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- W3119098606 abstract "Abstract. The main concepts and methods of ecological geomorphometry as a research field aimed at studying relationships between terrain morphometric characteristics and ecological factors and processes are reviewed in the paper. The progress in this research field has been conditioned by the propagation of high-resolution digital elevation models in free access and of methods of their digital analysis, namely: the calculation of derivative quantitative characteristics (attributes and indices) of terrain and the statistical models of analyzing the relationships between the latter and the ecological properties and factors (those relevant for a certain ecological subject). A peculiar feature of ecological approach to regarding terrain (its morphology) is subjectcentrism (that is, regarding it from a point of view of a certain subject). The subject of ecological relationships can be living entities (populations, species, communities) as well as a human, social entities, economy and its branches. Three main concepts of ecological geomorphometry are put forward: terrain attributes (relatively simple quantitative characteristics of terrain form that characterize its geometry and some elementary physical processes); topographic indices (quantitative surrogates for some complex physical or biophysical processes of ecological significance); morphotops (spatial units that are distinguished by terrain morphology, using criteria of ecological homogeneity relevant from a viewpoint of a certain ecological subject). Morphotops can be distinguished with different level of detail (and, as a result, with different characteristic dimensions), relative to the study aim, to the geographic features of the area, and to the available data and the methods of their analysis. While morphotops are distinguished with strictly defined quantitative morphometric parameters (terrain attributes, topographic indices), this enables using formalized methods with their advantages of reproducibility and possibility of automatizing. In our studies aimed at morphotop mapping for a small area in the hilly terrain of Davydiv range near Lviv and for a larger area in the central part of Ukrainian Carpathians, morphotops delineation was based on topographic indices that characterize insolation level (solar radiation incidence on terrain elements of different aspect and slope values), lateral redistribution of water on slopes and redistribution of solid matter by washout on slopes. Morphotops were distinguished with cluster analysis method, which allows to distinguish natural groupings of data in the attribute space. Presetting different number of clusters to be distinguished, morphotopes can be distinguished with different levels of detail, larger number of clusters corresponding to more homogenous morphotops with smaller characteristic sizes. Key words: ecological geomorphology, ecological geomorphometry, morphotops, terrain attributes, topographic indices." @default.
- W3119098606 created "2021-01-18" @default.
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- W3119098606 date "2021-01-13" @default.
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- W3119098606 title "FEATURES OF ECOLOGICAL GEOMORPHOMETRY AS A PROSPECTIVE FIELD OF STUDY, ITS MAIN CONCEPTS AND METHODS" @default.
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- W3119098606 doi "https://doi.org/10.30970/gpc.2020.1.3205" @default.
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