Estimates for Rehabilitation Potential of Dust Sources in the Agro-pastoral Ecotone in North China

摘要

The Fuzzy Comprehensive Evaluation has proved in quantitive assessment. According to the situation of dust sources in the agro-pastoral ecotone in north China, the evaluation index of rehabilitation potential for dust sources was set up which adopts the proportion criteria algorithm and experts' experiences, index evaluation system was established to quantify the evaluation index. The method of analytical hierarchy process (AHP) was used to obtain the weighing of evaluating index as to calculate the rehabilitation potential. The evaluation standard was set up according to the comparative result between the sand source's situation and model's result. And then use evaluation standard system to separate the grade of potential. Finally fuzzy selection rule was used to separate the potential further. Finally the rehabilitation potential was displayed with different color which shows the different rehabilitation potential in the GIS system for the rehabilitation of dust sources the agro-pastoral ecotone in north China.