【摘要】 木本植物通过树木固定、挥发和吸收重金属污染物等方式起到对土壤重金属的修复作用,有处理量大、受气候影响微弱等优点,主要表现在对重金属的耐受力和吸收性能等方面。本文概括了木本植物修复重金属污染土壤的研究进展,主要包括修复树种的筛选以及修复技术的综合运用,分析了木本植物对重金属的耐受性和吸收蓄积能力的差异,探讨了如何根据现有技术和条件利用木本植物的优势,提高其对重金属的耐受性和蓄积能力,并针对现阶段研究存在的不足提出建议,包括重点研究方向、资源的回收利用、技术的引进和综合运用,以期为修复树种的筛选、提高木本植物对重金属的耐受力和吸收能力提供理论依据。更多还原

【Abstract】 Woody plants play a role in remediation of heavy metal pollution in soil mainly by fixing,evaporating and absorbing heavy metal pollutants,which can treat large amounts of contaminants and is less exposed to the risks of climate influence.This paper summarized the research progress of repairing heavy metal remediation in by woody plants contaminated soil,including the selection of repairing tree species and the comprehensive application of repair technology,analyzed the differences of the tolerance and absorptive capacity of woody plants to heavy metals and probed into how to utilize the advantages of woody plants to improve its resistance and accumulation ability of heavy metals by the existing technology and conditions.Besides,this paper put forward suggestions according to the shortcomings of relevant researches at present,which involved the core research directions,the recycling and utilization of resources,the introduction and comprehensive application of technology,so as to provide theoretical basis for repairing the screening of tree species and improving the tolerance and absorptive capacity of woody plants to heavy metals.更多还原