鄱陽湖區(qū)地下水位動態(tài)及其與湖水側(cè)向水力聯(lián)系分析
發(fā)布時間：2018-12-11 21:07
【摘要】：基于野外定點監(jiān)測數(shù)據(jù),運用統(tǒng)計學方法解析鄱陽湖區(qū)地下水位年內(nèi)分布特征和動態(tài)變化,辨析湖水和典型區(qū)地下水之間的側(cè)向水力聯(lián)系與程度。統(tǒng)計結(jié)果表明,不同洲灘地下水埋深變化范圍約 8.1~ 0.1 m,洲灘地下水和湖水在6~9月份保持完全水力連通。湖水位和洲灘地下水位動態(tài)變化呈現(xiàn)高度一致性,表明了洲灘地下水和湖水具有密切的側(cè)向水力聯(lián)系。湖岸帶不同典型區(qū)的地下水埋深變化范圍介于 10~ 2.2 m。湖岸帶地下水位與湖水位并不具有日時間尺度變化上的高度一致性,但兩者卻很好呈現(xiàn)了月尺度上的較好一致性,表明了湖岸帶地下水與湖水之間具有一定的相互關(guān)系和水力聯(lián)系。小波分析得出,湖水位和洲灘、湖岸帶不同典型區(qū)的地下水位均在60 d尺度的周期上存在著極大可能的顯著相關(guān),總體上兩者呈正相關(guān)關(guān)系變化,表明湖水和洲灘地下水具有密切的水力聯(lián)系,但與湖岸帶地下水的側(cè)向水力聯(lián)系可能體現(xiàn)在個別典型時段。為今后鄱陽湖地下水方面的相關(guān)研究奠定基礎(chǔ),也為鄱陽湖濕地生態(tài)環(huán)境保護、水資源評價等方面提供科學依據(jù)和參考。
[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.
【作者單位】： 中國科學院南京地理與湖泊研究所流域地理學重點實驗室;中國科學院大學;華北水利水電大學;江西師范大學鄱陽湖濕地與流域研究教育部重點實驗室;
【基金】：國家重點基礎(chǔ)研究發(fā)展計劃(2012CB417003) 國家自然科學基金項目(41401031) 江西省重大生態(tài)安全問題監(jiān)控協(xié)同創(chuàng)新中心項目(JXS-EW-00) 中國科學院流域地理學重點實驗室開放基金(WSG2015004)~~
【分類號】：P641.2
本文編號：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.
【作者單位】： 中國科學院南京地理與湖泊研究所流域地理學重點實驗室;中國科學院大學;華北水利水電大學;江西師范大學鄱陽湖濕地與流域研究教育部重點實驗室;
【基金】：國家重點基礎(chǔ)研究發(fā)展計劃(2012CB417003) 國家自然科學基金項目(41401031) 江西省重大生態(tài)安全問題監(jiān)控協(xié)同創(chuàng)新中心項目(JXS-EW-00) 中國科學院流域地理學重點實驗室開放基金(WSG2015004)~~
【分類號】：P641.2
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