PDF
Full
Outline
Investigating the impact of high-level pond aquaculture effluent discharge on the response mechanisms of sandy coastlines to typhoons is of significant importance for promoting the sustainable use and value enhancement of coastal resources. This study conducts a comparative analysis of sediment characteristics, including particle size, grain size distribution, and grain size parameters, before and after Typhoon No. 2203, Chaba, focusing on the influence of effluent discharge from high-level ponds on the coastal sediment distribution at Donghai Island in western Guangdong, as well as on normal coastal areas. The research findings indicate the following: (1) After the typhoon, the sediment in normal coastal areas exhibited poorer sorting, with finer sediments nearshore and coarser sediments offshore. (2) The sorting coefficient of sediment from the affected coastal area remained stable post-typhoon, while other parameters (characteristic particle size, grain size composition, and grain size parameters) did not show a consistent pattern of change. (3) The average changes in characteristic particle sizes (D10, D50, and D90) and mean particle size of the affected coastal sediments were significantly greater than those of the normal coastal sediments after the typhoon. The intense wave action and rising water levels induced by the typhoon are critical factors influencing the sediment response in normal coastal areas. In contrast, the response of sediments in the affected coastal areas is more complex, resulting from the interplay between the gully topography created by effluent discharge and sediment redistribution processes, coupled with storm surge dynamics during the storm. This study provides a case for understanding the sediment grain size response characteristics of coastal areas influenced by high-level pond effluent during typhoon events, contributing to a better understanding of the interaction mechanisms between extreme events and aquaculture activities in coastal geomorphological evolution.
PDF
272
118
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62199257
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
