全国侵蚀沟道普查指标及方法初探

Study on indicators and methods with regards to national eroded gully survey

侵蚀沟道普查是全国水利普查中水土保持普查重要内容之一,通过调查侵蚀沟道现状,可掌握侵蚀沟道的分布、面积及危害等。对全国侵蚀沟道普查的目标、对象、指标及采集方法、技术路线、流程等进行了初探,提出了利用"3S"技术提取普查指标和利用GPS、激光测距仪以及传统测量方法进行普查指标采集的方法,可为全国侵蚀沟道普查工作提供借鉴和技术支撑。

In the generation investigation on national water conservancy,eroded gully survey is one of the important contents of soil and water conservation.We can master its distribution,area and harmfulness through surveying the status of eroded gullies.We primarily explored the aims,objects,indicators and their collected methods,technical routes as well as the procedures of the national eroded gully survey.It is found that we can extract the survey indicators using ＂3S＂ technology and collect the indicators using GPS,laser rangefinder and traditional measuring methods,which provides technical support and reference for national eroded gully survey.