漫滩洪水在西安泾渭滨河湿地水文条件恢复中的作用  

Effect of over-bank flooding on hydrological restoration of the Jing Wei wetland

作　　者：田世英[1] 罗纨[1] 贾忠华[2] 海燕[2] 

机构地区：[1]西安理工大学水资源研究所,陕西西安710048 [2]西安理工大学环境研究所,陕西西安710048

出　　处：《水利学报》2008年第1期115-120,共6页Journal of Hydraulic Engineering

基　　金：陕西省自然科学基金(2002D01);西安理工大学科技创新项目基金(106-210631)

摘　　要：利用MODFLOW模型,模拟分析了漫滩洪水对西安泾渭湿地水文条件的影响。研究结果表明:漫滩洪水补给泾渭滨河湿地地下水的作用十分明显,是维持泾渭滨河湿地水文条件的主要水源补给方式;没有漫滩洪水时,渭河河道内水位的涨落对泾渭滨河湿地地下水动态的影响范围很小,仅仅依靠渭河与泾渭滨河湿地的地下水文联系,不足以用来恢复大范围的泾渭滨河湿地。同时,漫滩洪水对距河道300m以外的滨河湿地水文影响最为重要,是其它天然补给途径不能代替的。因此,漫滩洪水是泾渭湿地水文得以维持的主要动力,洪水资源化利用将是恢复该湿地水文条件的重要途径。The effect of over-bank flooding on hydrological restoration of the wetland at the confluence of the Jinghe River and Weihe River is analyzed using MODFLOW model according to the hydrogeological,precipitation and the evaporation data.The results indicate that the over-bank flooding plays important role in recharge of groundwater,which is the main source to sustain the requirement of wetland hydrology.The fluctuation of channel stage will not obviously influence the area more than 300m away from the Weihe River.It is concluded that the over-bank flooding is the primary factor for maintaining hydrologic conditions of the wetland,the utilization of over-bank flood is the most effective way for restoring the hydrologic conditions of the riparian wetland.

关 键 词：漫滩洪水 滨河湿地 湿地水文 恢复 泾渭湿地 

分 类 号：TV213.2[水利工程—水文学及水资源]