| Nowadays,people are living in the third pollution period-"indoor chemical pollution period",with indoor formaldehyde chemical pollution being a recognized indoor environmental problem.The indoor formaldehyde chemical pollution has brought bring serious health threats to people,so that to control and remove it is badly urgent.Because of its own special structure and physiological and biochemical functions,indoor anti-yin foliage plants is blessed with effects on efficient,lasting purification of formaldehyde pollution.Through the degradation of green plants,removal of formaldehyde pollution has become the preferred means of ecological management.The present study chose seven common indoor natural foliage plants as experimental subjects.The three repetitive experiments were carried out and differentiated groups randomly.The experimental results were carried out under four different concentrations of formaldehyde.The effects of seven kinds of indoor foliage plants on the tolerance of formaldehyde pollution were studied from the perspectives of indoor plant disease and some physiological and biochemical indexes.Through the two aspects of plant purification rate and formaldehyde purification per unit area,plant purification ability was studied.Finally,combined with the consideration of indoor plant ecological characteristics and configuration principles,the study put forward three kinds of indoor ecological restoration mode.The study results showed that:1.indoor resistance to foliage plants on the formaldehyde pollution resistance tostress:(1)Under the stress of 120mg/m~3 formaldehyde,different plants showed varying degrees of visible injury symptoms,and their resistance to chemical pollution was different.The results showed that the three kinds of plants had the most obvious symptoms and the most serious damage,and the resistance was weak.The aloe vera did not show obvious symptoms,displaying only light damage and strong resistance.(2)The changes of experimental plant species,formaldehyde concentration and the interaction between the two species showed significant differences in the eight physiological and biochemical indexes of seven experimental plants.(3)MDA content,soluble protein content,O2.-production rate,POD and APX activity of seven kinds of experimental plants showed a gradual increasing trend under 3mg/m~3,6mg/m~3 and 9mg/m~3 different formaldehyde concentrations.Chlorophyll content,soluble,the content of sugar and the pH value of leaf liquor showed a decreasing trend.(4)Comprehensive analysis and evaluation of the experimental plant symptoms and physiological and biochemical indicators of changes in the indoor formaldehyde pollution resistance to stress the strongest experimental plants is the city of aloe,bamboo after the second,white reticulata,Red reticulate grass three kinds of plants the weakest.2.Indoor anti-yin foliage plants on the purification of formaldehyde pollution:(1)The effect of the interaction between the plant species,the concentration of formaldehyde and the interaction between the two groups showed a significant difference in plant purification rate and unit leaf area purification.(2)With the experimental plant from the formaldehyde pollution concentration from 3mg/m~3,6mg/m~3,9mg/m~3 gradually increased,the experimental plant on the formaldehyde purification rate correspondingly reduced.Among them,the purification rate was the highest when the formaldehyde stress of 3mg/m~3 and 6mg/m~3 was the highest,and the purification rate was the highest at 9mg/m~3 formaldehyde stress.(3)With the increase of the concentration of formaldehyde in the experimentalplants from 3mg/m~3,6mg/m~3,9mg/m~3,the indoor leaf area of formaldehyde increased gradually,and the aloe vera The net amount of leaf area per unit was the highest under three kinds of stress.(4)Based on the comprehensive analysis of the decontamination values of the experimental plants and the literal function of the unit leaf area,the membership value of the leaves was the largest,and the plants with the strongest pollutants were purified.3.According to the ecological characteristics and configuration principle of indoor plants,three kinds of ecological restoration and distribution models of indoor plant purification,beautification and health care were put forward. |
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