基于分形理论的矿区生态系统稳定性评价

引入非线性理论对矿区生态系统的稳定性进行研究.通过相空间重构的方法确定各混沌吸引子的关联维数,对矿区生态系统的稳定性进行评价.研究表明:焦作矿区矿产资源保有指数、矿产资源回收指数和矿产资源综合利用指数3个指标的分维值都较小,说明自然资源支持度的脆弱性是造成矿区生态系统不稳定性的主要原因.

Mine Eco-system Stability Assessment Based on Fractal Theory

The mine eco-system is the complex nonlinear dynamic system coupled with resources, environment and economic and social factors. The mine ecosystem stability is the fundamental characteristic of the ecosystem health. Therefore, the theory of nonlinear is introduced to research the stability of the ecosystem. The correlation dimension of the chaotic attractor is determined through the phase space reconstruction method to evaluate the stability of the ecosystem. Study shows that, for Jiaozuo mine mineral resources, the tenure index, comprehensive utilization index of mineral resources and the recovery index of mineral resources have smaller dimensions. The fragile supporting ability of natural resources is the main reason that causes the ecosystem instability.