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引用本文:王雨山,尹德超,王旭清,祁晓凡,夏雨波,马稚桐,张亮,徐蓉桢. 雄安新区白洋淀湿地地表水和地下水转化关系及其对芦苇分布的影响[J]. 中国地质, 2021, 48(5): 1368-1381.
WANG Yushan,YIN Dechao,WANG Xuqing,QI Xiaofan,XIA Yubo,MA Zhitong,ZHANG Liang,XU Rongzhen. Groundwater-surface water interactions in the Baiyangdian wetland,Xiong'an New Area and its impact on reed land[J]. Geology in China, 2021, 48(5): 1368-1381(in Chinese with English abstract).
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雄安新区白洋淀湿地地表水和地下水转化关系及其对芦苇分布的影响
王雨山1, 尹德超1, 王旭清1, 祁晓凡2, 夏雨波3, 马稚桐4, 张亮5, 徐蓉桢1
1.中国地质调查局水文地质环境地质调查中心, 河北 保定 071051;2.中国地质调查局地质环境监测院, 北京 100081;3.中国地质调查局天津地质调查中心, 天津 300170;4.长安大学环境科学与工程学院, 陕西 西安 710054;5.中国地质大学(武汉)环境学院, 湖北 武汉 430074
摘要:
查明地表水和地下水作用关系对湿地生态保护与修复具有重要意义。采用地表水和地下水位监测、氢氧稳定同位素分析、湖床沉积物温度示踪等方法,研究了白洋淀渗漏对周边浅层地下水的影响范围和深度,评价了地表水垂向渗漏速率,并探讨了芦苇分布面积和地表水位以及地下水位埋深的关系。结果表明:白洋淀渗漏受地质结构和水力梯度等因素影响,对浅层地下水垂向上影响深度为20 m,水平向上影响范围存在较大空间变异。周边浅层地下水的补给来源为大气降雨和地表水,其中地表水渗漏的补给比例为0~90.5%。淀区渗漏速率0.01~0.59 mm/d,和含水层埋深关系密切,埋深越小,越有利于地表水渗漏。1976-2020年,白洋淀芦苇分布面积和地表水位关系密切。当地表水位为6.3~6.8 m时,芦苇分布面积最大,在水位小于6.3 m条件下芦苇面积随着水位增高而增加,大于6.8 m条件下随着水位增高而减少。芦苇台地下水位埋深和地表水位显著相关,在2020年4-9月芦苇生长期,除雨季前期外多数时段台地地下水埋深均适宜芦苇发育,建议在雨季前期实施生态补水,通过降低台地地下水位埋深促进芦苇生长发育。研究结果可为白洋淀生态补水、渗漏防治和生态保护提供参考。
关键词:  地表水渗漏  氢氧同位素  温度示踪  芦苇分布  地质调查工程  白洋淀  雄安新区
DOI:10.12029/gc20210504
分类号:P641.2;X143
基金项目:国家自然科学基金(4170021290)和中国地质调查局项目(DD20190300)资助。
Groundwater-surface water interactions in the Baiyangdian wetland,Xiong'an New Area and its impact on reed land
WANG Yushan1, YIN Dechao1, WANG Xuqing1, QI Xiaofan2, XIA Yubo3, MA Zhitong4, ZHANG Liang5, XU Rongzhen1
1.Center For Hydrogeology and Environmental Geology, CGS, Baoding 071051, Hebei, China;2.China Institute of Geo-Environmental Monitoring, CGS, Beijing 100081, China;3.Tianjin Institute of Geology and Mineral Resources, CGS, Tianjin 300170, China;4.School of Environmental Science and Engineering, Chang'an University, Xi'an 710054, Shaanxi, China;5.School of Environment Studies, China University of Geosciences, Wuhan 430074, Hubei, China
Abstract:
It is of great significance to find out the interaction between surface water and groundwater for wetland ecological protection and restoration. A multiply tracers approach including water level monitoring, oxygen and hydrogen isotopes analysis and temperature tracing was used to identify the location, magnitude and depth of surface water leakage to shallow groundwater. As also, a brief study of relationship between reed land and water level and groundwater depth was conducted. The results show that the scope of leakage water is controlled by geological and hydrogeological conditions. The depth is about 20m and the length from lake shore varies spatially. The recharge sources of surrounding shallow groundwater are atmospheric rainfall and surface water, of which the recharge proportion of surface water leakage is 0-90.5%. The leakage rate is from 0.01 to 0.59 mm/d inside the wetland and has a strong relationship with the depth of the shallow aquifer. The less the burial depth, the more conducive to surface water leakage. There was a significant relationship between reed land and the average surface water level from 1976 to 2020. When the surface water level was between 6.3 to 6.8 m, the reed land was the largest. When the water level was less than 6.3 m, the reed land had a positive correlation with it, while the reed land area decreased as the water level was higher than 6.8 m. Groundwater depth had an obvious relationship with surface water level where reeds grew. During the growing season, it showed that groundwater depth was suitable for reeds growth most of the time. In order to prompt reed growth, it is suggested that artificial recharge should be conducted before monsoon season to lower groundwater depth. The conclusions can provide basic supports for water recharge, leakage resisting and eco-environment protecting in the Baiyangdian wetland.
Key words:  surface water leakage  oxygen and hydrogen isotopes  temperature tracing  reed land  hydrogeology survey engineering  Baiyangdian wetland  Xiong'an New Area