鄱阳湖区地下水位动态及其与湖水侧向水力联系分析

doi:10.11870/cjlyzyyhj201612013

长江流域资源与环境 >> 2016, Vol. 25 >> Issue (12): 1894-1902.doi: 10.11870/cjlyzyyhj201612013

鄱阳湖区地下水位动态及其与湖水侧向水力联系分析

李云良¹, 张小琳², 赵贵章³, 姚静¹, 张奇^1,4

1. 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, 江苏南京 210008;
2. 中国科学院大学, 北京 100049;
3. 华北水利水电大学, 河南郑州 450045;
4. 江西师范大学, 鄱阳湖湿地与流域研究教育部重点实验室, 江西南昌 330022

收稿日期:2016-05-04 修回日期:2016-07-19 出版日期:2016-12-20
作者简介:李云良(1983~),男,助理研究员,博士,主要从事湖泊流域系统水文水动力过程研究.E-mail:yunliangli@niglas.ac.cn
基金资助:
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）

DYNAMICS OF GROUNDWATER LEVEL AND LATERALLY HYDRAULIC CONNECTION BETWEEN LAKE AND GROUNDWATER IN POYANG LAKE AREA

LI Yun-liang¹, ZHANG Xiao-lin², ZHAO Gui-zhang³, YAO Jing¹, ZHANG Qi^1,4

1. Key Laboratory of Watershed Geographic Science, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China;
2. University of Chinese Academy of Sciences, Beijing 100049, China;
3. North China University of Water Resources and Electric Power, Zhengzhou 450045, China;
4. Key Laboratory of Poyang Lake Wetland and Watershed Research, Ministry of Education, Jiangxi Normal University, Nanchang 330022, China

Received:2016-05-04 Revised:2016-07-19 Online:2016-12-20
Supported by:
National Basic Research Program of China(2012CB417003);National Natural Science Foundation of China(41401031);Collaborative Innovation Center for Major Ecological Security Issues of Jiangxi Province and Monitoring Implementation(JXS-EW-00);Key Laboratory of Watershed Geographic Science,Nanjing Institute of Geography and Limnology,Chinese Academy of Sciences(WSG2015004)

摘要/Abstract

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。

关键词: 湖水位, 地下水位, 水力联系, 小波分析, 鄱阳湖

Abstract: Study of the interactions and exchange fluxes between groundwater and lake water is an important prerequisite for understanding and preserving groundwater-lake water ecosystems. The objectives of this paper are to combine observed lake water level and groundwater level (during 2014) and statistical methods to analyze the dynamics of groundwater level response to the lake water level changes around Poyang Lake. Additionally, we further explored the laterally hydraulic connection between lake water and groundwater. Statistical results showed that the groundwater depth varies from -8.1 to -0.1 m in different delta wetlands of the Poyang Lake, and the lake water and groundwater had a fully hydraulic connection during the high lake water level periods (June-September). In addition, the variations of groundwater level in the typical delta wetlands were similar to those of the lake water level, suggesting a close hydraulic connection between the two. Statistical results also showed that the groundwater depth has a range of -10~-2.2 m in different lakeshores around the lake. Although the groundwater level in different lakeshores and the lake water level are obviously different at a daily scale in terms of the temporal dynamics, they appear to exhibit similar variation pattern at a monthly scale. The wavelet analysis demonstrated that both the lake water level and the groundwater level in different areas were of obvious 60 days significant oscillation periods with the positive correlations. This result indicates that, in generally, Poyang Lake water has a close hydraulic connection with the groundwater of different delta wetlands, but a relatively weak hydraulic connection between the two depended on the local water regime. The outcomes of this study will not only help improve our understanding of groundwater-lake water dynamics in the Poyang Lake area, but also can provide scientific basis for future groundwater management and water resources assessment.

Key words: lake water level, groundwater level, hydraulic connection, wavelet analysis, Poyang Lake

中图分类号:

P641.6

李云良, 张小琳, 赵贵章, 姚静, 张奇. 鄱阳湖区地下水位动态及其与湖水侧向水力联系分析[J]. 长江流域资源与环境, 2016, 25(12): 1894-1902.

LI Yun-liang, ZHANG Xiao-lin, ZHAO Gui-zhang, YAO Jing, ZHANG Qi. DYNAMICS OF GROUNDWATER LEVEL AND LATERALLY HYDRAULIC CONNECTION BETWEEN LAKE AND GROUNDWATER IN POYANG LAKE AREA[J]. RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN, 2016, 25(12): 1894-1902.

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