| Succulent plants are an imporntant kind of indoor plants ,and CAM ones of them can remove CO2 during night .This knid of plant can match with other plants which can absorb CO2 during day, and make inside plant design more scientific and reasonable. To select such high absorbing capacity plants which can remove CO2 during night is important for interior plants design.This subject selects Hoya carnosa, Zygocactus truncactus, Rhipsalidopsis gaertueri, Sansevieria trifasciata cv Laurentii , Pereskia aculeate , Aptenia cordifolia , Kalanchoe blossfeldiana 'Sensation ', Kalanchoe fedtshenkoi 'Rosy dawn'and Peperomia scandens 'Variegata' these 9 Succulent plants,and through the study on circumstance indoor at different time .this gain the curve of light distributing indoor .At the same time,the paper views 5 representational light circumstance indoor as the experimental district, such as : straight light , bright light , and shade,and so on . then Introduction to Plant Gas Exchange Measurements was studied in the changes of the experimental plants,Carbon dioxide exchanged rate and transpiration rate experimental day and night.Meanwhile calculating how much does the carbon fixation and transpired water release and absorbed Caloric day and night.And also studied in the capacity which carried acid and conductivity of the experimental plants which remove CO2 during night (crassulaceae acid metabolism) to identify their Photosynthetic pathway.Not only gaining the correlation data of the characteristic of carbon fixation and transpiration of 9 Succulent plants indoor,and this also provides the technic sustain and theory thereunder to interior plant design. The studying results are follows:1 The experimental plants such as Hoya carnosa, Zygocactus truncactus, Rhipsalidopsis gaertueri, Sansevieria trifasciata can all remove CO2 during nigh at different circumstance.And the carbon fixation of Hooya carnnosa during nigh was higher than the other experimental ones .For example in the straight light Hoya carnosa (4.56 g.m-2) > Zygocactus truncactus (4.09 g.m-2) , Rhipsalidopsisgaertueri(1.70 g.m-2) > Sansevieria trifasciata(1.65 g.m-2); Kalanchoe fedtshenkoi 'Rosy dawn'didn't remove CO2 in shade at nigh,but in the straight light its Carbon dioxide exchanged rate could reach 4.02umol.m-2.s-1 and remove CO2 during the day. Pereskia aculeate, Aptenia cordifolia, Kalanchoe blossfeldiana 'Sensation ' and Peperomia scandens'Variegata' are all presented as the CO2 absorbtion during the day in different circumstance, or example in the straight light Pereskia aculeate (6.44 g.m-2) > Aptenia cordifolia (4.69 g.m-2) > Kalanchoe blossfeldiana 'Sensation ' (2.77 g.m-2) > Peperomia scandens 'Variegata' (0.58 g.m-2 ) . The Carbon dioxide exchanged rate can increase higher and higher with the light intensity goes ,but the changing tide of the pure CO2 absorbing rate at night didn't remove CO2.The breath rate was 0.3~0.4umol.m-2.s-1.2 The changing tide of the experimental plants Transpiration rate and conductivity day and night was in the similitude, Transpiration rate and conductivity of the experimental plants which remove CO2 during night was lower than others(abort 4 times)3 The capacity of the acid between day and night among Hoya carnosa, Zygocactus truncactus, Rhipsalidopsis gaertueri, Sansevieria trifasciata, Kalanchoe fedtshenkoi 'Rosy dawn' was accord with the characteristic of crassulaceae acid metabolism plants on acid capacity higher during night and lower during day.But Pereskia aculeate, Aptenia cordifolia and Peperomia scandens 'Variegata' doesn't correspond this characteristic. Kalanchoe blossfeldiana 'Sensation ' the changes of acid capacity day and night was accorded with the characteristic, but didn't remove Carbon dioxide during night. So this problem should be studied further.4 The different environment of light intensity makes the difference in leaves of Kalanchoe blossfeldiana 'Sensation ', Kalanchoe fedtshenkoi 'Rosy dawn' and Rhipsalidopsis gaertueri but there is no plants death phenomenon during the p...
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