滹沱河岗黄段湿地生态需水量研究

Study on the Ecological Water Requirement of Ganghuang Section Wetland in the Hutuohe River

以滹沱河岗黄段湿地为例,按照湿地生态系统结构和功能,把生态需水量划分为植被需水量、土壤需水量、生物栖息地需水量、补给地下水需水量和河湖需水量5种类型,并分别确定了需水量的级别和相应的指标,计算了各级别的生态需水量。结果表明,滹沱河岗黄段湿地最小生态需水量为49295万m3,适宜生态需水量为88650万～160393万m3,最大需水量为389691万m3。最后提出了研究区适宜缺水量和最大缺水量分别为61350万～133093万m3和362391万m3。

Taking the Ganghuang section wetland of Hutuohe river for example,according to the structure functions of wetland of ecological system,ecological water requirement was divided into 5 types,water requirement of wetland vegetation,water requirement of wetland soil,water requirement of wetland wildlife habitats,recharging ground water and water requirement of river and lake.The water requirement grade and the corresponding index were confirmed.According to the formula,the water requirement of all grades were calculated.The result showed that he least ecological water requirement was 49 295×10^4 m^3,the proper ecological water requirement was 88 650×10^4～160 393×10^4 m^3,and the most ecological water requirement was 389 691×10^4 m^3.Finally,the authors pointed out that the proper and the most ecological water shortage of research area were 61 350×10^4～133 093×10^4 m^3,362 391×10^4 m^3 resp.