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首页> 外文会议>The 1st international conference on indicators for land rehabilitation and sustainable development >Land Suitability Assessment of Shahrekord University Enclosure Using GIS and Multi-criteria Evaluation Techniques
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Land Suitability Assessment of Shahrekord University Enclosure Using GIS and Multi-criteria Evaluation Techniques

机译：基于GIS和多标准评价技术的Shahrekord大学圈地土地适宜性评价。

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Geographic Information Systems have unique strength for modeling, logical and algebraic operations which are required for land evaluation. To evaluate a certain land for a specific land use one needs a technique to study several criteria which is called modeling or multi-criteria evaluation (MCE).In MCE decision making and evaluation are based on the criteria. The criteria fire selected and combined according to the roles of MCE. The objective of this study was using MCE techniques for determination the suitability of shahrekord University campus' soils for irrigated wheat. The GIS database of the area was constructed using climatic,morphometric and soil spatial and attributed data.By consulting soil and agronomy experts involved criteria were determined and ranked using Satty's model (1980). A pairwise comparison matrix was constructed and the eriteria's weights were determined. The calculated consistency index was in range and acceptable. Several linear funetious were applied for standardization of values of thematic maps or criteria.By calculating the weights and using weighted linear combination(WLC) approach a suitability map for irrigated wheat was prepared. The resulted suitability map is continuous and classification of this map needs expert knowledge. to evaluate MCE map we compared it with the suitability maps derived from simple or parametric approaches. The results indicate that soil depth and gravel content are major limiting factors and that high ranking areas on MCE map mostly correspond to moderately suitable areas.
机译：地理信息系统具有土地评估所需的建模，逻辑和代数运算的独特优势。为了评估特定土地的特定土地用途，需要一种研究几种标准的技术，称为建模或多标准评估（MCE）。在MCE中，决策和评估基于这些标准。根据MCE的角色选择并组合该标准。这项研究的目的是使用MCE技术确定Shahrekord大学校园土壤是否适合灌溉小麦。该地区的GIS数据库是使用气候，形态学和土壤空间及属性数据构建的。通过咨询土壤和农学专家，使用Satty模型（1980年）确定了相关标准并对其进行了排名。构建成对的比较矩阵，并确定检体的权重。计算出的一致性指数在范围内并且可以接受。应用几种线性函数对专题图或标准值进行标准化。通过计算权重并使用加权线性组合（WLC）方法，绘制了适合灌溉小麦的图。生成的适用性图是连续的，并且此图的分类需要专业知识。为了评估MCE图，我们将其与从简单或参数方法得出的适用性图进行了比较。结果表明，土壤深度和砾石含量是主要限制因素，MCE地图上的高等级区域大部分对应于中等适宜区域。

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