富营养水体水生植物-根际微生物净化能力研究

Study of Purification Capacity of Aquatic Plants-Rhizospheric Microorganisms in Eutrophic Water

以酶活性分析作为基本研究手段,选择水生维管束植物空心菜作为试验对象,在不同程度的富营养水体中,利用细菌碱性磷酸酶、脱氢酶、脲酶指示植物根际微生物分解营养物质的能力,确定其在水体碳、氮、磷循环中的作用,确定不同程度富营养水体中,水生维管束植物根际微生物分解营养物质的能力和净化水体的作用大小,同时也为确定富营养水体生态修复用水生植物选取提供参考标准。

With enzymatic activity analysis as a basic research tool,water spinach subjected to aquatic vascular plants is selected as the test subject.In different eutrophic water bodies,the capacities of rhizospheric microorganisms of indicator plants such as bacterial alkaline phosphatase,dehydrogenase and urease for nutrient decomposition are used to idemify their functions in carbon,nitrogen and phosphorus cycles in water.Moreover,the capacities of rhizospheric microorganisms of aquatic vascular plants for nutrient decomposition and their roles in water purification are also identified in the water bodies with different eutrophication levels.Simultaneously,a reference standard for determination of aquatic plants selection for ecological restoration of eutrophication waters is also provided.