Effect of LaCl3 on absorptive capacity to formaldehyde of four indoor ornamental plants was studied through fumigating in laboratory.Simultaneously,the indoor ornamental plant,which could significantly enhance the degradation capacity of formaldehyde,was screened out to study thephysiological and biochemical mechanisms of formaldehyde resistance.Our results showed that the ability to absorb formaldehyde of four indoor ornamental plants,which was calculated by per unit leaf area,all enhanced after spraying b...