Analyzing Vegetation–Soil–Topography Relationships of Landscapes: A Multiscale Geosystem Approach and Its Application

Khoroshev, A.V.

Автор: Khoroshev A.V.
Сборник: Current Trends in Landscape Research. Innovations in Landscape Research. Mueller L., Eulenstein F. (eds)
Серия: Innovations in Landscape Research
Год издания: 2019
Место издания: Springer Cham
Первая страница: 233
Последняя страница: 251
DOI: 10.1007/978-3-030-30069-2_9
Аннотация: Most landscape-ecological models deal with either between-component relationships at a single hierarchical level or with hierarchy of a single geocomponent, often ignoring variety of types of between-component relationships and density of linkages in space. We developed the multiscale geosystem approach to clarify the relations between landscape attributes, governing ecological processes, and relevant scale levels of processes description. We treat landscape as a multipattern geosystem that is composed by superposition of spatial relationships formed at several scale levels and reflecting various contemporary ecological processes as well as legacy of former processes and geographical phenomena. We propose the procedure that allows comparison of a series of hypotheses about the appropriate spatial extent of the higher-order system, i.e., the extent to which the focal system responds to constraint. Constraints from the higher-order system are interpreted as an emergent effect evolving as a result of interactions between neighboring spatial units. The properties of a landscape unit are treated as a product of both intra-level interactions between geocomponents and inter-level relations with a set of surrounding units. The proposed statistical procedure is aimed at splitting spatial variance of geocomponents’ (soils and vegetation) properties to effects of inter-level and intra-level interactions. Non-metric multidimensional scaling was applied to reduce dimensionality of raw field data collected in Republic of Udmurtia (mixed-forests zone) and to range ecological factors affecting vegetation and soil properties. Response surface regression models were applied to relate properties of soils and vegetation to each other and to a set of relief morphometric properties measured from digital elevation model in a range of square neighborhoods. Comparison of quality of equations built for various neighborhoods allowed establishing the size of holistic higher-order geosystems that impose frame conditions on properties of the focus-level units. We revealed contemporary and former-time processes that shaped patterns of vegetation and soil cover and their characteristic space scale. The proposed approach is scale-invariant and can be applied to study of relations between the focus-level units and the higher-order units at any map resolution.
Добавил в систему: Хорошев Александр Владимирович

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Analyzing Vegetation–Soil–Topography Relationships of Landscapes: A Multiscale Geosystem Approach and Its Applicationстатья Исследовательская статья

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