Ecological Sensitivity of Aquatic Plants

Abstract

Abstract: Throughy the study on the ecological effects of Cd and Zn on several aquatic plants,the ecological sensitivity of 5 species is determined.The results show that according to critical time when plants are injured by Cd and Zn,the order for ecological sensitivity of 5 species is:Nymphoides peltatum>Hydrilla verticillata>;Potamogeton malaianus>Spirodela polyrhiza>Alternanthera philoxeroides The results also show that on basis of catalase activity of aquatic plants,the order for ecological sensitivity of 5 species is: Alternanthera philoxeroides>Spirodela polyrhiza≈Potamogeton malaianus>;Hydrilla verticillata>Nymphoides peltatum. It is evident that the pollution durablty Potamogeton malaianus is higher than for Nymphoides peltatum and Hydrilla verticillata ,pollution sensible species.

Key words: Mt. Shennongjia, altitude gradient, , litter decomposition, mass remaining rate, chemical composition.

CLC Number:

Q948.8

Li Hongwen, Liang Na, Paul K.Chien . Ecological Sensitivity of Aquatic Plants[J]. cje, 2001, (2): 20-22,26.

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Ecological Sensitivity of Aquatic Plants

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