Differences in sediment nitrogen and phosphorus distribution between riverside and lakeside wetlands in a river-connected lake
The distribution of nutrients in sediments is the result of multiple factors, including hydrological conditions and vegetation regulation, and in wetlands with complex hydrological conditions, this distribution is uncertain. In this study, the spatial distribution patterns of nitrogen and phosphorus...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2024-01-01
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| Series: | Environmental Research Communications |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2515-7620/ad2b17 |
| _version_ | 1797290372629528576 |
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| author | Zenghui Peng Shiyu Niu Qinghua Luo Youzhi Li |
| author_facet | Zenghui Peng Shiyu Niu Qinghua Luo Youzhi Li |
| author_sort | Zenghui Peng |
| collection | DOAJ |
| description | The distribution of nutrients in sediments is the result of multiple factors, including hydrological conditions and vegetation regulation, and in wetlands with complex hydrological conditions, this distribution is uncertain. In this study, the spatial distribution patterns of nitrogen and phosphorus in sediments were studied in the riverside and lakeside wetlands of Dongting Lake, a typical river-connected lake. The results showed that the nitrogen and phosphorus concentrations in the surface sediments were higher than those in the subsurface sediments in both the riverside and lakeside wetlands. In addition, the concentration of total nitrogen (TN) of lakeside wetlands in the surface sediments was higher than that of riverside wetlands, whereas the concentration of total phosphorus (TP) did not differ between the two wetland types. In the surface sediments, there were significant positive correlations between the TN and TP concentrations in the riverside wetlands ( p < 0.05), but no significant correlation in the lakeside wetlands ( p > 0.05). In riverside wetlands, the nitrogen and phosphorus concentrations showed strong spatial dependence. However, in the lakeside wetlands, the spatial dependence of NO _3 ^− -N was strong, that of NH _4 ^+ -N was moderate, and that of TN and TP was weak. This study shows that both hydrology and vegetation cause differences in the distribution of nutrients in the sediments. The results obtained from this investigation clarify the differences of sediment nitrogen and phosphorus distributions in the two types of wetlands and provide a technical reference for the management of different wetland types. |
| first_indexed | 2024-03-07T19:21:29Z |
| format | Article |
| id | doaj.art-eed09ec4f7a54fbab730967abc850123 |
| institution | Directory Open Access Journal |
| issn | 2515-7620 |
| language | English |
| last_indexed | 2024-03-07T19:21:29Z |
| publishDate | 2024-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Environmental Research Communications |
| spelling | doaj.art-eed09ec4f7a54fbab730967abc8501232024-02-29T11:24:55ZengIOP PublishingEnvironmental Research Communications2515-76202024-01-016202502110.1088/2515-7620/ad2b17Differences in sediment nitrogen and phosphorus distribution between riverside and lakeside wetlands in a river-connected lakeZenghui Peng0Shiyu Niu1Qinghua Luo2Youzhi Li3https://orcid.org/0000-0002-1341-3387College of Environment and Ecology, Hunan Agricultural University , Changsha 410128, People’s Republic of China; Hunan Provincial Key Laboratory of Rural Ecosystem Health in Dongting Lake Area, Hunan Agricultural University , Changsha 410128, People’s Republic of ChinaCollege of Environment and Ecology, Hunan Agricultural University , Changsha 410128, People’s Republic of China; Hunan Provincial Key Laboratory of Rural Ecosystem Health in Dongting Lake Area, Hunan Agricultural University , Changsha 410128, People’s Republic of ChinaCollege of Biological and Chemical Engineering, Changsha University , Changsha 410022, People’s Republic of ChinaCollege of Environment and Ecology, Hunan Agricultural University , Changsha 410128, People’s Republic of China; Hunan Provincial Key Laboratory of Rural Ecosystem Health in Dongting Lake Area, Hunan Agricultural University , Changsha 410128, People’s Republic of ChinaThe distribution of nutrients in sediments is the result of multiple factors, including hydrological conditions and vegetation regulation, and in wetlands with complex hydrological conditions, this distribution is uncertain. In this study, the spatial distribution patterns of nitrogen and phosphorus in sediments were studied in the riverside and lakeside wetlands of Dongting Lake, a typical river-connected lake. The results showed that the nitrogen and phosphorus concentrations in the surface sediments were higher than those in the subsurface sediments in both the riverside and lakeside wetlands. In addition, the concentration of total nitrogen (TN) of lakeside wetlands in the surface sediments was higher than that of riverside wetlands, whereas the concentration of total phosphorus (TP) did not differ between the two wetland types. In the surface sediments, there were significant positive correlations between the TN and TP concentrations in the riverside wetlands ( p < 0.05), but no significant correlation in the lakeside wetlands ( p > 0.05). In riverside wetlands, the nitrogen and phosphorus concentrations showed strong spatial dependence. However, in the lakeside wetlands, the spatial dependence of NO _3 ^− -N was strong, that of NH _4 ^+ -N was moderate, and that of TN and TP was weak. This study shows that both hydrology and vegetation cause differences in the distribution of nutrients in the sediments. The results obtained from this investigation clarify the differences of sediment nitrogen and phosphorus distributions in the two types of wetlands and provide a technical reference for the management of different wetland types.https://doi.org/10.1088/2515-7620/ad2b17Dongting lakesediment nutrientwetland typespatial heterogeneityhydrological conditionvegetation |
| spellingShingle | Zenghui Peng Shiyu Niu Qinghua Luo Youzhi Li Differences in sediment nitrogen and phosphorus distribution between riverside and lakeside wetlands in a river-connected lake Environmental Research Communications Dongting lake sediment nutrient wetland type spatial heterogeneity hydrological condition vegetation |
| title | Differences in sediment nitrogen and phosphorus distribution between riverside and lakeside wetlands in a river-connected lake |
| title_full | Differences in sediment nitrogen and phosphorus distribution between riverside and lakeside wetlands in a river-connected lake |
| title_fullStr | Differences in sediment nitrogen and phosphorus distribution between riverside and lakeside wetlands in a river-connected lake |
| title_full_unstemmed | Differences in sediment nitrogen and phosphorus distribution between riverside and lakeside wetlands in a river-connected lake |
| title_short | Differences in sediment nitrogen and phosphorus distribution between riverside and lakeside wetlands in a river-connected lake |
| title_sort | differences in sediment nitrogen and phosphorus distribution between riverside and lakeside wetlands in a river connected lake |
| topic | Dongting lake sediment nutrient wetland type spatial heterogeneity hydrological condition vegetation |
| url | https://doi.org/10.1088/2515-7620/ad2b17 |
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