Využitie techník faktorovej analýzy pri modelovaní agroekosystémov

Use of Factor Analysis Techniques in Agroecosystem Modeling

Zdena Krnáčová

In: Geografické informácie (Geographical Information), Ročník (Volume) 27, Číslo (Issue) 1, 2023, p. 4-21, ISSN 1337-9453

DOI: 10.17846/GI.2023.27.1.4-21

Abstract

Modeling has recently been increasingly used to evaluate these complex agroecosystems. From the point of view of the applied methodological approach, we look at the agroecosystem (traditionally a geocomponent understood as a summary of a geological, hydrological, soil-substrate layer in a space with a certain use) as a system of diagnostic properties of geocomponents and their relations. The use of models creates the opportunity to study the original indirectly, it is its idealized reproduction, which is simpler, clearer and more accessible and with which it is easier, safer and more efficient to work. Factor analysis technique allows the study of complex systems for a better understanding of their functionality (Gardner et al., 1991). Projections of the extracted factors for individual selection elements (example ABC, KEC, VSEU) determines the F0 factor score. The row vectors in this matrix represent the distribution of individual factors for a specific implementation of the selection (spatial distribution). We usually rescale the obtained factor score values into x-categories so that we can project them into homogeneous units (ABC, KEC, VSEU). Based on the quantification of ecological criteria for each homogeneous unit, we were able to propose a sustainable management of the agroecosystem.

Keywords: agroecosystem, factor analysis, mathematic modeling, interaction in the model, sustainable indicators, factor score values

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