Natural regeneration ability of woodland-steppe in Kerqin Sandy land were very strong. There were 60 000 elm seedlings/hm~2 in elm woodland-steppe.

　
英 美
  • 科爾沁沙地天然榆樹(shù)疏林草原的自然更新能力較強,每年可以產(chǎn)生大量的榆樹(shù)幼苗,疏林地內每個(gè)小居群內的幼苗數以1株~10株最多,每公頃疏林地有幼苗6萬(wàn)多株,折合6株/m2,為榆樹(shù)疏林草原植被的恢復提供了可能。
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