四种灌木林地土壤的物理性状明显优于荒坡地。
The soil physical properties of the bush forestlands are better than barren slope obviously.
一旦扎根土壤，灌木林地就会生长茂盛，特别是在北极地区，因为北极地区的灌木丛比其他植物更善于利用土壤中的营养成分。
Once is established, shrubland thrives, particularly in the Arctic, because Arctic shrubs are good at taking advantage of increased nutrients in the soil, better than other Arctic plants.
各灌木林地不同土壤层内根系的生物量也存在一定的差异。
The root biomass in different soil layers also had certain discrepancy even in each bush forestland.
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