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1、景观植物对医院环境的影响The effect of landscape plant on hospital environment2008300168生命科学学院钟嘉胜The effect of plantIndoor physical:1. Photosynthesis2. Secrete sterilization3. Secrete volatile material 4. Absorbe toxic gases5. Stop airborne dust6. Adjust air humidity7. Weaken the light8. Reduce noiseresult:impro

2、ve indoor air qualityPsychic environment:1. Enhance visual aesthetic feeling2. Regulate moodresult:Encourage patients fight with diseaseThe hospital environment1. Far away from nature2. Overuse of air conditioner Wards and offices are the closed system. The air can not circulate Lower the humity 3.

3、Pollution Bacteria & Virus Building decoration materials:HCHO、Rn(氡)、C6H6(Benzene)、NH3(Ammonia)Table 1. Temperature and relative humidity ranges in some hospital departments What the landscape plant can do?1.The landscape plant can adjust the humidity and temperature indoor2.The landscape plant c

4、an control air pollution3.The landscape plant can screen radiation and noiseThe landscape plant can adjust the humidity and temperature indoor Reflecting or absorbing the sun light and transpiration enable the plant to release water into the air.It is reported that this function provides a humidity

5、range between 30%60%,which is similar to the comfort range of human. Beside,the process of the transpiration absorb the heat from the environment. More important,this speical environment is also the worst one for the Bacteria & VirusThe landscape plant can control air pollution Wiliam Waterville

6、 found that in the 24 hours lighting conditions, 90% content of the HCHO in 1 m3 was absorbed by Aloe barbadensis(芦荟) ;90% content of the C6H6 in was absorbedCommon Ivy(常春藤),Agave pelona(龙舌兰)can eat 70% How? On the surface of the plant,there is lots of stoma,the air pollution can go into the plant t

7、hrough it and join the metabolismFig. 1. Predicted monthly CO2 and NOx emissions both for the conventional and the hybrid plant. Fig. 2. Predicted monthly SOx and dust emissions both for the conventional and the hybrid plant.The landscape plant can screen radiation and noise Supported by steven R. Reese experiment,if we plant around building,we can stop the radiation spread.Succulent plant,like Opuntia dillenii Haw(仙人掌) can efficiently scre

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