A Study on Induced Effect Estimation of Aggregate and Stone Sector with Ritz-Spaulding Multipliers

This study derived production-production multipliers using a regional input-output table and estimated the induced effect of aggregates through the non-metallic minerals sector and the concrete products sector.In deriving the induced effect of aggregates, it is difficult to use the regional input-output table due to the sector classification problem.This study analyzed the non-metallic mineral sector, including aggregates, as aggregates sector, and the concrete products sector, which uses most of the aggregate production.By analyzing this, we attempted to alleviate difficulties caused by sector classification restrictions.In the process of estimating the induced effect, it was assumed that there was a decrease in aggregate production, and in the process of analyzing the concrete products sector, the effect of the decrease in concrete product production due to the decrease in aggregate production, that is, the decrease in production of one unit of aggregate was 0.8511 in the concrete product sector.The analysis was conducted on the premise of a decrease in unit production.Inducing effects within and between regions were calculated for the 17 metropolitan cities and provinces classified by the regional input-output table.The employment effect was also calculated, assuming a 10% production decrease to show differences according to the size of the aggregate and concrete product sectors in each region.