Mertens Jan, Luyssaert Sebastiaan, Verheyen Kris
Laboratory of Forestry, Department of Forest and Water Management, Ghent University, Geraardsbergsesteenweg 267, B-9090 Gontrode, Belgium.
Environ Pollut. 2005 Nov;138(1):1-4. doi: 10.1016/j.envpol.2005.01.002.
Some plant species accumulate trace metals from the soil in their aboveground biomass. Therefore, some scientists have concluded that these species are suitable for biomonitoring trace metal concentrations in the soil or for removing excessive trace metals from the soil by means of phytoextraction. A significant correlation between the chemical composition of foliage and soil is not a sufficient condition for using the chemical composition of foliage as a biomonitor for the quality of the soil. The chemical composition of foliage can, however, provide additional information to the traditional soil samples. The phytoextraction potential of a plant species cannot solely be evaluated on the basis of the trace metal concentrations in the plant and soil tissue. Data on the depth of the rooting zone, the density of the soil and the harvestable biomass should also be taken into account. Although plant tissue analysis is a useful tool in a wide range of studies and applications, trace metal concentrations in plant tissue cannot be viewed in isolation. Instead it should be analysed and interpreted in relation to other information such as soil concentrations, rooted zone, biomass production, etc.
一些植物物种会在其地上生物量中积累土壤中的微量金属。因此，一些科学家得出结论，这些物种适用于生物监测土壤中的微量金属浓度，或通过植物提取从土壤中去除过量的微量金属。叶片化学成分与土壤之间的显著相关性并非将叶片化学成分用作土壤质量生物监测指标的充分条件。然而，叶片的化学成分可以为传统土壤样本提供额外信息。植物物种的植物提取潜力不能仅基于植物和土壤组织中的微量金属浓度来评估。还应考虑生根区深度、土壤密度和可收获生物量的数据。尽管植物组织分析在广泛的研究和应用中是一种有用的工具，但不能孤立地看待植物组织中的微量金属浓度。相反，应该结合其他信息，如土壤浓度、生根区、生物量生产等进行分析和解释。
