Effects of bombing and regeneration of plant cover in Kõnnu-Suursoo raised bog, North Estonia
作者： E. Karofeld
关键词: Plant cover 、 Geochemistry 、 Geomorphology 、 Sphagnum 、 Geology 、 Impact crater 、 Peat 、 Algae 、 Bog 、 Zygogonium ericetorum 、 Raised bog
摘要: This study reports on the main effects of bombing and subsequent regeneration plant cover in a raised bog (KOnnu-Suursoo) North Estonia. Shell craters (0.6–1.3 m wide 34 ± 12 cm deep; n = 30) have remained virtually unvegetated since peak 1970s ended about 1992. Crater bottoms are often covered with dense layer algae dominated by Zygogonium ericetorum, there only few individuals vascular plants. The slopes deepest wet colonized Sphagnum species typical hollows. Bog water temperature, dissolved oxygen concentration peat decomposition crater higher than layers beneath undisturbed area between craters. Al, Pb, Zn Cu uppermost 25 exceeds that corresponding reference areas 1.5 0.5, 1.7 1.2, 1.8 0.4 25.3 15.9 times, respectively.
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