| 两种不同根系特征沉水植物对沉积物剖面不同形态磷的影响 |
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| 引用本文： | 周楠楠,王赢,高顺峰,王琪,郑雪明,周雅洁,杨文斌.两种不同根系特征沉水植物对沉积物剖面不同形态磷的影响[J].环境科学学报,2021,41(6):2222-2228. |
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| 作者姓名： | 周楠楠 王赢 高顺峰 王琪 郑雪明 周雅洁 杨文斌 |
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| 作者单位： | 1. 安徽师范大学生态与环境学院, 皖江流域退化生态系统的恢复与重建省部共建协同创新中心, 芜湖 241003;2. 中国科学院南京地理与湖泊研究所, 湖泊与环境国家重点实验室, 南京 210008;1. 安徽师范大学生态与环境学院, 皖江流域退化生态系统的恢复与重建省部共建协同创新中心, 芜湖 241003;2. 安徽省农业科学院土壤肥料研究所, 安徽养分循环与资源环境省级实验室, 合肥 230031;3. 安徽师范大学化学与材料科学学院, 分子基材料安徽省重点实验室, 芜湖 241003 |
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| 基金项目： | 国家自然科学基金（No.41403070）；安徽省自然科学基金（No.1708085QD88，2008085QD162）；安徽省高校自然科学研究项目（No.KJ2018A0316，KJ2019A0492）；安徽高校协同创新项目（No.GXXT-2020-075）；养分循环与资源环境安徽省重点实验室开放基金项目；分子基材料安徽省重点实验室开放基金项目（No.fzj19012）；安徽师范大学校立项目（No.2018XJJ55，2018XJJ56，2018XJJ81，2018XJJ94）；安徽省留学人员创新项目择优资助计划；安徽师范大学大学生创新创业训练计划项目（No.201910370077，202010370225） |
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| 摘 要： | 为探究不同根系特征的沉水植物对沉积物中磷（P）的影响，本研究以狐尾藻（Myriophyllum spicatum L.，根系发达）和金鱼藻（Ceratophyllum demersum L.，无固定根）为材料开展室内培养试验.结果显示，狐尾藻和金鱼藻均能显著降低沉积物中的总磷（TP）、无机磷（IP）、氢氧化钠提取磷（NaOH-P）含量，去除率分别为9.0%和7.8%（TP）、9.8%和8.8%（IP）、15.7%和8.7%（NaOH-P）.狐尾藻对沉积物NaOH-P的去除效果显著优于金鱼藻.狐尾藻组中沉积物NaOH-P减少引起IP降低，进而造成TP降低.与初始状态相比，狐尾藻和金鱼藻处理下的上覆水溶解氧（DO）分别增加1.61 mg·L-1和1.72 mg·L-1，但pH和TP没有显著变化.结果表明，两种沉水植物在减少沉积物P、抑制上覆水TP上升方面均具有积极作用，但在沉积物NaOH-P含量高的浅水湖泊中，根系发达的狐尾藻的生态修复功能更为有效.
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| 关 键 词： | 沉水植物 沉积物 磷 巢湖 |
| 收稿时间： | 2020/8/18 0:00:00 |
| 修稿时间： | 2020/10/9 0:00:00 |
Effects of two submerged macrophytes with different root systems on different fractions of phosphorus in sediment profiles |
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| ZHOU Nannan,WANG Ying,GAO Shunfeng,WANG Qi,ZHENG Xueming,ZHOU Yajie,YANG Wenbin.Effects of two submerged macrophytes with different root systems on different fractions of phosphorus in sediment profiles[J].Acta Scientiae Circumstantiae,2021,41(6):2222-2228. |
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| Authors: | ZHOU Nannan WANG Ying GAO Shunfeng WANG Qi ZHENG Xueming ZHOU Yajie YANG Wenbin |
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| Institution: | 1. Center of Cooperative Innovation for Recovery and Reconstruction of Degraded Ecosystem in Wanjiang City Belt, School of Ecology and Environment, Anhui Normal University, Wuhu 241003;2. State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Science, Nanjing 210008;1. Center of Cooperative Innovation for Recovery and Reconstruction of Degraded Ecosystem in Wanjiang City Belt, School of Ecology and Environment, Anhui Normal University, Wuhu 241003;2. Anhui Provincial Key Laboratory of Nutrient Recycling, Resources and Environment, Soil and Fertilizer Research Institute, Anhui Academy of Agricultural Sciences, Hefei 230031;3. Anhui Laboratory of Molecule-Based Materials, School of Chemistry and Materials Science, Anhui Normal University, Wuhu 241003 |
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| Abstract: | To identify the effects of submerged macrophytes with different root systems on the content of phosphorus (P) in sediments, both Myriophyllum spicatum L., which has a developed root system and Ceratophyllum demersum L., which lacks root system, were used to perform an indoor incubation experiment.The results showed that the contents of total P (TP), inorganic P (IP) and NaOH-extractable P (NaOH-P) in sediments were significantly decreased in the presence of Myriophyllum spicatum L.and Ceratophyllum demersum L., with the average removal rates of 9.0% and 7.8% for TP, 9.8% and 8.8% for IP, and 15.7% and 8.7% for NaOH-P, respectively, and Myriophyllum spicatum L.was more effective in reducing NaOH-P in sediments compared with Ceratophyllum demersum L..In the Myriophyllum spicatum L.treatment, the reduction of IP was mainly caused by the reduction of NaOH-P, which thereby drives the reduction of TP.Compared with the initial state, the contents of dissolved oxygen (DO) in the overlying water were significantly increased by 1.61 and 1.72 mg·L-1, respectively, in the Myriophyllum spicatum L.and Ceratophyllum demersum L.treatments, whereas no significant changes were observed for pH and TP.The results suggested that the two submerged macrophytes could decrease the contents of P in sediments and inhibit the rise of TP in the overlying water, but Myriophyllum spicatum L.with a developed root system, may be more effective in the ecological restoration for NaOH-P-rich, shallow lakes. |
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| Keywords: | submerged macrophytes sediment phosphorus Chaohu Lake |
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