Based on the system analysis of the regional land use change and benefits,the index system was built for the benefit assessment of regional land use by the power function and harmonic model.The changes of the social effect,economic effect and ecological effect of Aba Tibetan-Qiang autonomous state in recent years were analyzed quantitatively,which was propitious to modulate the decision making for the land exploitation,utilization and management,and provided the reference and basis for the scientific and reasona...
