Study on Total Control of Total Nitrogen in the Laizhou Bay
Human activity imposes a stronger and increasing impact on the coastal environment by land-based discharge and run-off pollution inputs. Land-based total nitrogen (TN) pollution, as the main cause of eutrophication in the Laizhou Bay, China, should be controlled effectively. Based on a three-dimensi...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-09-01
|
| Series: | Water |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4441/13/17/2439 |
| _version_ | 1797520763758051328 |
|---|---|
| author | Haohong Peng Haoyi Geng Xinyan Mao Jie Shi Xianqing Lv |
| author_facet | Haohong Peng Haoyi Geng Xinyan Mao Jie Shi Xianqing Lv |
| author_sort | Haohong Peng |
| collection | DOAJ |
| description | Human activity imposes a stronger and increasing impact on the coastal environment by land-based discharge and run-off pollution inputs. Land-based total nitrogen (TN) pollution, as the main cause of eutrophication in the Laizhou Bay, China, should be controlled effectively. Based on a three-dimensional pollution transport model, 20 groups of allocation schemes were designed under the requirement that the allocations of three estuaries in the inner bay were adjusted properly, while the two estuaries in the outer bay, i.e., the Yellow River and the Jiehe River, were kept unchanged. The statistical results show that the area ratio of heavily polluted seawater to the entire Laizhou Bay reached the maximum (35.14%) when the load allocation of the Xiaoqinghe River accounted for a high proportion (65%), and the Yuhe River and the Jiaolaihe River accounted for 15% and 20%, respectively. Overall, the pollution levels of the Laizhou Bay were positively associated with the allocation of the Xiaoqinghe River. Reducing pollutant allocation in the Xiaoqinghe River contributed most to the improvement of the seawater quality of the entire Laizhou Bay, and it was followed by a reduction in the Yuhe River and the Jiaolaihe River. |
| first_indexed | 2024-03-10T08:01:14Z |
| format | Article |
| id | doaj.art-a0c1d0312e4e4bc8a7c2f10d33dbe4fe |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-10T08:01:14Z |
| publishDate | 2021-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-a0c1d0312e4e4bc8a7c2f10d33dbe4fe2023-11-22T11:25:51ZengMDPI AGWater2073-44412021-09-011317243910.3390/w13172439Study on Total Control of Total Nitrogen in the Laizhou BayHaohong Peng0Haoyi Geng1Xinyan Mao2Jie Shi3Xianqing Lv4Key Laboratory of Physical Oceanography, Ministry of Education of China, Ocean University of China, Qingdao 266100, ChinaKey Laboratory of Marine Environment and Ecology, Ministry of Education of China, Ocean University of China, Qingdao 266100, ChinaKey Laboratory of Physical Oceanography, Ministry of Education of China, Ocean University of China, Qingdao 266100, ChinaKey Laboratory of Marine Environment and Ecology, Ministry of Education of China, Ocean University of China, Qingdao 266100, ChinaKey Laboratory of Physical Oceanography, Ministry of Education of China, Ocean University of China, Qingdao 266100, ChinaHuman activity imposes a stronger and increasing impact on the coastal environment by land-based discharge and run-off pollution inputs. Land-based total nitrogen (TN) pollution, as the main cause of eutrophication in the Laizhou Bay, China, should be controlled effectively. Based on a three-dimensional pollution transport model, 20 groups of allocation schemes were designed under the requirement that the allocations of three estuaries in the inner bay were adjusted properly, while the two estuaries in the outer bay, i.e., the Yellow River and the Jiehe River, were kept unchanged. The statistical results show that the area ratio of heavily polluted seawater to the entire Laizhou Bay reached the maximum (35.14%) when the load allocation of the Xiaoqinghe River accounted for a high proportion (65%), and the Yuhe River and the Jiaolaihe River accounted for 15% and 20%, respectively. Overall, the pollution levels of the Laizhou Bay were positively associated with the allocation of the Xiaoqinghe River. Reducing pollutant allocation in the Xiaoqinghe River contributed most to the improvement of the seawater quality of the entire Laizhou Bay, and it was followed by a reduction in the Yuhe River and the Jiaolaihe River.https://www.mdpi.com/2073-4441/13/17/2439total controlland-based pollutiontotal nitrogennumerical simulationLaizhou Bay |
| spellingShingle | Haohong Peng Haoyi Geng Xinyan Mao Jie Shi Xianqing Lv Study on Total Control of Total Nitrogen in the Laizhou Bay Water total control land-based pollution total nitrogen numerical simulation Laizhou Bay |
| title | Study on Total Control of Total Nitrogen in the Laizhou Bay |
| title_full | Study on Total Control of Total Nitrogen in the Laizhou Bay |
| title_fullStr | Study on Total Control of Total Nitrogen in the Laizhou Bay |
| title_full_unstemmed | Study on Total Control of Total Nitrogen in the Laizhou Bay |
| title_short | Study on Total Control of Total Nitrogen in the Laizhou Bay |
| title_sort | study on total control of total nitrogen in the laizhou bay |
| topic | total control land-based pollution total nitrogen numerical simulation Laizhou Bay |
| url | https://www.mdpi.com/2073-4441/13/17/2439 |
| work_keys_str_mv | AT haohongpeng studyontotalcontroloftotalnitrogeninthelaizhoubay AT haoyigeng studyontotalcontroloftotalnitrogeninthelaizhoubay AT xinyanmao studyontotalcontroloftotalnitrogeninthelaizhoubay AT jieshi studyontotalcontroloftotalnitrogeninthelaizhoubay AT xianqinglv studyontotalcontroloftotalnitrogeninthelaizhoubay |