植物地上部重金属含量与植物地上部生物量的相关分析表明，植物对重金属的积累量与植物地上部生物量的大小无关。
The analysis of the correlation between heavy metal content and biomass of aboveground parts indicated that the heavy metal accumulation was not correlated with the biomass.
根茎型植物的根生物量与地上生物量的比值为0.2，显著高于须根型湿地植物（0.1）。
The ratio of root biomass to shoot biomass of rhizomatic root plants was 0.2, which was higher than that of fibril root plants(0.1).
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