Study On Major Ecological Benefits Of Seven Species Of Indoor Ornamentals

7 species of common ornamental plants were tested indoor.On the basis of the studyof dynamic light distribution,temperature and humidity of air indoor, 3 species of indoor light environments were selected.Under the different environments, the diurnal change of photosynthesis rate and transpiration were measured to evaluate the ability of carbon fixation and oxygen release,transpired water release,absorbed caloric of different plants by Li-6400 portable photosynthesis system,the ability of volatile secretion bacteriostasis was studied by method of indoor dipping in water,and the results are as follows:1.The effect of 7 species indoor ornamentals on carbon fixation and oxygen release. In the first environment, which equals to 60% full-exposure ,the amount of oxygen release ranged 3.50-4.69g·m^-2·d^-1,and the amount of carbon fixation ranged 2.55-3.41g·m^-2·d^-1.Aong 7 species plants, Brassaia actinophylla marked the first,and Guzmania lingulata the least. In the second environment, which equals to 20% full-exposure,the amount of oxygen release ranged 2.75-3.46 g·m^-2·d^-1,and the amount of carbon fixation ranged 2.00-2.52g·m^-2·d^-1.Among 7 species plants, Spathiphyllum floribundum marked the first, and Clivia miniata the least.In the third environment, which equals to 8% full-exposure,all the plants can grow well, the amount of oxygen release ranged 1.41-1.89g·m^-2·d^-1,and the amount of carbon fixation ranged 1.03-1.37g·m^-2·d^-1.Aong 7 species plants, Monstera deliciosa marked the first,and Clivia miniata the least.2. The effect of 7 species indoor ornamentals on transpired water release and absorbed caloric: In the first environment, which equals to 60% full-exposure,the amount of transpired water release ranged 219.02-762.05g·m^-2·d^-1,and the amount of absorbed caloric ranged 534.41-1859.40KJ·m^-2·d^-1.Aong 7 species plants, Syngonium podophyllum marked the first,and Guzmania lingulata the least.In the second environment, which equals to 20% full-exposure,the amount of transpired water release ranged 154.87-626.62g·m^-2·d^-1,and the amount of absorbed caloric ranged 377.88-1529.95KJ·m^-2·d^-1.Aong 7 species plants, Spathiphyllum floribundum marked the first,and Guzmania lingulata the least.In the third environment, which equals to 8% full-exposure, the amount of transpired water release ranged 69.34-183.38g·m^-2·d^-1,and the amount of absorbed caloric ranged 169.19-447.75KJ·m^-2·d^-1.Aong 7 species plants, Syngonium podophyllum marked the first,and Guzmania lingulata the least.3. The effect of natural compounds from 7 indoor plants on 4 microorganism in April, July and October.The experiment shows clearly that effect of Syngonium podophyllum is not remarkable; While Spathiphyllum mauna,Brassaia actinophylla, Guzmania lingulata, Clivia miniata,Aglaonema modestum and Monstera deliciosa shows remarkable restriction to Staphylococcus aureus, Actinomycete , Aspergillus niger and Trichoderma harzianum by over 16.67%.The measurement in July shows that Brassaia actinophylla restricts Staphylococcus aureus and Aspergillus niger best of all-by 40% and 56.28% respectively. Aglaonema modestum restricts Actinomycete by 42.50%. The measurement in April shows that Clivia miniata, Guzmania lingulata, and Spathiphyllum mauna can restrict Actinomycete remarkably by 64.52%, 56.84% and 49.46% respectively. The experiments also show that 6 species of plants' restriction to Staphylococcus aureus,Actinomycete and Aspergillus niger in July is better than that in April and in October; But their restriction to Trichoderma harzianum in April and October is better than that in July.The thesis studied the characteristic of Photosynthesis, transpiration, bacteriostatic action of volatile secretion among 7 species of plants in different environments indoor, These tests provide the theories for the interior plant designation. When the temperature is 25℃to 32℃and the humidity is 40% to 65%, in the effect of carbon fixation and oxygen release, transpired water release and absorbed caloric,Syngonium podophyllum,Aglaonema modestum , Spathiphyllum floribundum are better under 3 different indoor light environments. In the effect of bacteriostatic action of volatile secretion among 7 species of plants, Brassaia actinophylla,Aglaonema modestum, Clivia miniata, Guzmania lingulata, Spathiphyllum floribundum are better than the others,and they are thought to be applied reasonably.