Connotative land degradation mapping: A knowledge-based approach to land degradation assessment
Connotative land degradation mapping: A knowledge-based approach to land degradation assessment
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DOI：
10.1016/j.envsoft.2012.07.009
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发表时间：
2013-02
期刊：
影响因子：
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通讯作者：
L. Bojórquez-Tapia;G. Cruz-Bello;Laura Luna-González
中科院分区：
文献类型：
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作者：
L. Bojórquez-Tapia;G. Cruz-Bello;Laura Luna-González
土地退化测绘是一项解决问题的任务，目的是为分配预算和材料以应对土地资源的退化提供信息。通常，这需要在地理信息系统中实施一套指标，以评估一个领土上土地退化的严重程度。然而，事实证明，这些指标的选择在实践中具有挑战性，而且这种选择往往反映了一个关于土地退化的特定的、有限的视角。由于土地退化本质上是复杂的，涉及许多机构和个人的决策，土地退化地图应被用作一种学习工具，管理人员、专家和利益攸关方可以通过它在更广泛的语义背景下重新审查他们的观点。在本文中，我们介绍了一个分析框架，称为内涵式土地退化图，其目的是描述CLDM实施(1)地理信息系统和多准则决策分析(GIS-MCDA)和(2)地理可视化的多种相互作用的驱动因素和影响的含义。通过对墨西哥中部两个城市分水岭的案例研究，说明了这种方法。结果表明，研究区土地退化的主要驱动因素与自然过程有关，人类活动加剧了自然过程。土地退化综合管理的成果使人们能够以与决策者相关的方式更好地沟通土地退化问题和关切。
Land degradation mapping is a problem-solving task that aims to provide information for allocating budgets and materials to counter the deterioration of land resources. Typically, it entails the implementation of a set of indicators in a GIS to appraise the severity of land degradation across a territory. Nevertheless, the selection of these indicators has proved to be challenging in practice and often this selection reflects one particular and thus limited perspective of land degradation. Because land degradation is intrinsically complex and involves decisions by many agencies and individuals, land degradation mapping should be used as a learning tool through which managers, experts and stakeholders can re-examine their views within a wider semantic context. In this paper, we introduce an analytical framework, called Connotative Land Degradation Mapping, which aims to depict the meaning of a multiplicity of interacting drivers and effects The CLDM entails the implementation of (1) geographic information systems and multicriteria decision analysis (GIS-MCDA), and (2) geo-visualization. The approach is illustrated through a case study of two urban watersheds in central Mexico. Results showed that the main land degradation drivers in the study area were related to natural processes, which were exacerbated by human activities. The output of the CLDM enabled a better communication of the land degradation issues and concerns in a way relevant for policymakers.