基于RWEQ的土壤粉砂和碳酸钙与土壤可蚀性关系研究

RWEQ Model Based Relationship between Sand Content or CaCO3 Content and Soil Erodibility

摘要: 我国是世界上土壤侵蚀面积最大的国家之一，因此我国学者对于土壤侵蚀进行了大量的研究。本文基于修正风蚀模型(RWEQ)对土壤粉砂含量、土壤碳酸钙含量与土壤可蚀性因子之间的关系进行研究。本文运用赋值法建立了一个由2330组数据构成的数据集，绘制其特征图，并对数据做相关性分析。结果表明：1) 土壤粉砂含量与土壤可蚀性因子呈正相关，说明土壤粉砂含量越大，土壤抗侵蚀能力越差；2) 土壤粉砂含量越高，土壤可蚀性因子增长速度越快，说明土壤粉砂含量越大，土壤抗侵蚀能力下降的就越快；3) 土壤碳酸钙含量与土壤可蚀性因子成反比，说明土壤中碳酸钙含量越大，土壤抗侵蚀能力越强。通过以上结论，本文在日后的风蚀预测上给出相应的启发。

Abstract: Our country is one of the countries with the largest soil erosion area in the world, so the scholars in our country have done a lot of research on soil erosion. Based on the modified wind erosion model (RWEQ), the relationship between soil silt content, soil calcium carbonate content and soil erodibility factors was studied in this paper. In this paper, a data set composed of 2330 sets of data is established by the method of assignment, and its characteristic map is drawn, and the correlation analysis of the data is made. The results showed that: 1) the content of soil silty sand was positively correlated with soil erodibility factors, indicating that the higher the content of soil silty sand, the worse the soil anti-erodibility. 2) the higher the content of soil silty sand, the faster the growth rate of soil erodibility factors, indicating that the higher the content of soil silty sand, the faster the decline of soil anti-erodibility. 3) the content of soil calcium carbonate was inversely proportional to soil erodibility factors, indicating that the higher the content of soil calcium carbonate, the stronger the soil anti-erodibility. Based on the above conclusions, this paper gives the corresponding enlightenment in the future wind erosion prediction.