The Nitrogen Budget of Coastal Eastern Guangdong in the Last 15 Years
Nitrogen pollution has caused severe ecological and environmental crisis, especially in densely populated coastal regions. Using a mathematical model based on statistical data series from industry, agriculture, environmental protection, and population in 2000, 2005, 2010, and 2015, this paper aims t...
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MDPI AG
2021-05-01
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| Series: | Hydrology |
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| Online Access: | https://www.mdpi.com/2306-5338/8/2/81 |
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| author | Yongsong Su Song Song Lichun Xie Zhenyu He |
| author_facet | Yongsong Su Song Song Lichun Xie Zhenyu He |
| author_sort | Yongsong Su |
| collection | DOAJ |
| description | Nitrogen pollution has caused severe ecological and environmental crisis, especially in densely populated coastal regions. Using a mathematical model based on statistical data series from industry, agriculture, environmental protection, and population in 2000, 2005, 2010, and 2015, this paper aims to estimate the nitrogen income and expenditure of coastal Eastern Guangdong, to reveal the temporal variation of the nitrogen budget in the coastal region with high agriculture intensity, and to suggest a management strategy for the local nitrogen control. The results show that: coastal Eastern Guangdong is a nitrogen surplus region, with nitrogen load and nitrogen flux varying in the range 276.01–299.60 kg N ha<sup>−1</sup> yr<sup>−1</sup> and 221.26–239.06 kg N ha<sup>−1</sup> yr<sup>−1</sup>, respectively, during the period 2000–2015; from 2000 to 2015, the overall nitrogen surplus and the nitrogen surplus unit area showed an obvious upward trend, indicating that nitrogen pollution in the area was deteriorating; agricultural used fertilizer serves as the main contributor to nitrogen input, while water nitrogen accounts for the highest portion of nitrogen output; despite the fluctuation of nitrogen input and output, water nitrogen output steadily increased, suggesting a stronger water environment management requirement. This research provides reference for researchers and decision-makers in the ecological and environmental domains. |
| first_indexed | 2024-03-10T11:30:34Z |
| format | Article |
| id | doaj.art-4efc3cdae06e46589b5eb8e548401399 |
| institution | Directory Open Access Journal |
| issn | 2306-5338 |
| language | English |
| last_indexed | 2024-03-10T11:30:34Z |
| publishDate | 2021-05-01 |
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| record_format | Article |
| series | Hydrology |
| spelling | doaj.art-4efc3cdae06e46589b5eb8e5484013992023-11-21T19:15:27ZengMDPI AGHydrology2306-53382021-05-01828110.3390/hydrology8020081The Nitrogen Budget of Coastal Eastern Guangdong in the Last 15 YearsYongsong Su0Song Song1Lichun Xie2Zhenyu He3School of Geography and Remote Sensing, Guangzhou University, Guangzhou 510006, ChinaSchool of Geography and Remote Sensing, Guangzhou University, Guangzhou 510006, ChinaSchool of Geography and Tourism, Guangdong University of Finance & Economics, Guangzhou 510320, ChinaSchool of Geography and Remote Sensing, Guangzhou University, Guangzhou 510006, ChinaNitrogen pollution has caused severe ecological and environmental crisis, especially in densely populated coastal regions. Using a mathematical model based on statistical data series from industry, agriculture, environmental protection, and population in 2000, 2005, 2010, and 2015, this paper aims to estimate the nitrogen income and expenditure of coastal Eastern Guangdong, to reveal the temporal variation of the nitrogen budget in the coastal region with high agriculture intensity, and to suggest a management strategy for the local nitrogen control. The results show that: coastal Eastern Guangdong is a nitrogen surplus region, with nitrogen load and nitrogen flux varying in the range 276.01–299.60 kg N ha<sup>−1</sup> yr<sup>−1</sup> and 221.26–239.06 kg N ha<sup>−1</sup> yr<sup>−1</sup>, respectively, during the period 2000–2015; from 2000 to 2015, the overall nitrogen surplus and the nitrogen surplus unit area showed an obvious upward trend, indicating that nitrogen pollution in the area was deteriorating; agricultural used fertilizer serves as the main contributor to nitrogen input, while water nitrogen accounts for the highest portion of nitrogen output; despite the fluctuation of nitrogen input and output, water nitrogen output steadily increased, suggesting a stronger water environment management requirement. This research provides reference for researchers and decision-makers in the ecological and environmental domains.https://www.mdpi.com/2306-5338/8/2/81nitrogen budgetcoastal Eastern Guangdongnitrogen surplushigh agriculture intensity |
| spellingShingle | Yongsong Su Song Song Lichun Xie Zhenyu He The Nitrogen Budget of Coastal Eastern Guangdong in the Last 15 Years Hydrology nitrogen budget coastal Eastern Guangdong nitrogen surplus high agriculture intensity |
| title | The Nitrogen Budget of Coastal Eastern Guangdong in the Last 15 Years |
| title_full | The Nitrogen Budget of Coastal Eastern Guangdong in the Last 15 Years |
| title_fullStr | The Nitrogen Budget of Coastal Eastern Guangdong in the Last 15 Years |
| title_full_unstemmed | The Nitrogen Budget of Coastal Eastern Guangdong in the Last 15 Years |
| title_short | The Nitrogen Budget of Coastal Eastern Guangdong in the Last 15 Years |
| title_sort | nitrogen budget of coastal eastern guangdong in the last 15 years |
| topic | nitrogen budget coastal Eastern Guangdong nitrogen surplus high agriculture intensity |
| url | https://www.mdpi.com/2306-5338/8/2/81 |
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