基于OWA的大理市土地生态安全评价研究

从自然生态环境角度出发,从自然因子、生态环境因子、景观因子3个层面选取16项评价指标建立大理市土地生态安全评价体系,并运用IDRISI软件中的MCE模块进行有序加权平均算子（OWA）多准则决策评价,得到不同决策风险系数下的大理市土地生态安全评价结果。结果显示,由于决策者风险态度不同,得到土地生态安全评价结果差异较大,在实际应用中,必须结合研究区的实际情况以及规划的目的选择不同的风险系数进行评价,才能得到更加真实有效的结果。

Evaluation of Land Ecological Security in Dali City Based on OWA

Starting from the angle of natural ecological environment, this article selects 16 indicators to establish the land ecological security evaluation system in Dali City from three aspects of natural factors, environmental factors, landscape factors, and uses the MCE module of IDRISI software of OWA multi criteria decision making evaluation of Dali land ecological security evaluation results of different decision under risk coefficient. The results showed that the different risk attitudes of decision makers, difference of land ecological security evaluation results. In practical application, the study area must be combined with the actual situation as well as planning to select different risk coefficient evaluation, to get a more realistic and effective results. As a whole, the land ecological security in Dali City is getting better and better as the decision risk factor increases.