The pattern of multi-layer grey situation decision in intensive land use evaluation for towns

Based on the uncertainty of intensive land use evaluation, using the grey system theory, the pattern of multilayers grey situation decision in intensive land use evaluation for towns is presented in this paper. At first, according to the first-layer evaluation indexes, we establish the grey decision situation, and compute the weighted grey decision situation of indexes of the first layer´s unit system, construct the second layer evaluation index´s grey decision situation of unit system. Secondly, we compute the weighted grey decision situation of indexes of the second layer´s unit system, and construct grey decision situation of the second layer´s unit system. In the same way, repeating the above processes, the top layer´s weighted grey decision situation of unit system is gained. According to the contained information of the top layer´s grey decision situation, we determine the type and sequence of evaluation samples. The applied example shows that the model presented in this paper is valid.