Abstract:
In this study, the authors analyze and evaluate different reclamation systems by the investment-benefit in Heidaigou opencast coal mine area, and the reclamation system including the combination vegetation of herb, shrub and tree, herb and shrub mixed vegetation, shrub vegetation, herb vegetation and farming vegetation.The results show that:the investment of grass vegetation reclamation system is lowest among the 5 reclamation systems, and the combination vegetation of herb, shrub and tree, grass and shrub mixed vegetation was much higher compared with other reclamation systems; the different reclamation systems show different characteristics by investment-benefit analysis and evaluation; comprehensive analysis of ecological effects, investment costs, land conditions, biological value and financial capacity, herb and shrub vegetation reclamation system show advantages compared with other reclamation systems, and farming vegetation reclamation system show disadvantages; considering the effect of reclamation system on available arable land, farming vegetation reclamation system show obvious advantages by increasing the arable land area; the combination vegetation of herb, shrub and tree reclamation system show the best beneficial in improving stability of the local ecosystem.Therefore, the advantages and disadvantages of different reclamation systems are obvious, and need to be according to the actual situation.