随着计算机与遥感技术的不断发展，监督分类在我国资源、环境等各个领域中得到了广泛的应用。尤其在土地调查、遥感估产等方面，我国北方平原、高原地区已取得了显著的成效。但是，在岩溶发育强烈的贵州山区，由于其独特的地形、地物条件（地形切割深，地块破碎而阴影多，地物种类繁杂且分布零乱等），给训练区处理及正确分类造成很大困难。采用屏幕判读识别法不仅可以提高训练样品输入的精度和纯度、减少野外工作时间，而且可以弥补野外所选训练场地分布不均、地类不全和数量不够等缺点．从而提高了分类精度。另外利用屏幕判读识别还可修正计算机监督分类的错分、漏分现象并及时发现一些有特殊意义的环境问题。因此，屏幕判读识别法在岩溶区土地、环境调查中具有重要意义。 With the continuous development of computer and remote sensing technology, supervised classification has been widely used in various fields such as resources and environment in our country. Especially in land survey and remote sensing assessment, remarkable achievements have been made in the northern plains and plateau areas in China. However, in the mountainous areas of Guizhou where karst development is strong, due to its unique topography, topographic conditions (deep terrain cutting, shattering plots, numerous and varied ground objects) Big difficulty. The method of screen interpretation can not only improve the accuracy and purity of training sample input, reduce the working time in the field, but also make up for the shortcomings of uneven distribution of training field, incomplete and insufficient number of training sites in the field. Thus improving the classification accuracy. In addition the use of screen interpretation can also be amended to identify computer classification of misclassification, missed points and the timely detection of some of the special significance of environmental issues. Therefore, the screen interpretation method is of great significance in karst land and environmental survey.