The lack of urban sustainability is a widespread deficiency in urban agglomerations. To achieve adequate land use, we present a methodology that allows for: 1) the identification of the impacts caused by urban expansion since 1956 to the present in Salamanca (Spain); and 2) the promotion of a more sustainable future in urban development. A multi-temporal assessment of land use was made by remote sensing, while sustainability criteria were analyzed using the multicriteria analysis (MCA) with Geographical Information Systems (GIS). In addition, we established recommendations for soil carbon management in semi-arid ecosystem soils that contribute to climate change mitigation. The results show an increase of the urbanized area from 3.8% to 22.3% in the studied period, identifying up to 15% of buildings in zones with some type of restriction. In 71% of the cases, urbanization caused the sealing of productive agricultural soils (2519 Ha), almost 20% of which were of the highest quality. In last few decades, an excessive increase of built-up areas in comparison to population dynamics was identified, which causes unnecessary soil sealing that affects the food production and the capacity to mitigate climate change by managing the carbon cycle in the soil.

中文翻译：

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使用Landsat影像和土壤碳管理作为缓解气候变化的工具，对与萨拉曼卡（西班牙）城市扩展相关的土壤封闭和土地利用变化进行多时相分析

缺乏城市可持续性是城市群普遍存在的缺陷。为了获得足够的土地利用，我们提出了一种方法，该方法可以：1）识别1956年以来城市扩展对西班牙萨拉曼卡造成的影响；2）在城市发展中促进更可持续的未来。通过遥感对土地利用进行了多时相评估，同时使用多标准分析（MCA）和地理信息系统（GIS）分析了可持续性标准。此外，我们为有助于减缓气候变化的半干旱生态系统土壤中的土壤碳管理建立了建议。结果表明，在研究期间，城市化区域的面积从3.8％增加到22.3％，在受某种类型限制的区域中，最多识别出15％的建筑物。在71％的案例中，城市化导致生产性农业土壤（2519公顷）被封闭，其中近20％的土壤质量最高。在过去的几十年中，与人口动态相比，已经发现了建筑面积的过度增加，这导致不必要的土壤封闭，从而影响了粮食生产以及通过管理土壤中的碳循环来缓解气候变化的能力。