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遥感技术为矿产勘查及靶区优选提供了一种快速且有效的手段。然而,在高植被覆盖区,传统的遥感技术却遇到很大障碍,虽然有研究指出,利用适当方法可以穿透地表植被这道屏障而直接观察到地表岩性及蚀变信息(杨长保等,2007),但在多数情况下,植被对地表岩性及构造信息影响不容忽视。一般地,植物的反射辐射对像元亮度值的影响与像元内植物分布面积的相对大小有关,若植被面积达到像元面积的
Remote sensing technology provides a quick and effective method for mineral prospecting and target area optimization. However, the traditional remote sensing technology encounters great obstacles in high-vegetation cover areas. Although some studies have pointed out that the surface lithology and alteration information can be directly observed through the use of appropriate methods to penetrate the barrier of surface vegetation (Yang Changbao et al. 2007), but in most cases, the influence of vegetation on surface lithology and tectonic information can not be ignored. In general, the influence of plant’s reflected radiation on the pixel brightness value is related to the relative size of the distribution area of the plants in the pixel. If the area of the vegetation reaches the pixel area