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煤炭是我国最主要的一次能源,煤炭的闭合性流动反映了区域自身内部或区域之间能源经济的交互影响。利用0-1线性规划对我国8区域煤炭运输的物质流矩阵作了两个层级的分解,通过两个层级的子矩阵找出了我国1998—2007年最大两个层级的闭合性煤炭流动,并从时间和空间呈现的特征作了分析。研究结果显示:①无论是第一层级的闭合性煤炭流还是第二层级的闭合性煤炭流,短期内都没有发生大的变化,表明我国区域的资源格局以及用煤供给需求在短期内具有相对稳定性;②1998—2003年空间流动的界限分明,第一层级均为区域自身的内部流动,第二层级均为区域之间的闭合性流动。从2004年开始空间流动界限不再分明,根据第一层级的空间特征显示,我国最大的闭合性煤炭流不仅仅出现在区域内部,也出现在区域之间,表明区域与区域之间的能源经济联系有所加强。
Coal is the most important primary energy source in our country. The closed flow of coal reflects the interactive influence of the energy economy within the region itself or between regions. The 0-1 linear programming is used to decompose the material flow matrixes of coal transportation in eight regions of our country into two levels. The two levels of sub-matrices are used to find the maximum two levels of closed coal flows in China from 1998 to 2007. The features presented in time and space are analyzed. The results show that: (1) No major changes have taken place in the short term, whether the first-level closed coal flow or the second-level closed coal flow shows that the resource pattern in China’s region and the demand for coal supply have relative short-term Stability; ② The boundaries of spatial mobility in 1998-2003 are distinct. The first level is the internal flow of the region itself, and the second level is the closed flow of regions. Since 2004, the boundaries of spatial mobility are no longer distinct. According to the spatial characteristics of the first level, the largest closed coal flow in our country shows not only inside the region but also between regions, indicating that the energy economy between regions and regions Contact has been strengthened.