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本文应用数量地理学方法,从陕北黄土高原黄土地貌实际出发,论证侵蚀地貌形态示量要素间的关系及其对土壤侵蚀面的影响。通过相关分析,发现坡长、沟壑密度与土壤侵蚀面间有良好的线性正相关关系,复相关系数为0.9。建立了土壤侵蚀面与区域侵蚀模数间的回归模型,M=16.98S~(1.51);相关系数 R=0.985。从而进一步证明了土壤侵蚀面概念和计算公式的合理性。
Based on the actual situation of loess landform in the loess plateau of northern Shaanxi, this paper uses quantitative geography method to demonstrate the relationship between the elements of eroded topography and its impact on soil erosion. Through correlation analysis, it was found that slope length, gully density and soil erosion have a good linear positive correlation between the complex correlation coefficient of 0.9. A regression model was established between soil erosion area and regional erosion modulus, M = 16.98S ~ (1.51); correlation coefficient R = 0.985. This further proves the rationality of the concept and formula of soil erosion.