基于InSAR的白洋淀湿地潜在水力阻碍物分布格局

明晰潜在水力阻碍物的分布格局对于识别连通受损区域、分析受损原因以及采取针对性连通措施具有重要的科学指导意义。鉴于传统光学遥感方法在植被信息抑制下的湿地水文监测方面具有一定局限性，本文提出基于干涉合成孔径雷达（InSAR）技术，通过地表形变计算反演潜在水力阻碍物的方法，并分析了白洋淀潜在水力阻碍物的分布格局。结果表明，白洋淀湿地的潜在水力阻碍物主要为村庄、耕地和部分芦苇台田，且时空变异显著；白洋淀南部区域的阻碍物更容易导致水文不连通，在水文连通研究中需要重点关注。

Visualizing Potential Hydraulic Barriers in Baiyangdian Wetland Using InSAR

Understanding distributions of potential hydraulic barriers is significant for identifying the disconnected areas, analyzing the causes and taking specific connecting measures. Given the limitations of traditional optical remote sensing methods in wetland hydrological monitoring under vegetation cover, this paper proposed a method based on interferometric synthetic aperture radar (InSAR) technique to identify potential hydraulic barriers by analyzing surface deformation. As a typical study case, distributions of potential hydraulic barriers in Baiyangdian wetland was figured out. The results showed that the potential hydraulic barriers of Baiyangdian wetland were mainly villages, cultivated land and reeds, and the great spatial and temporal variation was investigated. The barriers in the southern Baiyangdian wetland were most likely to lead to hydrological disconnectivity, which should be focused on in the further study of hydrological connectivity.