Study On Eco-servicefunction Of Common Plant And Plant Disposition

With the urbanization, the rapid development of growing town area, town population and economic growth, water pollution, air pollution, noise pollution, solid waste pollution and other environmental problems are becoming increasingly severe, making great harm to living environment of cities and towns , so building a scientific and effective eco-forest for cities and towns habitat, promoting the town, the town residents ,and the natural environment to live in harmony have become an urgent and important task during the process of the urban development.Taking Lin'an Jincheng street for an example in this paper , making a preliminary exploration to the ecological forest plant disposition and eco-benefits evaluation for town habitat .(1)Making an measurement to the shielding effect that common tree species to ultraviolet radiation(UVR) for the construction of urban ecological forest, results showed that: The shielding effect of Osmanthus fragrans, Magnolia denudate, Machilus thunvergii, Liquidambar formosana, Morus alba, Schima superba, Cinnamommum camphora, Ilex Corunta Var.fortunei, Phoebe sheareri, Elaeocarpus sylvestris, Ligustrum lucidum, Magnolia amoena, Zelkova schnideriana, Amorpha fruticosa, C.eyrei(Chanmp.ex Benth.), Toona sinensis, Sophora japonica to ultraviolet radiation are more than 90%.(2) Making an measurement to the reflected effect of the common 21 kinds of land covering materials to the ultraviolet and aero-anion of common ground cover plants, results showed that: the soft materials(lawn, turtle holly) is superior than the hard materials(granite and smooth red brick); the rough material is superior than the smooth material in hard materials; soft green plant material is superior than colored-leaf plants in soft materials. Camellia sasanpua, Ligustrum×vicaryi, Rhododendron simsii, Ilex crenata cv.convexa showed good aero-anion effect. (3)Making an measurement and evaluation to the habitat eco-efficiency of different communities, results showed that: Phyllostachys heterocycla show best effect in the shade effect, humidifier cooling effect, aero-anion and so on; Coniferous forest is better than broad-leaved forest, mixed forest is better than pure forest; multi-layer community is superior to the single-layer community. (4)Making an study to the diurnal variation of aero-anion concentration in different communities, results showed that: According to the diurnal variation curve of Aero-anion concentration, there is a trend of double peak during 7:00 to 19:00; the peak appears at 7:00 ~ 10:00 in the morning and 15:00 ~ 16:00 in afternoon , the valley appears at 12:00 ~ 14:00.(5)Making an Correlation Analysis to the aero-anion concentration ,air temperature, air relative humidity, light, ultraviolet radiation, the concentration of respirable particulate matter(PM10) and other factors, results showed that: high significant positive correlation between Aero-anion concentration and relative humidity, Aero-anion concentration showed highly significant positive correlation with relative air relative humidity, but showed significant negatively correlated with temperature and PM10, negative trend between Aero-anion concentration and solar radiation intensity, and significant positive correlation between Aero-anion concentration and ultraviolet radiation intensity(UVB).(6) Monitoring the annual changes to the aero-anion, results showed that: aero-anion effect in summer> autumn> spring> winter.(7)monitoring the aero-anion effects in different functional areas of Lin'an Jincheng town, results showed that: suburban green space> green apace in town> town center square.