期刊
ENVIRONMENTAL POLLUTION
卷 144, 期 3, 页码 976-984出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2006.01.036
关键词
Calamagrostis; heavy metals; mycorrhiza; phytoremediation; Sesleria; Thlaspi
Plant communities on plots with different metal pollution levels were compared in a field study in order to select the most suitable plant species for the direction of secondary succession toward the targeted grassland vegetation. The vegetational succession showed a gradual increase in plant cover and the number of plant species on the less polluted locations. Two predominant grass species Calamagrostis varia and Sesleria caerulea were selected for phytostabilisation, but a severely reduced seed germination capacity obstructed their use in practice. The mycorrhizal succession showed a gradual replacement of non-mycorrhizal with mycorrhizal plant species. Similar levels of arbuscular mycorrhizal colonisation of a particular plant species may be developed within each growing season regardless of the levels of pollution, with the exception of vesicle/intraradical spore formation. The results suggest that lower overall mycorrhizal colonisation levels and increased vesicle/spore formation may be a part of a mycorrhizal strategy at the most polluted locations. (c) 2006 Elsevier Ltd. All rights reserved.
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