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- W3142048286 abstract "【Objective】This study analyzed the photosynthetic characteristics and ecological benefits of introduced and native plants in Beijing to provide references for selection and allocation of greening tree species.【Method】Physiological and ecological indices of four introduced plants(Fraxinus mandshurica,Rhus typhina,Aesculus chinensis,and Davidia involucrata Baill)and four native plants(Robinia pseudoacacia,Platycladus orientalis,Pinus tabuliformis,and Ailanthus altissima)in Beijing were tested by Li-6400 photosynthesis testing system.Furthermore,the relationships between net photosynthetic rates and enviorment factors were analyzed using stepwise multiple regression method and the carbon-capturing,oxygen-releasing,temperature-reducing and humidity-increasing effects of these plants were also studied.【Result】Net photosynthetic rates of Ailanthus altissima and Pinus tabuliformis showed an one-peak diurnal curve,while those of other trees showed a double-peak curve.The major factors affecting photosyntheticrates were stomatal conductance,intercellular CO2 concentration,and photosynthetic active radiation.Ailanthus altissima(19.36 and 14.08g/m2),Rhus typhina(16.99 and 12.36g/m2)had higher carbon-fixing and oxygen-releasing effects,while Pinus tabuliformis(5.97 and 4.34g/m2),Aesculus chinensis(10.58 and 7.69g/m2)had lower carbon-fixing and oxygen-releasing effects.Fraxinus mandshurica and Ailanthus altissima had higher cooling and humidification ability with the heat absorption amounts of5 189.82 and 5 162.31kJ/(m2·d),the daily water releasing amounts of 2 139.37 and 2 128.03g/(m2·d),and the temperature reductions of 0.172 and 0.171℃,respectively.Davidia involucrata Baill and Pinus tabuliformis had lower effects with the heat absorption rates of 1 284.05 and 856.42kJ/(m2·d),the water releasing amounts of 529.32 and 353.04g/(m2·d),and the temperature reductions of 0.043 and 0.028℃,respectively.【Conclusion】Aesculus chinensis and Fraxinus mandshurica were suitable for residential areas,and Platycladus orientalis,Pinus tabuliformis were suitable for arid environments.Rhus typhina was with strong competitive capacity while should be treated with caution.Ecological benefits of introduced and native plants should be fully considered to maximize their values." @default.
- W3142048286 created "2021-04-13" @default.
- W3142048286 creator A5074258145 @default.
- W3142048286 date "2014-01-01" @default.
- W3142048286 modified "2023-09-24" @default.
- W3142048286 title "Photosynthetic characteristics and ecological benefits of greening tree species in Beijing" @default.
- W3142048286 hasPublicationYear "2014" @default.
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