成矿元素品位的变化规律是矿体矿化强度变化的主要影响要素之一．应用消除趋势波动分析（DFA）方法对山东大尹格庄金矿不同穿脉Au元素品位序列的变化特征进行分析，探索序列的波动趋势．结果显示，消除一阶趋势后品位序列的波动函数F（s）与尺度S具有较好的幂律关系，不同穿脉的标度指数值介于0．51与0．77之间，表明元素品位序列存在标度不变性和不同程度的长程相依性；在标度指数相对稳定时，幂律的速度因子随矿化强度增大，指示矿化越强的品位序列波动函数的变化速度越快，可为进一步定量刻画矿床富集程度与固定有利成矿靶区提供参考．%The distribution of ore-forming elements is one of the main factors influencing the variance of miner- alization intensity. In this paper, the detrended fluctuation analysis is applied to analyze the characteristics of Au concentration series in the Dayingezhuang gold deposit in Shandong, China, to explore an indicator for min- eralization intensity. The results show that after elimination of linear trends, the detrended fluctuation function F（s） is of a good power-law relation with the scale s, and the scaling exponent ot varies with the exploration line in a range between 0.51 and 0.76, which indicates a scaling invariance and a long-correlation. It displays that when a is relatively stable, the speed factor η increases with the mineralization intensity; and the more mineral- ization intensity, the greater the change rate mining a mineralized target.
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