中文摘要：

针对不同尺度开展土地利用与土壤侵蚀的综合研究是自然地理学研究的前沿领域和热点问题。多尺度土壤侵蚀评价指数作为新近提出的土壤侵蚀模型，在跨尺度土地利用与土壤侵蚀的研究中具有良好应用前景。本文基于多尺度土壤侵蚀评价指数计算公式及其因子内涵，应用尺度转换的思想，阐述了降雨侵蚀力、土壤可蚀性、作物覆盖与管理因子、地形因子等不同评价因子在坡面、小流域、流域不同尺度上的计算方法与GIS实现技术，以期服务于多尺度土地利用与土壤侵蚀研究的深入和多尺度土壤侵蚀评价指数的发展。

英文摘要：

Exploring the relationships between land use and soil erosion at different scales is a frontier research field and a hot spot topic in contemporary physical geography. As a new soil erosion model, the multiscale soil loss evaluation index （SL） has good prospects for analyzing the relationships between land use and soil erosion at multiple scales. Based on the SL equations and SL-factor meanings at different scales, this paper explains the detailed methods and GIS techniques for SL and SL-factor calculation at slope scale, small watershed scale and watershed scale. The SL-factor include rainfall erosivity factor, soil erodibility factor, topographic factor and cover/ management factor. And the GIS techniques include kriging interception, field calculation, raster calculation, expanding zones, and so on. It is expected that the methods and GIS techniques of SL calculation will be helpful for SL development and the profound research of land use and soil erosion at multiple scales.