灌木林地，由灌木树种构成，以培育灌木为目标的或乔木生长以外以及专为防护用途，覆盖度大于或等于40℅的林地。包括人工灌木林地和天然灌木林地两类。
由于冬春两季气温的上升加剧了这样的循环，因此，苔原可能正在向灌木林地转变。
Because of this loop, which is promoted by warmer temperatures in winter and spring, well, it looks like the tundra may be turning into shrub land.
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.
结果表明：灌木林地是干旱河谷的景观基质；
The results showed that shrub land was the landscape radix of the dry valley.
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