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本文利用不同地物在同一波段或相同地物在不同波段具有不同色调的变化规律，来目视判读７幅ｌ∶ｌ０万的ＴＭ黑白和彩色合成图像。通过细致地分析、对比，在富顺─南溪地区判读不同泥沙含量、不同深浅的水体，了解河床中深槽、浅滩地貌，准确勾绘所有大于像元的水体涯线，确定沟谷的宽度和相对深度，查明沟谷成因，划分漫滩和河谷阶地，圈定丘陵和山地的，分布，研究它们的形态和成因，为区域开发奠定科学的基础。
In this paper, using different features in the same band or the same feature in different bands with different color changes, to visually interpret 7 l: l0 million TM black and white and color composite images. Through careful analysis and comparison, we can interpret water bodies with different sediment contents and shades in Fushun-Nanxi area to understand the deep channel and shoal landform in the riverbed, Relative depth, to identify the cause of the valley, the division of floodplains and valleys, delineation of hills and mountains, distribution, study of their morphology and causes, and lay a scientific foundation for regional development.