从农业、生态以及建设用地三方面入手建立了土地适宜性评价指标体系,采用层次分析法(AHP)确定各指标权重,运用RS和GIS技术及单因子评价法、综合指数评价法等方法建立各级指标的评价模型,并采用"三维魔方"矩阵组合法对适宜性评价结果进行综合分析,最后基于网格系统实现评价结果的可视化空间表达.以山西省汾阳市为例,对所建立的模型与相应的技术方法进行验证性分析.结果表明:该市土地划分为生态林业用地区、生态农业用地区、基本农田保护区、一般农业生产区和经济发展建设区5个区域,占地面积分别为345.26、219.50、396.52、80.52、136.68 km2,占全市比例为29.3％ 、18.6％ 、33.7％ 、6.8％ 、11.6％.结果与该县实际情况基本吻合,表明所建立的指标体系与模型是可行的,为土地资源的合理开发利用提供了科学的依据,具有一定的理论价值和现实意义.%The land suitability evaluation index system was established from three aspects :the agricultural land ,the ecological land and the construction land .Applying analytic hierarchy process (AHP) to obtain the index weights ;By us-ing RS and GIS technology and the approaches of single-factor evaluation , comprehensive index evaluation and other methods ,the land suitability evaluation index model was established .A comprehensive analysis of suitability evaluation results was made by the"three-dimensional cube"matrix combination method .Finally ,the visualization of spatial ex-pression of the evaluation results was made possible .Taking Fenyang for example ,the established model and the techni-cal method was verified .The results were consistent with the actual situation of the city which showed that the established index systems and models were feasible .The result shows that the land is divided into five zones ,they are eco-forestal area ,eco-agricultural area ,prime farmland protection area ,ordinary agricultural area and economic development area , covering an area of 345 .26 ,219 .50 ,396 .52 ,80 .52 km2 and 136 .68 km2 respectively ,and accounting for 29 .3％ , 18 .6％ ,33 .7％ ,6 .8％ and 11 .6％ of total area of the city respectively .The results were agreed well with the actual situation of the city ,which showed that the established index systems and models were feasible .The results providing a scientific basis for reasonable exploitation and utilization of the land resources and show certain theoretical value and practical significance .
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