北京泥石流沟道现状调查及特征分析

泥石流沟道普查是北京市水土保持情况普查的主要内容之一。北京市基于已有泥石流研究成果,采用高分辨率、高精度基础数据,运用GIS、遥感与实地勘测相结合的方式,对北京市已经发生过或具备泥石流发生条件的面积大于0.1 km2的泥石流沟道进行了全面调查。基于此次调查成果,对北京泥石流沟道的数量、分布、形态特征及潜在危害等现状进行了阐述和分析。

Investigation and analysis of the debris flow gullies in Beijing

The debris flow gully census is a part of soil and water conservation census in eing. comprenenve survey has been made on the debris flow gullies of the catchments greater than 0.1 km2 in Beijing, which have occurred or have conditions to occur debris flow disasters.The investigation is based on the research achievements of Beijing＇s debris flow, using basic data with high resolution and precision, applying with the combined methods of GIS, remote sensing and field survey. In this paper, the status of the gullies＇s number, distribution, morphological characteristics and potential hazards has been expounded and analyzed on the basis of survey results.