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Пространственно-временная трансформация растительности верхнего плато Приволжской возвышенности (в пределах Пензенской области)

Пространственно-временная трансформация растительности верхнего плато Приволжской возвышенности (в пределах Пензенской области)

Abstract

Analysis of cartographic sources, archival and fund materials, published data on spore-pollen analysis allowed to suggest that the territory of the upper plateau of the Volga Upland with early Holocene had widespread forests in which a significant role was played by Scots pine, large areas were occupied and steppes. The formation of vegetation is influenced both natural (large amplitude of heights, easily permeable breeds of the Paleogene, deep ground water table, the broad dissemination of loess and solifluction Quaternary deposits) and anthropogenic factors (cutting of forests, ploughing up of steppes, overgrazing). After prolonged exposure to intense anthropogenic vegetation has undergone substantial transformation. The coniferous-broad-leaved forest changed sobole broad-leaved forest, secondary small-leaved forests and pine cultures of different ages, watershed meadow steppes almost entirely under cultivation, and surviving fragments, usually as part of reserves are of secondary origin. Currently, forest-steppe vegetation recovery in spontaneous mode is impossible without science-based anthropogenic impact.

На территории Приволжской возвышенности с раннего голоцена широкое распространение имели леса, в которых значимая роль принадлежала сосне обыкновенной, большие площади были заняты и степями. На формирование растительного покрова лесостепи верхнего плато Приволжской возвышенности в пределах Пензенской области оказывают влияние как природные, так и антропогенные факторы. В результате длительной интенсивной хозяйственной деятельности произошла существенная трансформация растительного покрова территории. Смешанные леса сменились порослевыми широколиственными, производными мелколиственными и культурами сосны разного возраста, водораздельные луговые степи практически полностью распаханы, а сохранившиеся их фрагменты, как правило, в составе заповедников, имеют вторичное происхождение. В настоящее время восстановление растительности лесостепи в спонтанном режиме невозможно без научно обоснованного антропогенного воздействия.

Keywords

ВЕРХНЕЕ ПЛАТО ПРИВОЛЖСКОЙ ВОЗВЫШЕННОСТИ, ЛЕСОСТЕПЬ, РАСТИТЕЛЬНЫЙ ПОКРОВ, АНТРОПОГЕННАЯ ТРАНСФОРМАЦИЯ РАСТИТЕЛЬНОСТИ

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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