Study On Greening Temperature And Humidity Regulation And Release Of Oxygen And Carbon Sequestration Along State Road 101

With the observation of net photochemical velocity of the eighteen kinds virescence trees and the two typical surfaces'change of temperature and humidity in the Beijing plain Road G101,this thesis has analysed the ability absorbing carbon-dioxide and releasing oxygen of the virescence trees in the Beijing plain Road G101,and it also has analysed the benefits absorbing carbon-dioxide,releasing oxygen,debasing temperature,increase humidity of the two typical surfaces.This paper based on the actinic equation and net photochemical velocity to calculate the unit foliar area quantity of absorbing carbon-dioxide and releasing oxygen,the unit area daily quantity of absorbing carbon-dioxide and releasing oxygen of the kinds of trees,and then concludes the annual change rule of absorbing carbon-dioxide and releasing oxygen,and divides the ability absorbing carbon-dioxide and releasing oxygen into three grades by clustering.The results show that:(1) Summarized 72 kinds of common greening in Beijing Road by investigation and information collection. (2) The capacity of plants in releasing oxygen and carbon sequestration as follows:1) The capacity of unit leaf area of plants in carbon sequestration descending as follows:Arbor are Broussonetia papyrifera,runus cerasifera,Ehrh.f.atropurpurea Jaeg,ophora japonica L.,f.duplex Rehd, f.umbraculifera Rehd.,Rhus typhina,opulus tomentosa Carr,oelreuteria Laxm.,raxinus chinensi, Robinia pseudoacacia,cer truncatum Bunge,latamus occidentalis L.,linus tabulaeformis Carr;shrub are agerstroemia indica L.,Hibiscus syriacus,yringa L.,uonymus japonica Thunb,orbaria kirilowii(Regel) Maxim.;2) Classify the plants according the capacity in carbon sequestration of unit leaf area as follows: Broussonetia papyrifera and runus cerasifera are the first level,the second level contains opulus tomentosa Carr,ophora japonica L.,f.umbraculifera Rehd.,raxinus chinensi,Rhus typhina,oelreuteria Laxm.,f.duplex Rehd,uonymus japonica Thunb,yringa L.,agerstroemia indica L.and latamus occidentalis L.;the third level contains Robinia pseudoacacia,cer truncatum Bunge,orbaria kirilowii (Regel) Maxim.and linus tabulaeformis Carr;3) Classify the plants according the capacity in carbon sequestration for unit area of sample plot as follows:Broussonetia papyrifea,runus cerasifera and latamus occidentalis L.are the first level,the second level contains opulus tomentosa Carr,Robinia pseudoacacia,cer truncatum Bunge,raxinus chinensi,Rhus typhina,oelreuteria Laxm.,f.duplex Rehd and agerstroemia indica L.;the third level contains ophora japonica L.,f.umbraculifera Rehd.,orbaria kirilowii(Regel) Maxim.,uonymus japonica Thunb,unus cerasifera Ehrh.f.atropurpurea Jaeg,ringa L. and linus tabulaeformis Carr;4) The differences of the capacity in carbon sequestration of unit leaf area are mainly determined by the photosynthetic capacity of itself,while the differences between the classifies of the capacity in carbon sequestration of unit leaf area and unit area of sample plot are mainly determined by the leaf area index.(3) The conclusion on releasing oxygen carbon sequestration and decreasing temperature and increasing relative humidity of sample plot along G101 are as follows:1) The canopy density,leaf area index and the capacity in releasing oxygen carbon sequestration of sample plot Y2 are higher than Y1,and the same in benefit on release oxygen carbon sequestration and decreasing temperature and increasing relative humidity.2) The temperature falls 0.55℃and humidity increased by 1.2%with a depth of each progressive irt the both sample plots,the effect of plant community in decreasing temperature and increasing relative humidity in august are more obvious than other seasons.3) The benefit on carbon sequestration of the road with the configuration mode as Y1 is 3,297.62 rmb/d·km,and that of Y2 is 810.75rmb/d·km.Calculated by the price of industrial oxygen which is 9.8 rmb/kg,the benefit on releasing oxygen of the road with the configuration mode as Y1 is 2,350.12 rmb/d·km,and that of Y2 is 5,775.82rmb/d·km.