Based on analysis of the causes and laws of soil erosion in Nan'an District of Chongqing,the vegetation coverage percent,land use type and topography slope degree were selected as the key factors for evaluating the degree of soil loss.After fieldwork and
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魏兴萍 赵纯勇.基于3s技术的土壤侵蚀分析[J].重庆工商大学学报(自然科学版),2005,(6): WEI Xing- ping, ZHAO Chun - yong. Analysis of soil erosion investigation based on 3S technology[J]. Journal of Chongqing Technology and Business University(Natural Science Edition),2005,(6):