【摘要】 利用两期不同年代航空遥感信息源,编制两期土壤侵蚀类型现状图,经过叠合比较,建立动态分类系统,勾绘编制的动态图,能够准确、直观地反映出两个年代,特定区域土壤侵蚀类型空间分布的变化规律、趋势和数量特征,为评价土壤侵蚀,水土保持规划和综合治理决策提供科学依据。结果表明,这种方法合理可行,速度快,精度高。更多还原

【Abstract】 Describes dynamic maps of soil erosion types compiled by using remote sensing informations of different years in two periods. The dynamic maps drew reflect directly, accurately and vividly the variation regularity of soil erosion spatial distribution, its trend and quantitative features of particular region in two periods. They provide a feasible, quick and accurate scientific base for soil erosion evaluation, and soil and water conservation program and comprehensive control decision making.更多还原