盆栽植物对室内甲醛空气污染的净化研究进展

摘要

Formaldehyde ( FDH) is a main indoor air pollutant , and it can cause serious hazards to human ’ s physical and mental health.Therefore, it is one of today’s hot research subjects that the air pollutants from construction and decoration materials can be absorbed and removed by potted plants .Many researches showed that the indoor FDH concentration could be reduced effec -tively by many potted plants .The purification of FHD maybe included several aspects , such as assimilation by stems or leaves of potted plants , transformation and metabolism by plant cells , and degradation by the rhizospheric microorganisms .There maybe three ways for potted plants to react with FDH pollution:the first one had high absorption but weak resistance to FDH damage , showing obvious hurt external morphology;the second one had weak absorption but strong resistance to FDH damage , revealing normal exter-nal morphology through taking avoidance strategy to protect itself;the third one showed the strongest absorption and transforming a-bility to FDH with more or less hurt responses .The purification mechanism of formaldehyde -polluted indoor air by potted plants still needs for further researches .%甲醛是室内主要的空气污染物，严重影响了人们的身心健康，寻找净化空气污染的高效盆栽植物成为近年来研究的热点。许多研究表明：盆栽植物都能有效地降低室内甲醛的浓度，对甲醛的净化作用可能有通过盆栽植物的茎叶表面吸收、植物细胞转化代谢、根际微生物吸收降解等几个方面。植物对甲醛净化可能存在3种途径或机制：第1种是对甲醛吸收能力强，但抗性弱，外部形态伤害明显；第2种是植物单位干物质吸收甲醛量较少，但采取保护自己的规避策略，保持外部形态的完整；第3种是吸收并转化，这类植物单位干物质甲醛吸收量高，同时外部形态表现基本正常或正常。对盆栽植物净化甲醛空气污染物的机理还需作进一步深入研究。