| 常小云,张树楠,张苗苗,肖博仁,陈均利.绿狐尾藻生态沟渠在低温状态下对磷的去除[J].农业环境科学学报,2021,40(4):852-858. |
| 绿狐尾藻生态沟渠在低温状态下对磷的去除 |
| Phosphorus removal in Myriophyllum aquaticum ditch under low-temperature conditions |
| 投稿时间：2020-10-16 |
| DOI：10.11654/jaes.2020-1196 |
| 中文关键词: 绿狐尾藻 生态沟渠 磷 低温 |
| 英文关键词: Myriophyllum aquaticum vegetated drainage ditch phosphorus low temperature |
| 基金项目:湖南省自然科学青年基金项目（2020JJ5636）；国家自然科学基金青年科学基金项目（41807056） |
| 作者 | 单位 | E-mail | | 常小云 | 长江大学动物科学学院, 湖北 荆州 434000 | | | 张树楠 | 中国科学院亚热带农业生态研究所, 亚热带农业生态过程重点实验室, 长沙农业环境观测研究站, 长沙 410125 | | | 张苗苗 | 中国科学院亚热带农业生态研究所, 亚热带农业生态过程重点实验室, 长沙农业环境观测研究站, 长沙 410125 | | | 肖博仁 | 湖南佳和智农技术咨询有限公司, 长沙 410199 | xiaoboren2008@126.com | | 陈均利 | 中国科学院亚热带农业生态研究所, 亚热带农业生态过程重点实验室, 长沙农业环境观测研究站, 长沙 410125
中国科学院大学, 北京 100049
湖南佳和智农技术咨询有限公司, 长沙 410199 | 1154223483@qq.com |
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| 中文摘要: |
| 为解决冬季生态沟渠磷去除效率低的问题，设置低、中、高水位下3条绿狐尾藻生态沟渠，研究不同水位下绿狐尾藻生态沟渠在低温条件下的总磷（Total phosphorus，TP）去除表现。结果表明：绿狐尾藻生态沟渠在整个冬季均有较高的除磷效果，平均TP去除率为61.9%~73.7%，且在高水位条件下，相对较高的水温和水下空间利于绿狐尾藻的生长，从而促进了TP的去除；而低水位下较高的溶氧（Dissolved oxygen，DO）浓度和根土界面利于基质对TP的吸附。根据磷质量平衡，植物吸收和沉积物吸附分别占进水TP负荷的30.27%~48.75%和18.38%~24.95%。研究表明，绿狐尾藻是一种适合种植于生态沟渠，用于磷去除的耐寒水生植物。 |
| 英文摘要: |
| In order to solve the problem of inefficient phosphorus removal in vegetated ditches during winter, three Myriophyllum aquaticum ditches with low, medium, and high water levels were built to study total phosphorus(TP) removal performance under lowtemperature conditions. The results showed that the M. aquaticum ditches had a high phosphorus removal effect throughout the winter, and the average TP removal rate was 61.9%~73.7%. Under high-water level conditions, relatively high water temperature and underwater space were conducive to the growth of M. aquaticum, thereby promoting the absorption of phosphorus by M. aquaticum, whereas under low-water level conditions, higher dissolved oxygen(DO) concentration and root-soil interface were conducive to adsorption of TP by sediments. According to the phosphorus mass balance, plant and sediment absorption accounted for 30.27%~48.75% and 18.38%~24.95% of the influent TP load, respectively. These results indicate that M. aquaticum is appropriate as a cold-resistant aquatic plant for TP removal in drainage ditches. |
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