Spatial Autocorrelation Analysis of Urban Bus Emission
In order to know the spatial distribution of urban city emission,thePEMS(Portable emission measurement system)was used to acquire the data of the bus emission of route 100,and the spatial autocorrelation characteristics and difference of four types of exhaust(C02、CO、NOxand HC) were researched with spatial autocorrelation(global spatial autocorrelation and local spatial autocorrelation)analysis method.The results show that the four types of exhaust all have spatial autocorrelation characteristics and spatial aggregation.Compared with CO2 and CO,spatial aggregation of NOx and HC are higher,and CO2 exists spatial heterogeneity,but don't the other three types of exhaust.The road conditions and transportation facilities result in the changes of speed and acceleration,which makes emission present spatial distribution.
国家科技期刊平台
NSTL
万方数据
维普
