Community collocation of four submerged macrophytes on two kinds of sediments in Lake Taihu, China

文献类型： 外文期刊

第一作者： Ye, Chun

作者： Ye, Chun;Yu, Hai-Chan;Xu, Qiu-Jin;Liu, Jie;Ye, Chun;Kong, Hai-Nan;Song, Xiang-Fu;Zou, Guo-Yan

作者机构：

关键词： Submerged macrophytes;Sediment;Community collocation;Succession;Ecological restoration

期刊名称：ECOLOGICAL ENGINEERING （ 影响因子：4.035； 五年影响因子：4.611 ）

ISSN：

年卷期：

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收录情况： SCI

摘要： To explore a method for rapid restoration and artificial regulation of submerged macrophytes in large-scale restoration of eutrophic lakes, the succession and the biodiversity changes of four communities composed of four native, common submerged macrophytes, Hydrilla verticillata, Potamogeton malaianus, Vallisneria spiralis and Najas marina, on two kinds of sediments were investigated. Under low light intensity (reduced by 99%), the plant biomass changed with seasonal changes, plant competition, and environmental stress. The competitive capability for light differed in the four species due to different shoot height and tiller number. After 405 days of transplantation, H. verticillata became dominant in all communities. The biomass of H. verticillata, with strong ability to endure low water light environment, accounted for more than 90% of the total community biomass, and P. malaianus had only weak growth, while V. spiralis and N. marina almost disappeared. Based on livability and biomass of submerged macrophytes on two sediment types, brown clay sediment appeared to be more favorable for the settlement of the plants, while fertile sludge sediment was suitable for vegetative growth. In conclusion, the improvement of habitats and the selection of appropriate plant species are of the greatest importance for ecological restoration of the aquatic ecosystem.

分类号： Q14

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