Abstract:
This paper attempts to analyzes spatial structural change of economic and identification of
base sector in Siak District. The data used in this paper are time series (secondary data)
consists of the Gross Regional Domestic Product (GRDP) Siak District and Gross Regional
Domestic Product (GRDP) Riau Province at 2000 Constant Market Price by Industrial
Origin Excluding Oil 2001-2010. The data obtained from Central Bureau of Statistics Riau
Province. The analysis methods applied in this study are Shift Share Analysis, Shift Share
Modification Esteban Marquillas, Location Quotient and Base Multiplier. The Results of the
study analysis known that: Contribution of the primary sector in total GRDP has decreased
during the period analysis, while the contribution of secondary and tertier sector has
increased over the analysis period. Increased the level of GRDP in Siak by 112.70% due to
the effects of economic growth in the level of Riau Province. Effect of economic
competitiveness of negative 14.28 %, while the influence of the Industrial Mix only by 1.58
%. GDRP growth is the largest from manufacture sector amounted to Rp 928,774.54 million,
national share of this sector amounted to 113.43%, differential shift of negative 33.62% and
proportional shift of 20.18 %. From Esteban Marquilass Shift Share analysis only
agriculture and construction has a competitive advantage and manufacture sector has only
the specialization advantage. LQ analysis shows that base sector in Siak has only
manufacture sector. Average value of base multiplier effect of Siak are 1.9, it means sector
basis can give impact to the GRDP formation by 1.9 times of the total output
