Hydrothermal conditions of the temporal variability of the phytoproductive functioning: case study of the Burtinskaya steppe landscape (Southern Urals)

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dc.contributor.author Khoroshev, A.V.
dc.contributor.author Kalmykova, O.G.
dc.contributor.author Ashikhmin, A.P.
dc.date.accessioned 2022-08-11T06:27:59Z
dc.date.available 2022-08-11T06:27:59Z
dc.date.issued 2022-04
dc.identifier.citation Khoroshev, A.V. Hydrothermal conditions of the temporal variability of the phytoproductive functioning: case study of the Burtinskaya steppe landscape (Southern Urals)/A.V. Khoroshev1, O.G. Kalmykova, A.P. Ashikhmin//Bulletin of the Karaganda University. “Biology. Medicine. Geography” Series.-2022.-№2(106).-p.191-202 ru_RU
dc.identifier.issn 2663-5003
dc.identifier.uri https://rep.ksu.kz//handle/data/13533
dc.description.abstract The interpretation of a geographic landscape as a geosystem requires evidence that, under certain conditions, an external signal has a similar response in its spatial elements. The article examines the similarities and differences in the response of units in the steppe landscape of the Southern Urals (Burtinskaya steppe) to varying hydrothermal conditions. The Normalized Difference Vegetation Index (NDVI) is used as an indicator of intra- seasonal variability in phytoproduction performance. 110 standardized increments of NDVI during the growing seasons in 2010–2020 were ranked and interpreted as types of dynamics in comparison with background modal values. The occurrence and diversity of types of phytomass dynamics within the model units (gullies, ridges, and interfluve flat surfaces) vary depending on hydrothermal conditions and the length of the time interval between measurements. The integrity of the unified response in the landscape is enhanced during dry periods, when changes in phytomass in gullies and on ridges differ little from those on spatially dominant slopes and flat surfaces. Strong deviations from the background dynamics often appear at intervals of up to 2 months, but are compensated for within 4–5 months. The dynamics of hydrothermal conditions over the entire growing season manifests itself in phytomass changes in a similar way over the landscape, which proves the connection between the spatial and temporal parameters of landscape organization. Depending on the landform, phytocenoses adapt to the late summer moisture deficit either by transitioning to another stable state of structure while maintaining the intensity of functioning (self-organization), or by maintaining the structure while reducing the intensity of functioning (self-regulation). ru_RU
dc.language.iso en ru_RU
dc.publisher Karagandy University of the name of acad. E.A. Buketov ru_RU
dc.relation.ispartofseries Biology. Medicine. Geography;№2(106)
dc.subject steppe ru_RU
dc.subject NDVI ru_RU
dc.subject phytomass dynamics ru_RU
dc.subject moisture ru_RU
dc.subject resilience ru_RU
dc.subject landscape unit ru_RU
dc.title Hydrothermal conditions of the temporal variability of the phytoproductive functioning: case study of the Burtinskaya steppe landscape (Southern Urals) ru_RU
dc.type Article ru_RU


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