The accuracy of land vegetative cover index rested with the accuracy of image classification, but had no direct relations with total classification accuracy.
土地植被覆盖指数的准确度取决于图像分类准确度，但与分类总准确度没有直接关系。
The result fo Principal Component Analysis (PCA) shows that the vegetative characters are the major characters in morphological classification of C.
主成分分析结果表明，营养器官是狗牙根形态分类的重要指标。
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