| 刊名 | Meteorological and Environmental Research |
| 作者 | Zhanming LIU*, Yanhua CHEN |
| 作者单位 | School of Architecture and Planning, Foshan University, Foshan 528000, China |
| DOI | 10.19547/j.issn2152-3940.2025.06.005 |
| 年份 | 2025 |
| 刊期 | 6 |
| 页码 | 19~20,25 |
| 关键词 | Dongting Lake basin; Ecological water demand; Calculation method; Tennant method; Guarantee rate method |
| 摘要 | The study of ecological water demand in rivers has been a research hotspot in recent years. In this paper, selecting the widely used research methods (Tennant method, minimum monthly flow average measurement method, monthly average flow guarantee rate method, monthly minimum flow method, 7Q10 improvement method), the ecological water demand of rivers in the Dongting Lake basin was studied. Combined with the hydrological characteristics of the basin water system, the calculation results by the above five methods were averaged. It was obtained that the ecological water demand of rivers in the basin from April to September and from October to next March was 3.876×109 and 3.425×109 m3, respectively. The annual ecological water demand was 7.301×109 m3, accounting for about 11.46% of the average annual runoff in the basin. The research results can provide a basis for regional water resource utilization planning and are of great significance for maintaining the health of river ecosystems. |
