扬州古运河风光带绿化模式的生态环境效应

对扬州古运河风光带不同绿化模式的生态环境效应进行了初步研究,结果表明:春季(春末夏初)各模式林地的噪音和空气含尘量均有极显著或显著的差异,减噪效应和减尘效应从强到弱依次均为模式绿化群落、模式区内草坪、对照(模式区旁硬质园路)。生态环保型模式群落、生态保健型群落与生态景观型群落的噪音分别比对照减少12.63%~20.20%,9.22%~14.59%,8.86%~9.71%;空气含尘量分别比对照减少了63.65%,55.00%和54.68%,比草坪减少36.40%,19.19%和5.12%。扬州琼花(木本)群落也有明显的减噪效应,该群落内噪音分别比对照(硬质园路)与草坪(模式区内)减少14.13%和4.00%。

The Environmental Effects of Ecological Landscape Afforestation Pattern Along the Grand Canal in Yangzhou

The environmental effects of ecological landscape afforestation pattern along the Grand Canal in Yangzhou were studied.The results showed that the noise and the dust of the tested patterns were the most significantly or significantly different.The effect of noise decreasing and stagnant dust from the big to small ordinal(the order of both is the same): the afforestation pattern community,the lawn in the patterns,and the control(the hard lanes nearby the pattern community).The noise of the ecological environmental pattern community,the ecological healthy community and the ecological landscape community were decreasing by 12.63%~20.20%,9.22%~14.59% and 8.86%~9.17% compared with the noise of the control respectively,while the quantity of the dust in the air were decreasing by(63.65%),55.00% and 54.68% compared with the one of the control;and the quantity of the stagnant dust were decreasing by 36.40%,19.19% and 5.12%,compared with the one of lawn.The community of the city flower of Yangzhou Viburnum macrocephalum also showed the noise decreasing effect.The noises were decreased by 14.13% and 4.00% respectively compared with the ones of the control(the hard lane) and the lawn in patterns.The research results provided scientific data for the city forest ecological network system construction.