Department of Geography, University of the Aegean, Lofos Panepistimiou, Mytilene, 81100, Greece.
Environ Monit Assess. 2010 Feb;161(1-4):369-87. doi: 10.1007/s10661-009-0754-7. Epub 2009 Mar 4.
Soil erosion is considered to be one of the greatest environmental problems of sub-Saharan Africa. This paper investigates the advantages and disadvantages of modelling soil erosion at the continental scale and suggests an operational methodology for mapping and quantifying 10-daily water runoff and soil erosion over this scale using remote sensing data in a geographical information system framework. An attempt is made to compare the estimates of this study with general data on the severity of soil erosion over Africa and with measured rates of soil loss at different locations over the continent. The results show that the measured and estimated rates of erosion are in some areas very similar and in general within the same order of magnitude. The importance and the potential of using the soil erosion estimates with simple models and easily accessible free data for various continental-scale environmental applications are also demonstrated.
土壤侵蚀被认为是撒哈拉以南非洲面临的最大环境问题之一。本文探讨了在大陆尺度上进行土壤侵蚀建模的优缺点，并提出了一种利用遥感数据在地理信息系统框架下对该尺度上的 10 天径流水和土壤侵蚀进行制图和量化的实用方法。本文试图将本研究的估算值与非洲土壤侵蚀严重程度的一般数据以及非洲大陆不同地点的实测土壤流失率进行比较。结果表明，在某些地区，实测和估算的侵蚀率非常相似，总体上处于同一数量级。本文还展示了使用简单模型和易于获取的免费数据进行各种大陆尺度环境应用的土壤侵蚀估算的重要性和潜力。
