The results showed that the density and coverage of shrubs growing in the intervale of sand fixing region were biggest , but those of herbs were smallest . in contrast , the density and coverage of shrubs growing in the lee slope of dune were smallest , but those of herbs were biggest 不同地形条件下，丘间低地灌木植物密度、盖度最大，草本植物的密度和盖度却最小;背风坡灌木植物密度、盖度最小，而草本植物的密度、盖度却最大。
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