关键词: 复垦, 突变理论, VV土壤质量评价, 突变级数法

Abstract: The research on reclamation soil quality recovery’s evaluation mainly comes from soil quality evaluation research. Traditional soil quality evaluation methods mainly include the principal component analysis method，the hierarchy analytic method，the fuzzy evaluation method，the entropy weight method，mutation progression method，and so on. These methods all are necessary to determine the weight and do large amount of calculation. The mutation progression method resulted from catastrophe theory and fuzzy mathematics and put forward by the French mathematical James's Rene Thom is first applied to evaluate the soil quality by the author. This is the first innovation point. The Zhangji Reclamation Land，Anhui Province，China in a mining land is taken as instance for soil quality recovery evaluation. According to the reclamation region soil’s features，the hierarchical evaluation index system was built. The appropriate state variables and control variables were found out by catastrophe theory’s basic model. The results show that the values from the transformed mutations progression method and the traditional methods （principal component analysis） are basically identical. The soil quality grows with the reclamation year increase. This demonstrates that the mutation progression method applied to soil quality assessment is reasonable. The mutation progression method has two advantages; one is not necessary to determine the weight，the other is only necessary to do a few calculations. Compared with the traditional method，the mutation progression method reduces the human subjectivity and is simple for its application. The results proved that this method has a certain generality. This is the second innovation point for this article.

Key words: reclamation soil, catastrophe theory, evaluation of soil quality, catastrophe progression method