Evaluation of the total maximum allocated load of dissolved inorganic nitrogen using a watershed-coastal ocean coupled model
文献类型：期刊论文
| 作者 | Shi, Zhen1; Chen, Yuren4; Cheng, Weicong4; Zhang, Heng2,3,4; Qiao, Jiawei4; Liu, Jiahuan4; Gong, Wenping3,4 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2019 |
| 卷号 | 673页码:734 |
| 关键词 | Coastal management TMAL Pollution control Daya Bay Couple model Overloaded rate |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2019.04.036 |
| 英文摘要 | Due to the recent rapid increase in human activity and economic development, many coastal areas have recently experienced a high degree of land-based pollution. Evaluating the total maximum allocated load (TMAL) of dissolved inorganic nitrogen (DIN) nutrients and the remaining capacity is of importance for improving water quality. A considerable amount of nutrients derived from the coastal watershed can be found in wet seasons, which is non-negligible for the estimation of remaining capacity. Therefore, we use a watershed-coastal ocean coupled model combined with an optimization algorithm to tackle this issue. In contrast with previous studies, this study provides a method to estimate the spatiotemporal variations in TMALs and we then compare it to the current DIN nutrient load, including both point sources and non-point sources. Our results suggest that the TMAL of Daya Bay (DB), which is located in the northern part of the South China Sea, is about 7976 metric tons per year (tlyr) and ranges from 191 metric tons per month (t/month) to 1072 tlmonth. The increase of non-point source (NPS) DIN input also plays an important role in daily overload events during wet seasons. Moreover, the TMALs show an inverse exponential correlation with the water age, but only about 65% of the variance is explained. This suggests that the variations from the optimization algorithm and from local water function zoning plans are also important. According to our prediction of the DIN input, the TMAL of DB will soon be exhausted in the next several years. Consequently, prompt actions are necessary to consider the distribution of TMALs in urban developments and to decelerate the rapid growth of DIN input. Therefore, the results of this study will be helpful for both local pollution control and future urban planning. (C) 2019 Elsevier B.V. rights reserved. |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/17703]  |
| 专题 | 南海海洋研究所_热带海洋环境国家重点实验室(LTO) |
| 作者单位 | 1.Sun Yat Sen Univ, Guangdong Prov Key Lab Climate Change & Nat Disas, Guangzhou 510275, Guangdong, Peoples R China 2.Southern Lab Ocean Sci & Engn Guangdong Zhuhai, Zhuhai 519000, Peoples R China 3.Guangdong Prov Key Lab Marine Resources & Coastal, Guangzhou 510275, Guangdong, Peoples R China 4.Sun Yat Sen Univ, Sch Marine Sci, Guangzhou 510275, Guangdong, Peoples R China 5.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shi, Zhen,Chen, Yuren,Cheng, Weicong,et al. Evaluation of the total maximum allocated load of dissolved inorganic nitrogen using a watershed-coastal ocean coupled model[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2019,673:734, 749. |
| APA | Shi, Zhen.,Chen, Yuren.,Cheng, Weicong.,Zhang, Heng.,Qiao, Jiawei.,...&Gong, Wenping.(2019).Evaluation of the total maximum allocated load of dissolved inorganic nitrogen using a watershed-coastal ocean coupled model.SCIENCE OF THE TOTAL ENVIRONMENT,673,734. |
| MLA | Shi, Zhen,et al."Evaluation of the total maximum allocated load of dissolved inorganic nitrogen using a watershed-coastal ocean coupled model".SCIENCE OF THE TOTAL ENVIRONMENT 673(2019):734. |
入库方式： OAI收割
来源：南海海洋研究所
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