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在土壤普查结果与实地采样的基础上 ,应用EPIC模型计算出南安市不同土壤的K值 ,并研究了土壤的可蚀性特征及K值图的编制方法。研究表明 :研究区土壤类型表层平均K值为0 184～0 371;不同土壤层次K值明显不同 ,表层抗蚀性较强 ;不同土地利用方式其土壤可蚀性不同 ,密林地抗蚀性强 ,裸地最弱 ;随着土壤侵蚀的加剧 ,土壤可蚀性K值有增加的趋势 ;土壤K值图制作对水土流失定量遥感监测有重要意义
Based on the results of soil census and on-the-spot sampling, the K value of different soils in Nan’an City was calculated by EPIC model, and the erosivity characteristics of soil and the compilation method of K value map were studied. The results showed that the average K value of soil surface layer was 0 184 ~ 0 371 in the study area. The K values of different soil layers were obviously different, and the surface corrosion resistance was stronger. The soil erodibility was different in different land use types, , And bare soil was the weakest. Along with the aggravation of soil erosion, the K value of soil erodibility tends to increase. The production of soil K value map is of great significance for the quantitative remote sensing monitoring of soil erosion