| XU Wenqi,LI Ruihuan,LIU Sumei,NING Zhiming,JIANG Zengjie. 2017. The phosphorus cycle in the Sanggou Bay. Acta Oceanologica Sinica, 36(1):90－100 |
| The phosphorus cycle in the Sanggou Bay |
| 桑沟湾磷循环 |
| Received:November 22, 2015 Revised:May 18, 2016 |
| DOI：10.1007/s13131-017-0997-z |
| Key words:phosphorus cycle aquaculture Sanggou Bay |
| 中文关键词: 磷循环 养殖 桑沟湾 |
| 基金项目:The National Basic Research Program of China (973 Program) under contract No. 2011CB409802; the National Natural Science Foundation of China under contract No. 41521064; the Taishan Scholars Program of Shandong Province of China; the Aoshan Talents Program Supported by Qingdao National Laboratory for Marine Science and Technology under contract No. 2015ASTP-OS08. |
| Author Name | Affiliation | E-mail | | XU Wenqi | Key Laboratory of Ministry of Education for Marine Chemistry Theory and Technology, Ocean University of China/Qingdao Collaborative Innovation Center of Marine Science and Technology, Qingdao 266100, China
Laboratory of Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266100, China | | | LI Ruihuan | Key Laboratory of Ministry of Education for Marine Chemistry Theory and Technology, Ocean University of China/Qingdao Collaborative Innovation Center of Marine Science and Technology, Qingdao 266100, China
Laboratory of Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266100, China | | | LIU Sumei | Key Laboratory of Ministry of Education for Marine Chemistry Theory and Technology, Ocean University of China/Qingdao Collaborative Innovation Center of Marine Science and Technology, Qingdao 266100, China
Laboratory of Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266100, China | sumeiliu@ouc.edu.cn | | NING Zhiming | Key Laboratory of Ministry of Education for Marine Chemistry Theory and Technology, Ocean University of China/Qingdao Collaborative Innovation Center of Marine Science and Technology, Qingdao 266100, China
Laboratory of Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266100, China | | | JIANG Zengjie | Department of Mariculture Ecology and Carrying Capacity Laboratory, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266100, China | |
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| Abstract: |
| The phosphorus cycle is studied during 2013-2014 in the Sanggou Bay (SGB), which is a typical aquaculture area in northern China. The forms of measured phosphorus include dissolved inorganic phosphorus (DIP), dissolved organic phosphorus (DOP), particulate inorganic phosphorus (PIP), and particulate organic phosphorus (POP). DIP and PIP are the major forms of total dissolved phosphorus (TDP) and total particulate phosphorus (TPP), representing 51%-75% and 53%-80%, respectively. The concentrations and distributions of phosphorus forms vary among seasons relative to aquaculture cycles, fluvial input, and hydrodynamic conditions. In autumn the concentration of DIP is significantly higher than in other seasons (P<0.01), and higher concentrations are found in the west of the bay. In winter and spring the phosphorus concentrations are higher in the east of the bay than in the west. In summer, the distributions of phosphorus forms are uniform. A preliminary phosphorus budget is developed, and shows that SGB is a net sink of phosphorus. A total of 1.80×107 mol/a phosphorus is transported into the bay. The Yellow Sea is the major source of net input of phosphorus (61%), followed by submarine groundwater discharge (SGD) (27%), river input (11%), and atmospheric deposition (1%). The main phosphorus sink is the harvest of seaweeds (Saccharina japonica and Gracilaria lemaneiformis), bivalves (Chlamys farreri), and oysters (Crassostrea gigas), accounting for a total of 1.12×107 mol/a. Burial of phosphorus in sediment is another important sink, accounting for 7.00×106 mol/a. Biodeposition by bivalves is the major source of phosphorus in sediment, accounting for 54% of the total. |
| 中文摘要: |
| 2013-2014年开展多个航次对中国北方典型的养殖海湾——桑沟湾进行磷循环研究。主要测定了溶解无机磷、溶解有机磷、颗粒无机磷和颗粒有机磷四种磷的形态。溶解无机磷和颗粒无机磷是溶解态磷和颗粒态磷的主要存在形式，分别占溶解态磷和颗粒态磷的51%-75%和53%-80%。受养殖模式、河流输入和水动力条件的影响，桑沟湾磷的浓度和分布在不同季节有所差异。在秋季，磷的浓度高于其它季节，并且高值区在湾的西部。在冬季和春季，桑沟湾东部磷酸盐的浓度高于西部。在夏季，磷在全湾的分布比较平均。本文建立了桑沟湾磷收支的模型。结果显示，桑沟湾是磷的汇，每年约有1.80×107 mol磷输入桑沟湾。其中，黄海是桑沟湾磷的主要来源，占总输入量的61%，其次为海底地下水(27%)、河流输入(11%)和大气沉降输入(1%)等。大型海藻、扇贝和牡蛎等养殖生物的收获是桑沟湾最主要的磷汇，每年从桑沟湾移除约1.12×107 mol。沉积物的埋藏作用也是桑沟湾重要的磷汇，每年的埋藏量约为7.00×106 mol。在桑沟湾，贝类的生物沉积是沉积物中磷的主要来源，约占54%。 |
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