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对试验区卫星磁带进行单波段、聚类、增强、比值、消减等电算机光谱数字处理,并打印成各类光谱数字字符图,筛选与试区地貌、土壤信息相关性强的字符图,经平面几何校正并着色成“彩色字符平面图”.按照准备工作、路线踏勘、室内预判、样区详查建立解译标志、室内详判勾绘图斑、野外核实、转绘成图量算面积等调查、解译、制图步骤,完成试验区土壤解译制图.试验结果证明,卫星磁带字符图用于土壤调查和制图,能够满足中比例尺土壤调查制图的规范要求,具有速度快、精度高、成本低的优点.可用于县级中比例尺土壤调查与制图,为今后土壤资源动态监测提供基础数字化处理图件.
The satellite tape in the experimental area was digitally processed by single-band, clustering, enhancement, ratio, subtraction and other computerized spectrographs and printed into various spectral digital character maps to screen the character maps closely related to the topography and soil information of the test area. The plane geometry is corrected and colored into a “color character plan.” In accordance with the preparatory work, route reconnaissance, indoor pre-judgment, detailed investigation of the area to establish interpretation signs, indoor detailed drawing hook, field verification, Such as surveying, interpreting and mapping steps, and completing the soil interpretation and mapping of the experimental area.The experimental results show that the satellite tape character map is used for soil survey and mapping, which can meet the specification requirements of medium-scale soil mapping in surveying and mapping and has the advantages of fast speed, high precision, Low cost, which can be used for soil survey and mapping of the scale in the county level, and provide basic digitized map for the dynamic monitoring of soil resources in the future.