical methods. Results. The modern approaches for the groups of factors of river pools anthropogenic transformation are considered. The tests of the Tsyr river water are selected and analysed of three blocks of substances: salt composition, tropho-saprobiological block and block of specific substances of toxic action. A class and category of water quality are certained for every block. It is set that on the indexes of hydro-chemical block quality of water in the Tsyr river belongs to the I class and to the I category – excellent water. In the second block of substances the best value has a pH-value in obedience to that water of the river belong to the I class and to I category – excellent water. The worst value has an index of content of phosphates, where the water quality of the river belongs to V of class – very bad and VII category – very dirty. In the third block there are the best indexes quality of water, which belongs to the I class and the 1 category and it is estimated as excellent. The worst indexes belongs to the IV of class – bad and VI category – dirty. Conclusions. The nutrients content and the potassium content determines the state of the small river Cir as very bad, dirty. It is recommended to monitor the dynamics of water quality changes in the river Tsir.