APPLICATION OF THE MULTI-LEVEL SAMPLING INTERPRETATION OF REMOTELY SENSED IMAGERY IN TERRAIN SURVEY AND MAPPING

摘要

The conventional approach for interpretation of land types on remotely sensed imagery depends mostly on one kind of imagery, usually on same scale, which has caused some problems to the interpretation. The present sutdy deals with the utility of multi-level sampling interpretation method for extracting land type information from remotely sensed imagery, taking Huangpuchuan River catchment in Jungar County of Inner-Mongolia, China as the test area. Based on this approach, land types at the different levels, namely, land system, land unit and land site were interpreted and mapped. The study demonstrated that this approach could make the interpretation more efficient and, therefore, much reducing time and costs in terrain survey and mapping. Nevertheless, the accuracy of resultant terrain maps depends greatly on appropriate selection of sampling areas.