渗透系数是重要的水文地质参数之一,其大小直接或间接地影响着地表水与地下水的转化能力,准确推算湿地床渗透系数具有重要的意义。以博斯腾湖湿地为研究对象,将博斯腾湖湿地分为黄水沟区、大湖区、小湖区3个单元,分别采用野外现场竖管试验法和室内颗粒分析法对其沉积物渗透系数进行测定。结果表明:(1)2种实验方法均显示,博斯腾湖湿地3个单元沉积物渗透系数大小关系为:K_(大湖)>K_(黄水沟)>K_(小湖);(2)对博斯腾湖湿地沉积物颗粒粒度进行分析发现,湿地沉积物主要以黏土为主,砂土次之。3个单元黏土含量关系为:大湖区<黄水沟区<小湖区,沉积物渗透系数与黏土含量呈负相关关系;(3)对沉积物渗透系数进行空间变异性分析得知,博斯腾湖湿地沉积物渗透系数自西向东、自北向南依次递增,渗透系数最高的地段主要集中在白鹭洲附近。 The permeability coefficient is one of the important hydrogeological parameters. Its size directly or indirectly affects the transformation ability of surface water and groundwater. It is of great significance to accurately calculate the permeability coefficient of wetland bed. Taking Bosten wetland as the research object, the Bosten Lake wetland was divided into three units: Huangshugou, Great Lakes and Lake Small Lakes. The field permeable coefficient of sediments was determined by field standpipe test and indoor particle analysis respectively. The results show that: (1) Both experimental methods show that the relationship between the permeability coefficient of sediment in the three units in the Bosten Lake wetland is K_ (big lake)> K_ (yellow gutter)> K_ (small lake); (2) Sediment particle size analysis found that the wetland sediments mainly clay, followed by sand. The relationship between clay content in three units is as follows: Huanghegou