Open AccessAnisotropicity of PH indicator in initial rendzinas soils between the ecotope European Black Pine (Pinus Nigra)
Author(s) -
Roman Semashchuk
Publication year - 2017
Publication title -
vìsnik lʹvìvsʹkogo unìversitetu. serìâ geografìčna
Language(s) - English
Resource type - Journals
eISSN - 2415-7201
pISSN - 2078-6441
DOI - 10.30970/vgg.2017.51.8889
Subject(s) - soil water , soil crust , soil science , geology , soil cover , environmental science , earth science , ecology , biology
The article deals with the issue of the relationship between woody plant formations and soils in the process of soil formation on dense carbonate rocks. A review of the literature was made and the problems of carrying out such researches and establishment of interconnections between plants and soils were revealed. In particular, contradictions in the views on the spatial organization of soil cover under the forest, the allocation of an elementary unit of soil and vegetation cover, the influence of the soil-memory factor and the methods of conducting relevant research. The basis of the study is the concept of tessera, which was proposed by H. Jenny, who considered it as an element of the mosaic in which the soil and vegetation components are interrelated. Studies have shown that there is a close relationship between tree vegetation and soil, which manifests itself in the anisotropy of the pH index both in the horizontal and in the vertical directions. It was found that the tensile strength zones are most affected. The closer to the barrel, the greater the influence of this influence penetrates. In general, the soil zones located below the tree crown have a slightly lower pH value than the weathering crust located outside. On the basis of the conducted researches, the homogeneity of the parent breed within the territory of the research, the mosaic structure of the cover of the initial rendzinas soils, which are clearly bound to a certain phytocoenosis and develop exclusively under its influence, concluded that the use of the notion of tessera as an elementary unit of soil and vegetation cover is appropriateness. Such conclusions confirm the previous studies conducted by N. Lukina (2010), as well as the statement of L. Karpachevsky (1993) on the regular change of soil properties within the limits of the tellers from the center to the periphery, and E. Dmitrieva (1999) on reduction intensity of influence with depth. Key words: initial rendzinas soils, black pine, ecotope, pH.