| 海马齿浮床对富营养化海湾营养盐削减的模型评价：以东山湾八尺门养殖海域为例 |
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| 引用本文： | 刘学海,蒲新明,罗东莲,芦静,刘自力.海马齿浮床对富营养化海湾营养盐削减的模型评价：以东山湾八尺门养殖海域为例[J].海洋学报(英文版),2019,38(12):91-100. |
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| 作者姓名： | 刘学海 蒲新明 罗东莲 芦静 刘自力 |
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| 作者单位： | 自然资源部第一海洋研究所;青岛海洋科学与技术试点国家实验室 区域海洋与数值模拟功能实验室;自然资源部海洋环境科学与数值模拟重点实验室,自然资源部第一海洋研究所;青岛海洋科学与技术试点国家实验室 海洋生态与环境科学功能实验室;自然资源部海洋生态环境与工程重点实验室,福建省水产研究所,自然资源部第一海洋研究所;青岛海洋科学与技术试点国家实验室 区域海洋与数值模拟功能实验室;自然资源部海洋环境科学与数值模拟重点实验室,自然资源部第一海洋研究所 |
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| 基金项目： | The Public Science and Technology Research Funds Projects of Ocean under contract Nos 201305043 and 201205009; the National Basic Research Program (973 Program) of China under contract No. 2015CB755904; the National Natural Science Foundation of China under contract No. 41276036. |
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| 摘 要： | Many coastal seas are severely eutrophic and required to reduce nutrient concentrations to meet a certain water quality standard. We proposed a method for nutrient removal by planting Sesuvium portulacastrum at the water surface using the floating beds in the aquaculture area of the Dongshan Bay as an example, which is an important net-cage culture base in China and where dissolved inorganic nitrogen(DIN) and dissolved inorganic phosphate(DIP) reach 0.75 mg/L and 0.097 mg/L, respectively far exceeding China's Grade IV water quality standards.Numerical simulations were taken using the ecological model, field observations and field plantation experimental results to assess the environmental restoration effects of planting S. portulacastrum at some certain spatial scales. Our field experiments suggested that the herbs can absorb 377 g/m~2 nitrogen and 22.9 g/m~2 phosphorus in eight months with an inserting density of ～60 shoot/m~2. The numerical experiments show that the greater the plantation area is, the more nutrient removal. Plantation in ～12% of the study area could lower nutrients to the required Grade II standards, i.e., 0.2 mg/LDIN≤0.3 mg/L and 0.015 mg/LDIP≤0.03 mg/L.Here the phytoremediation method and results provide helpful references for environmental restoration in other eutrophic seas.
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| 关 键 词： | 植物修复 海马齿 生态模型 营养盐削减 |
| 收稿时间： | 2018/12/21 0:00:00 |
Model assessment of nutrient removal via planting Sesuvium portulacastrum in floating beds in eutrophic marine waters: the case of aquaculture areas of Dongshan Bay |
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| Liu Xuehai,Pu Xinming,Luo Donglian,Lu Jing and Liu Zili.Model assessment of nutrient removal via planting Sesuvium portulacastrum in floating beds in eutrophic marine waters: the case of aquaculture areas of Dongshan Bay[J].Acta Oceanologica Sinica,2019,38(12):91-100. |
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| Authors: | Liu Xuehai Pu Xinming Luo Donglian Lu Jing and Liu Zili |
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| Institution: | First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China;Laboratory for Regional Oceanography and Numerical Modeling, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China;Key Laboratory of Marine Science and Numerical Modeling, Ministry of Natural Resources, Qingdao 266061, China;First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China;Laboratory of Marine Ecology and Environmental Science, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China;Key Laboratory of Science and Engineering for the Marine Ecological Environment, Ministry of Natural Resources, Qingdao 266061, China;Fujian Fishery Research Institute, Xiamen 361012, China;First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China |
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| Abstract: | Many coastal seas are severely eutrophic and required to reduce nutrient concentrations to meet a certain water quality standard. We proposed a method for nutrient removal by planting Sesuvium portulacastrum at the water surface using the floating beds in the aquaculture area of the Dongshan Bay as an example, which is an important net-cage culture base in China and where dissolved inorganic nitrogen (DIN) and dissolved inorganic phosphate (DIP) reach 0.75 mg/L and 0.097 mg/L, respectively far exceeding China’s Grade IV water quality standards. Numerical simulations were taken using the ecological model, field observations and field plantation experimental results to assess the environmental restoration effects of planting S. portulacastrum at some certain spatial scales. Our field experiments suggested that the herbs can absorb 377 g/m2 nitrogen and 22.9 g/m2 phosphorus in eight months with an inserting density of ~60 shoot/m2. The numerical experiments show that the greater the plantation area is, the more nutrient removal. Plantation in ~12% of the study area could lower nutrients to the required Grade II standards, i.e., 0.2 mg/L < DIN≤0.3 mg/L and 0.015 mg/L < DIP≤0.03 mg/L. Here the phytoremediation method and results provide helpful references for environmental restoration in other eutrophic seas. |
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| Keywords: | phytoremediaton Sesuvium portulacastrum ecological model nutrient removal |
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