THE ASSESSMENT OF CAPABILITIES OF A SPATIAL GIS‑REALIZED MODEL OF RATIONAL LAND RESOURCES USE
Journal Title: Вісник Одеського національного університету. Географічні та геологічні науки - Year 2016, Vol 21, Issue 2
Abstract
Purpose. One of the most reasonable mathematical models of rational land use is a logical and mathematical model, which was proposed by H. I. Shvebs. The modern spatial version is realized in the GIS. The purpose of current study is to analyze the possibilities of using this model for assessment and prognosis of water erosion risk of territory, optimal land-use planning and conservation of land resources. Data & Methods. The basis of the spatial GIS implementation of the model of rational use of land resources is a system of mathematical equations of the optimization version of the logical and mathematical H. I. Shvebs model. The modified version of the model allows to consider the spatial variability of water erosion factors. The optimizing of the use of erosion-dangerous land is reduced to the calculations in the following modes: 1) calculations of soil water-erosion losses under appropriate land-use options, 2) assessment of soil resource, 3) definition of scenarios of optimizing of the use of the soil resource (I-st, II-nd or III-d), 4) the appropriate calculation of allowable soil loss at various options for land use in these climatic conditions, 5) comparison of calculated soil loss with appropriate and valid election on the basis that the best option of land use in the studied conditions. GIS and simulation modeling are the research methods of studding of the using specifics of the spatial GIS model of the rational use of land resources. Results. The sequential implementation of the regime calculations and a series of simulation experiments within the test area allowed us to make reasonable conclusions on the existing variant of land use and suggest the most optimal under these conditions. The completed verification of the GIS-realized model of rational use of land resources and the interpretation of the obtained results showed that taking into account the spatial variability and implementation of the model in the environment of modern GIS displays the forecast and assessment of water erosion risk to a qualitatively new level, which allows us to give clear recommendations regarding land use, planning of the territory in accordance with the specific soil, climatic and geomorphological conditions and allocation of land for conservation.
Authors and Affiliations
A. V. Pyatkova
Keywords
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