Semi Shift Share Analysis

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The semi-shift-share analysis reveals the complicated joint effects of socioeconomic and spatial forces on job accessibility changes. The share component represents the regional change in jobs-to-population ratio and applies the fixed regional average growth rate across the whole study area, while the shift component highlights the relative changes in job accessibility in individual jiedaos on top of the changes caused by the region-level growth. As results, the shift component, representing the effects of spatial transformation, is more directly associated with the variation in job accessibility changes across the study area, compared with the share component. But we cannot ignore the share component, which represents the effects of socioeconomic …show more content…

A noteworthy finding is that the socioeconomic restructuring has significantly reduced job accessibility for high-education population. Beijing has aimed to transition to an economy based on highly-specialized high-skilled industries, and it has indeed successfully shifted the economic structure. At the same time, the college expansion program and the migration of high-education population into the city increased the demand for high-education jobs. No research, to our knowledge, has pinpointed the increasingly intense competition in the labor market for high-education jobs. This finding calls attention to the structural mismatch between jobs and job …show more content…

Population has moved outward to the suburbs, away from places of high job accessibility, the trend is more obvious for the low-education group than for the high-education group. It might reflect the declining importance of spatial access to jobs in people’s residential location choices, particularly with the improvement in the automobile and transit networks in Beijing. However, we suspect that the limited and pricy housing supply is the main driving force that exacerbates the suburbanization of low-education population. The housing price-to-income ratio in Beijing exceeded 10-to-1 in 2010 (Wu et al., 2012). Affordable housing supply has shifted to the suburbs. Urban villages are the main suppliers of affordable housing in the private market, and they tend to be in the fringe areas. Local governments also provide affordable housing or subsiding housing, but the housing has also gradually shifted to urban fringes (Song et al., 2007; Han et al., 2015) where land and construction costs are lower (Shen et al., 2015). As results, low-education population are forced out of high accessibility places. Housing policies should consider connecting affordable housing supply with the locations of growing low-education job

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