TY - JOUR

T1 - МНОГОЛЕТНЯЯ ДИНАМИКА ЛАНДШАФТОВ СЕВЕРО-ЗАПАДНОГО ПРИЛАДОЖЬЯ ПО ДАННЫМ СТАЦИОНАРНЫХ НАБЛЮДЕНИЙ

AU - Исаченко, Григорий Анатольевич

N1 - Publisher Copyright: © St. Petersburg University Press. All rights reserved. Copyright: Copyright 2018 Elsevier B.V., All rights reserved.

PY - 2018

Y1 - 2018

N2 - The results of 25 years of observations (1992-2017) on 20 permanent key plots (PKP), founded near Priladozhskaya educational-scientific field station of St. Petersburg University (150 km North of St. Petersburg) are analyzed. The PKP are located in the landscape of North-Western Ladoga Region, in the most typical landscape sites: on the tops and slopes of selga (ridges composed of Archean and lower Proterozoic granitoids and treated by glacier), terraces on lacustrine clays and loam, peat bogs of various types, etc. When locating the PKP, typical plant communities were chosen (pine, spruce, mixed and small-leaved forests, pine woodlands, overgrown meadows) and the most characteristic impacts (forest fires, selective cuttings, windfalls, recent use in agriculture, drainage, and others). The most dynamic landscape in the North-Western Ladoga Region are terraces on lacustrine clay and loam, for a long time used in agriculture. Currently, processes of overgrowing realized at a 7 landscape-dynamic trajectories are taking place. In other landscape sites, changes of a long-term state are initiated mainly by fires and windfall, and subsequent processes of forest regeneration. In addition, the change of tree species in forests can occur when small-leaved trees reach their maximal biological age. The landscape sites of upper slopes of ridges and drained peat bogs with a predominance of pine forests in the absence of catastrophic impacts are the most stable.

AB - The results of 25 years of observations (1992-2017) on 20 permanent key plots (PKP), founded near Priladozhskaya educational-scientific field station of St. Petersburg University (150 km North of St. Petersburg) are analyzed. The PKP are located in the landscape of North-Western Ladoga Region, in the most typical landscape sites: on the tops and slopes of selga (ridges composed of Archean and lower Proterozoic granitoids and treated by glacier), terraces on lacustrine clays and loam, peat bogs of various types, etc. When locating the PKP, typical plant communities were chosen (pine, spruce, mixed and small-leaved forests, pine woodlands, overgrown meadows) and the most characteristic impacts (forest fires, selective cuttings, windfalls, recent use in agriculture, drainage, and others). The most dynamic landscape in the North-Western Ladoga Region are terraces on lacustrine clay and loam, for a long time used in agriculture. Currently, processes of overgrowing realized at a 7 landscape-dynamic trajectories are taking place. In other landscape sites, changes of a long-term state are initiated mainly by fires and windfall, and subsequent processes of forest regeneration. In addition, the change of tree species in forests can occur when small-leaved trees reach their maximal biological age. The landscape sites of upper slopes of ridges and drained peat bogs with a predominance of pine forests in the absence of catastrophic impacts are the most stable.

KW - многолетняя динамика, ландшафт, Приладожье, южная тайга, ланд- шафтно-динамическая траектория, постоянная пробная площадь, сукцессия, лесовос- становление, воздействие

UR - http://www.scopus.com/inward/record.url?scp=85054149462&partnerID=8YFLogxK

U2 - 10.21638/11701/spbu07.2018.101

DO - 10.21638/11701/spbu07.2018.101

M3 - Обзорная статья

AN - SCOPUS:85054149462

VL - 63

SP - 3

EP - 21

JO - Вестник Санкт-Петербургского университета. Науки о Земле

JF - Вестник Санкт-Петербургского университета. Науки о Земле

SN - 1812-9323

IS - 1

ER -