永年洼湿地生态需水量初步研究

Preliminary Study on the Ecological Water Requirement of Yongnianwa Wetland

以永年洼湿地为例,根据湿地生态需水量的概念,把湿地生态需水量划分为湿地植物需水量、湿地土壤需水量和生物栖息地需水量3种类型。分别确定了需水量的级别和相应指标,并计算得出各级生态需水量,其最小生态需水量为1 256万m3,适宜生态需水量为2 944万～4 192万m3,最大生态需水量为6 576万m3,同时提出了湿地生态需水的保障措施,旨在为永年洼湿地的恢复和保护提供科学数据。

Taking Yongnianwa wetland as example, according to the concept of wetland ecological water requirement, wetland ecological water requirement was divided into 3 types, water requirement of wetland vegetation, water requirement of wetland soil and water requirement of wetland wildlife habitats. The water requirement grade and the corresponding index were con- firmed. According to the formula, the water requirement of all grades were calculated. The result showed that the least eco- logical water requirement was 1 256×10^4 m^3, the proper ecological water requirement was 2 944×10^4- 192×10^4 m3, and the largest ecological water requirement was 6 576×10^4 m^3. The safeguards of wetland ecological water were put forward aiming at providing scientific data for the restoration and protection of Yongnianwa wetland.