沿海平原河网适宜生态配水量分析

Analysis on the Suitable Ecological Water Distribution of River Network in the Coastal Plain

平原河网生态配水可维持平原河网生态稳定、有效促进水体流动、改善河网水环境,是目前普遍采用的改善河网生态环境的措施。基于浙江省沿海平原河网,提出平原河网生态需水分为基本生态需水和目标生态需水,采用Tennant法和水量平衡法、目标流速法和换水频次法分别计算基本生态需水量和目标生态需水量,为确定平原河网生态配水量、分析保障程度提供依据。

Ecological water distribution of river networks which is a commonly used measure to improve the river ecological environment,can maintain the ecological stability,effectively promote water flow and improve the water environment.Based on the coastal plain river network of Zhejiang Province,this paper proposed that the ecological water demand of the river network include the basic ecological water demand and the target ecological water demand,which can be calculated by Tennant method,water balance method,target velocity method and water exchange frequency method.The study can provide a basis for determining the ecological water distribution of plain river network and analyzing the degree of meeting the demand.