Evaluation model for revegetation potentiality of sand dust sources in the agro-pastoral ecotone in Northern China

The revegetation progress was slow and there are no methods to evaluate revegetation potentiality of sand sources in the farming-pastoral ecotone in Northern China. This paper describes a evaluation model for revegetation potentiality of sand-sources from the farming-pastoral ecotone in Northern China. First of all, Proportion Criteria is used to assess the values for the factors such as soil quality, climate, landform, vegetation and human activities of the region, which are involved in this model. Improved analytic hierarchy process(AHP) was developed as the primary algorithm in this model. Finally, according to Subordinate Function, the grade of the revegetation potentiality was given. The result shows that this model can be used to identify the difficulties and the priority of rehabilitation for different regions.