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抗蚀性是与抗冲性既有联系，又有区别的一个衡量土壤抗侵蚀能力的重要指标。在黄土高原的两大侵蚀类型区——高塬沟壑区、丘陵沟壑区，分布着数百万公顷沙棘人工林，其抗侵蚀能力愈来愈受关注。要正确评价沙棘人工林的抗蚀功能，一个科学、有效、便利的评价体系是不可缺少的。在反映土壤抗蚀性的纷杂繁多的指标中，经过主成分分析，筛选出了符合不同精度要求的“最佳指标”、“最佳２指标”、“最佳３指标”等评价体系。
Corrosion resistance is an important indicator of soil erosion resistance, which is related to both impact resistance and erosion resistance. In the two major erosion-type areas of the Loess Plateau-the highland gully and the hilly-gullied hilly areas, millions of hectares of seabuckthorn plantations are distributed, and their anti-erosion ability is gaining more and more attention. To correctly evaluate the anti-corrosion function of Hippophae rhamnoides plantations, a scientific, effective and convenient evaluation system is indispensable. Among the various indexes that reflect the soil erosion resistance, the evaluation system of “best index”, “best 2 index” and “best 3 index” is selected through the principal component analysis according to different precision requirements.