生态环境学报Issue(4)：658-664,7.DOI:10.16258/j.cnki.1674-5906.2015.04.017
氮磷质量浓度对普通小球藻和鱼腥藻生长竞争的影响
Effect of Nitrogen and Phosphorus Mass Concentrations on the Growth and Competition ofChlorella vulgaris andAnabaenasp. strain PCC
摘要
Abstract
Chlorella vulgaris andAnabaenasp are the most common algae in eutrophication ponds. In order to know the growth process of the two species of algae in eutrophication ponds and the relationship between algae growth and concentrations of nitrogen and phosphorus, the experiment was carried out to research the interspecies competition betweenChlorella vulgaris andAnabaenasp at different nitrogen and phosphorus concentrations (N 0.18 µg·mL-1, P 0.025 µg·mL-1; N 0.36 µg·mL-1, P 0.050 µg·mL-1; N 0.72 µg·mL-1, P 0.100 µg·mL-1; N 3.60 µg·mL-1, P 0.500 µg·mL-1) by the methods of special growth rate, growth curve and inhibition parameters through indoors experiment. For the experiment could help clarify how to promote the growth of useful algae and restrain the growth of harmful algae by the way of regulating the environment factors, so the study is very important for regulating aquaculture eco-environment and improving primary productivity of water body. The results indicated that maximum biomass of bothChlorella vulgaris andAnabaenasp increased with the increase of nitrogen and phosphorus concentrations in the uni-culture system, and the maximum biomass ofChlorella vulgaris andAnabaenasp were 198.9×105 and 424.8×105cells·mL-1 respectively. Nitrogen and phosphorus concentrations could influence the competition between Chlorella vulgaris andAnabaenasp significantly. The maximum biomasses ofAnabaenasp in co-culture system were as follows: (TN 0.72 µg·mL-1, TP 0.100 µg·mL-1) group> (TN 0.36 µg·mL-1, TP 0.050 µg·mL-1) group> (TN 3.60 µg·mL-1, TP 0.500 µg·mL-1) group> (TN 0.18 µg·mL-1, TP 0.025 µg·mL-1) group, and maximum biomasses were 208.9×105, 98.3×105, 64.7×105, 45.3×105cells·mL-1 respectively. The results of inhibition parameter of interspecies competition showed that the inhibition parameters ofAnabaenasp againstChlorella vulgaris were 2.599, 0.564, 0.772, 1.618 respectively and that ofChlorella vulgarisagainst Anabaenasp were 0.434, 0.321, 0.466, -8.899 respectively, that is to say, the inhibition parameters ofAnabaenasp againstChlorella vulgaris were all larger than that ofChlorella vulgarisagainst Anabaenasp at the experiment conditions. The inhibition parameter ofAnabaenasp againstChlorella vulgaris reached the peak at the (TN 0.18 µg·mL-1, TP 0.025 µg·mL-1) group, and the maximum was 2.599. The inhibition parameter of Chlorella vulgaris againstAnabaenasp reached the peak at the (TN 0.72 µg·mL-1, TP 0.100 µg·mL-1) group, and the maximum was 0.466.Anabaenaspdominated in the (TN 0.18 µg·mL-1, TP 0.025 µg·mL-1), (TN 0.72 µg·mL-1, TP 0.100 µg·mL-1) and (TN 3.60 µg·mL-1, TP 0.500 µg·mL-1) groups, and Chlorella vulgaris andAnabaenasp could stably coexist in the (TN 0.36 µg·mL-1, TP 0.050 µg·mL-1) group based on the competition model of Lotka-Volterra.关键词
普通小球藻/鱼腥藻/氮/磷/种间竞争Key words
Chlorella vulgaris/Anabaenasp. strain PCC/nitrogen/phosphorus/interspecies competition分类
资源环境引用本文复制引用
孟顺龙,徐跑,王菁,裘丽萍,胡庚东,瞿建宏,范立民,宋超,吴伟,陈家长..氮磷质量浓度对普通小球藻和鱼腥藻生长竞争的影响[J].生态环境学报,2015,(4):658-664,7.基金项目
国家现代农业产业技术体系建设专项（CARS-49）；中央级公益性科研院所基本科研业务费专项 （）
