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本文首先运用基尼系数研究我国1985-2010年省际煤炭资源流动集中程度的变化,结论显示:1985-2010年我国煤炭资源的输出和输入都稍有分散,但煤炭输出相对于输入较集中,从各个年份上看,这与我国煤炭资源生产区和消费区分布不平衡的情形是一致的。然后,运用齐夫定律,进一步探讨其位序-规模分布规律,结论显示:各时点煤炭资源流动的位序-规模分布均满足齐夫法则。煤炭资源输出的均衡程度略有增大,规模分布形态是单分形,齐夫参数q值始终大于1且逐年减小,说明煤炭资源输出体系整体规模差异正在减小,规模分布逐渐均衡,无标度区向西北部地区移动。煤炭资源输入的均衡程度也略有增大,但规模分布形态由双分形演化为单分形,之后,q值逐渐减小,表明高位序节点发展缓慢,中低位序节点较为发育,规模分布逐渐均衡,无标度区向东南地区移动。这种变化主要与各地煤矿煤炭资源情况、煤炭流通体制、经济水平、产业结构有关。
In this paper, we first use the Gini coefficient to study the changes of concentration degree of inter-provincial coal resources in our country from 1985 to 2010. The results show that the output and input of coal resources in our country are slightly dispersed from 1985 to 2010, but the coal output is more concentrated than the input. In all the years, this is consistent with the uneven distribution of China’s coal resource producing and consuming areas. Then, by using the method of Qi Fu, we further explore its order - size distribution law. The conclusion shows that coal resource flow at all time points has the same order of magnitude and size distribution. The equilibrium of output of coal resources increased slightly, the distribution of scale was single fractal, the q value of ziff parameter was always greater than 1 and decreased year by year, indicating that the overall scale difference of coal resource output system is decreasing, the scale distribution is gradually balanced, Degree zone to the northwest region. The equilibrium degree of coal resource input also increased slightly, but the scale distribution form evolved from bifurcation to a single fractal, and then the value of q gradually decreased, indicating that the development of high-order nodes was slow, the middle-low order nodes were more developed, and the scale distribution gradually balanced , Scale-free zone to the southeast. This change is mainly related to coal resources throughout the coal mines, coal circulation system, economic level, and industrial structure.