摘要
应用数量化理论Ⅱ建立土壤侵蚀强度分级的判别模型，具有良好的判别分级效果。该模型对参与建模的８８个样本的回判结果是：强度侵蚀组、中度侵蚀组、轻度侵蚀组和无明显侵蚀组的准判率分别为１００％，９１．３％，８３．３％和９３．８％，准判率高达９２．０％；未参与建模的１０个样本的判别分级准确率也高达９０％。
The model set up with quantification theory Ⅱhad the good results in differentiatingthe grades of soil erosion intensity When the model was used in distinguishing the soil erosion in-tensity of 88 samples participating in setting up the model,its differentiating accuracy ratios forintensive,median,slight and insignificant erosion groups were 100%,91.3%,83.3% and 93.8% respectively;total accuracy ratio was 92%. When it was used in differentiating the soilerosion intensity of 10 samples without participating in setting up the model,its accuracy degreewas 90%.
