Cultivated land suitability evaluation based on GIS and ELECTRE TRI algorithm
Liu Xua · Cehui kexue · 2015
In view of the problem that inaccurate spatial data attribute values impact the overall evaluation factor order,this paper put forward a cultivated land suitability evaluation method based on ELECTRE TRI algorithm with GIS.It could offset the impact of inaccurate spatial data attribute values for the overall evaluation factor ordering,making the evaluation results more objective and real.In two classification methods of ELECTRE TRI algorithm,the threshold comparison sequence of pessimistic classification was from high to low,so that it was easy to cause the attribute value to be unaccurate,therefore affected the sorting result.Optimistic classification could avoid the similar situation.And the more overlapping evaluation units showed that the evaluation results had certain rationality when these were closer.The results showed that this method could provide the basis for the cultivated land use structure adjustment,scientific planning the basic farmland protection area and promoting the land differentiated management.