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定点观测研究表明，不同清理方式对迹地的水土流失及更新苗木的成活与生长的影响有很大差异，对未清理、带堆清理和火烧清理作了比较试验。火烧清理方式造成的水土流失与养分流失都大大超过未清理和带堆清理，但坡度小于１６°时，尚不至造成严重的水土流失，坡度大于２３°时，应禁止采用火烧法，这是火烧不利的一面。有利的一面是有助于提高造林成活率和促进更新苗木的生长。不论哪种清理方式，苗木成活率均随坡度的增高而降低。
The fixed-point observation shows that there are great differences in the effects of different cleaning methods on the soil erosion and the survival and growth of the regenerated seedlings, and comparative experiments are conducted on the un-cleaned, the cleaned-up and the cleaned-up fires. Fire and soil erosion caused by clean-up methods greatly reduce the loss of nutrients and ladle without cleaning, but the slope is less than 16 °, it is not yet to cause serious soil erosion, slope is greater than 23 °, the fire should be banned method, which is Unfavorable side of the fire. The positive side is to help increase the survival rate of afforestation and promote the growth of nursery stock. No matter what kind of cleaning methods, seedling survival rate decreases with the slope of the increase.