半干旱沙区3种优势固沙灌木生物量分配及其生态学意义
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Biomass allocation and its ecological significance of three dominant sand-fixing shrubs in the semi-arid desert area
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图4. 3种优势固沙灌木NAB /AGB和NAB/OBA |
Fig.4. The proportion of new biomass and ratio of aboveground biomass to old shoot biomass of the three dominant sand-fixing shrubs |
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