4 Kinds Of Common Garden Plant Dust Effect And Its Influence On Photosynthetic Characteristics Of Urumqi City

Through the study of changes of Urumqi city natural dust and dust retention ability of 4 kinds of common plants,plants and effects of foliar dust on the photosynthetic characteristics,improve the environment for the future of the atmospheric dust plant response capabilities,and provide a theoretical basis for the reasonable selection of green trees and in the city.15 sampling points were selected in Urumqi City,through the dust collecting barrel atmospheric natural dustfall,and the sampling points were selected 4 kinds of common landscape plants in Xinjiang torch tree,poplar,elm and crown of Fraxinus rhynchophylla in various experimental dust,dust in the leaves of 4 species were determined,and the dust before and after leaf photosynthetic physiological parameters and photosynthetic light response curve,and the correlation of the photosynthetic physiological characteristics of leaf and leaf of dust retention.The results show that:(1)The amount of atmospheric dust in the main urban area of Urumqi is as follows: Urumqi petrochemical chemical fertilizer plant>Xinjiang Urumqi Bayi Iron and Steel Co>Di Wang International Mall>Urumqi west station>Eleven area of petrifaction>academy of agricultural sciences>Civil aviation District>Grain school>Xinjiang University>Kowloon ecological garden>Xiaoximen>railway administration>Hot Spring campus of Xinjiang Normal University>Weisite>Urumqi cemetery.(2)The amount of detained and adsorbed dust on the surface of different plants will be different in different time periods,but on the whole it will increase as time goes on.Dust dust amount of early Xinjiang poplar leaves the surface up,dust amount of round crown elm leaves the surface at least;with the passage of time,the most obvious change of leaf surface dust amount of the torch,the fastest growth rate,and the unit dust amount is maximum,and the growth of Fraxinus rhynchophylla most slowly,and the amount of dust removal unit.For different sampling points,the dust retention ability of 4 plants showed the same differences,leaves dust amount show Torpedo tree > Xinjiang poplar > round crown elm > large leaf wax;The dust amount of the same plant leaves at different sampling points also show roughly the same sort of "Xinjiang Urumqi Bayi Iron and Steel Co>Urumqi petrochemical chemical fertilizer plant>Di Wang International Mall > Kowloon ecological garden > Grain school > Weisite > Urumqi cemetery,in which all species leaves near the dust in bayisteel was significantly higher than that of other sampling points,the second is in the vicinity of the Ukrainian petrochemical fertilizer factory,cemetery of all species was the lowest foliar dust.Show in different sampling points of natural dustfall is an important factor affecting the dust in the plant leaves.It shows that in different sampling points of natural dustfall is an important factor affecting the dust in the plant leaves.(3)The adverse effects of foliar dust on plant photosynthetic mechanism will have different levels of.The dust will reduce the torch tree,Xinjiang Yang,crown elm and Fraxinus rhynchophylla on light adaptation,the impact on the most obvious round crown elm.The light utilization efficiency of 4 kinds of plants under the influence of dust were increased,and the utilization efficiency of weak light decreased,the utilization efficiency of light torch tree is the highest rise in dust,Fraxinus rhynchophylla under the influence of the utilization efficiency of weak light the largest decline in Xinjiang,Yang dust both before and after high light utilization efficiency.To sum up,in the downtown area of Urumqi City,atmospheric natural dustfall showed north especially northwest northeast of the highest city central business district and city traffic to slightly lower,the southern and western suburbs of the lowest;plant leaf dust spatial distribution also showed the same trend,for different species,dust the amount of torch tree is the highest,the lowest amount of Fraxinus rhynchophylla,other two kinds of dust dust in the middle;under the influence of the ability to adapt to the leaves of 4 species of light will change,the light utilization efficiency of the torch tree is the highest rise in dust,Fraxinus rhynchophylla under the influence of the utilization efficiency of weak light decreased the most.Xinjiang Yang in the dust before and after high light utilization efficiency.