用地形图做伐区调查设计底图,结合航空像片资料应用,搞伐区调查设计,有以下几个问题需要妥善处理。一、调绘运材线运材线是伐区区划及工艺、工程设计的枢扭,为伐区调查设计测量的一级控制。因此,将运材线准确地调绘到地形图上,是运用这一技术搞好调查设计的关键。 Using topographic maps to do cutting survey design base map, combined with the application of aerial photo data, engage in cutting survey design, there are several issues that need to be properly handled. First, the transfer of Tianyu Tianyun Timberline is the cutting area division and process, engineering design pivot twist for the cutting survey design and measurement of a control. Therefore, the transportation line will be accurately mapped to the topographic map, which is the key to using this technology to do a good job of survey and design.