一、影响勘查活动的动力因素努力识别矿产勘查经济学中的时间发展趋势,无论对于政府的政策目标还是企业的计划目标都是很重要的。这些动力因素的变化体现着矿产资源地质特性中的经济后果趋势。要解释一个时期所观察到的变化,则应检测其中两个主要的与地质有关的分量——勘探费用,探明的矿产资源的质量。下面通过举例分析1946—1977年间加拿大有色金属勘查的情况,表1显示与这一时期平均值有关的趋势。 First, the driving forces affecting exploration activities Efforts to identify time trends in mineral exploration economics, both for the government’s policy objectives and business goals are very important. Changes in these dynamic factors reflect the economic consequences of the geological characteristics of mineral resources. To explain the changes observed over a period of time, two of the major geological-related components should be examined - exploration costs and the quality of proven mineral resources. An example is given below by way of an analysis of Canada’s non-ferrous metal exploration from 1946 to 1977. Table 1 shows the trends associated with the averages over this period.