鄱阳湖区地下水位动态及其与湖水侧向水力联系分析
发布时间：2018-12-11 21:07
【摘要】：基于野外定点监测数据,运用统计学方法解析鄱阳湖区地下水位年内分布特征和动态变化,辨析湖水和典型区地下水之间的侧向水力联系与程度。统计结果表明,不同洲滩地下水埋深变化范围约 8.1~ 0.1 m,洲滩地下水和湖水在6~9月份保持完全水力连通。湖水位和洲滩地下水位动态变化呈现高度一致性,表明了洲滩地下水和湖水具有密切的侧向水力联系。湖岸带不同典型区的地下水埋深变化范围介于 10~ 2.2 m。湖岸带地下水位与湖水位并不具有日时间尺度变化上的高度一致性,但两者却很好呈现了月尺度上的较好一致性,表明了湖岸带地下水与湖水之间具有一定的相互关系和水力联系。小波分析得出,湖水位和洲滩、湖岸带不同典型区的地下水位均在60 d尺度的周期上存在着极大可能的显著相关,总体上两者呈正相关关系变化,表明湖水和洲滩地下水具有密切的水力联系,但与湖岸带地下水的侧向水力联系可能体现在个别典型时段。为今后鄱阳湖地下水方面的相关研究奠定基础,也为鄱阳湖湿地生态环境保护、水资源评价等方面提供科学依据和参考。
[Abstract]:Based on the field monitoring data, the distribution characteristics and dynamic changes of groundwater table in Poyang Lake region were analyzed by statistical method, and the lateral hydraulic relation and degree between lake water and groundwater in typical area were analyzed. The statistical results show that the variation range of groundwater depth in different beaches is about 8.1 ~ 0.1 m.The beach groundwater and lake water maintain a complete hydraulic connection in June and September. The dynamic variation of lake water level and beach groundwater level is highly consistent, which indicates that there is a close lateral hydraulic relationship between the beach groundwater and lake water. The variation range of groundwater depth in different typical areas of the lakeshore zone ranges from 10 to 2.2 m. There is no high consistency between the groundwater level and the lake water level in the lakeshore zone on the diurnal time scale, but there is a good consistency between them on the monthly scale. It shows that there is a certain relationship and hydraulic relationship between groundwater and lake water in the lakeside zone. Wavelet analysis shows that the groundwater level in different typical areas of lake and shoreline zone is significantly correlated with the period of 60 days, and the correlation between them is positive. The results show that there is a close hydraulic relationship between lake water and beach groundwater, but the lateral hydraulic relationship with groundwater in the lakeshore zone may be reflected in some typical periods. It lays a foundation for future research on groundwater in Poyang Lake, and provides scientific basis and reference for ecological environment protection and water resources evaluation of Poyang Lake wetland.
【作者单位】： 中国科学院南京地理与湖泊研究所流域地理学重点实验室;中国科学院大学;华北水利水电大学;江西师范大学鄱阳湖湿地与流域研究教育部重点实验室;
【基金】：国家重点基础研究发展计划(2012CB417003) 国家自然科学基金项目(41401031) 江西省重大生态安全问题监控协同创新中心项目(JXS-EW-00) 中国科学院流域地理学重点实验室开放基金(WSG2015004)~~
【分类号】：P641.2
本文编号：2373222
[Abstract]:Based on the field monitoring data, the distribution characteristics and dynamic changes of groundwater table in Poyang Lake region were analyzed by statistical method, and the lateral hydraulic relation and degree between lake water and groundwater in typical area were analyzed. The statistical results show that the variation range of groundwater depth in different beaches is about 8.1 ~ 0.1 m.The beach groundwater and lake water maintain a complete hydraulic connection in June and September. The dynamic variation of lake water level and beach groundwater level is highly consistent, which indicates that there is a close lateral hydraulic relationship between the beach groundwater and lake water. The variation range of groundwater depth in different typical areas of the lakeshore zone ranges from 10 to 2.2 m. There is no high consistency between the groundwater level and the lake water level in the lakeshore zone on the diurnal time scale, but there is a good consistency between them on the monthly scale. It shows that there is a certain relationship and hydraulic relationship between groundwater and lake water in the lakeside zone. Wavelet analysis shows that the groundwater level in different typical areas of lake and shoreline zone is significantly correlated with the period of 60 days, and the correlation between them is positive. The results show that there is a close hydraulic relationship between lake water and beach groundwater, but the lateral hydraulic relationship with groundwater in the lakeshore zone may be reflected in some typical periods. It lays a foundation for future research on groundwater in Poyang Lake, and provides scientific basis and reference for ecological environment protection and water resources evaluation of Poyang Lake wetland.
【作者单位】： 中国科学院南京地理与湖泊研究所流域地理学重点实验室;中国科学院大学;华北水利水电大学;江西师范大学鄱阳湖湿地与流域研究教育部重点实验室;
【基金】：国家重点基础研究发展计划(2012CB417003) 国家自然科学基金项目(41401031) 江西省重大生态安全问题监控协同创新中心项目(JXS-EW-00) 中国科学院流域地理学重点实验室开放基金(WSG2015004)~~
【分类号】：P641.2
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