研究报告
刘烨凌,郝斌,王青,杜际增,崔保山,杨薇.铜陵市河湖水系功能连通性评估[J].环境科学学报,2022,42(1):168-178
铜陵市河湖水系功能连通性评估
- Evaluation of functional connectivity of river and lake systems in Tongling City
- 基金项目:国家重点研发计划(No.2017YFC0404500);铜陵市长江生态环境保护修复驻点跟踪研究项目(No.2020CGSF134)
- 刘烨凌
- 北京师范大学环境学院,北京师范大学水环境模拟国家重点实验室,北京 100875
- 王青
- 北京师范大学环境学院,北京师范大学水环境模拟国家重点实验室,北京 100875;黄河口湿地生态系统教育部野外科学观测研究站, 东营 257500
- 杜际增
- 北京师范大学环境学院,北京师范大学水环境模拟国家重点实验室,北京 100875;黄河口湿地生态系统教育部野外科学观测研究站, 东营 257500
- 崔保山
- 北京师范大学环境学院,北京师范大学水环境模拟国家重点实验室,北京 100875;黄河口湿地生态系统教育部野外科学观测研究站, 东营 257500
- 杨薇
- 北京师范大学环境学院,北京师范大学水环境模拟国家重点实验室,北京 100875;黄河口湿地生态系统教育部野外科学观测研究站, 东营 257500
- 摘要:以铜陵市河湖水系为研究区,利用土地利用类型、植被覆盖度、降雨侵蚀力、地形等数据,分别计算了针对总氮、总磷通量的功能连通性指数,对比分析了不同流域及其河湖水系的连通性情况,并提出相应的水文连通调控措施.结果表明:基于总氮的功能连通性指数的平均值在菜子湖、岱冲湖、连城湖、白荡湖、枫沙湖、陈瑶湖、顺安河和黄浒河分别为0.90、0.56、0.53、0.38、0.48、0.52、0.82和0.63;基于总磷的功能连通性指数的平均值在菜子湖、岱冲湖、连城湖、白荡湖、枫沙湖、陈瑶湖、顺安河和黄浒河分别为0.63、0.20、0.17、0.01、0.12、0.15、0.56和0.37;总体上河湖连通性差异显著.本研究从河湖功能连通性角度为河湖水系功能的修复提供数据支持.
- Abstract:Taking river-lake system in Tongling as the research area, in this study, indexes of total nitrogen (TN) and total phosphorus (TP) flux were calculated based on the data of land use, vegetation coverage, rainfall erosivity and topography. Then, the connectivity of different basins and their river-lake systems were compared and analyzed, and the corresponding hydrological connectivity control measures were put forward. The results showed that the average values of functional connectivity indexes based on TN in Lake Caizi, Daichong, Liancheng, Baidang, Fengsha, Chenyao, Shun'an River and Huanghu River were 0.90, 0.56, 0.53, 0.38, 0.48, 0.52, 0.82 and 0.63, respectively. The average values of functional connectivity indexes based on TP in Lake Caizi, Daichong, Liancheng, Baidang, Fengsha, Chenyao, Shun'an River and Huanghu River were 0.63, 0.20, 0.17, 0.01, 0.12, 0.15, 0.56 and 0.37, respectively. In general, there are significant differences among functional connectivity of different river-lake systems. This study provides data support for the restoration of the function of the river-lake system.