產業聚集被認為可降低廠商的市場交易成本,進而提高交易的效率與產業的垂直分工程度。本文嘗試利用行政院主計處之工商及服務業普查資料,探討台灣地區製造業垂直分工程度與產業聚集程度間的關係。本文發現一個產業在其產業聚集中心的垂直分工程度,會比該產業聚集中心外的垂直分工程度要高;而這個產業聚集中心內外垂直分工程度的差異,會隨著該產業整體的地理集中程度的上升而增加。此外,由迴歸分析結果可知,同產業的聚集與其他產業的聚集程度增加,均會提高垂直分工程度。但是,相關產業的聚集程度增加,會對區域內的產業垂直分工程度產生何種影響,端視該產業整體的地理集中程度而定,若是該產業整體的地理集中程度較高,相關產業的聚集對垂直分工程度具有較顯著的正面影響。
Industry agglomeration is thought to be able to reduce transaction costs, improve market efficiency and encourage vertical disintegration. In this paper we use the census data from Taiwan's manufacturing sector to explore the relationship between vertical disintegration and industry agglomeration. Our empirical results show that the degree of vertical disintegration in the center location is higher than that of neighboring locations. And the difference in vertical disintegration between center and neighboring locations increases with the industry's geographic concentration. We also find that the own-industry and other-industry agglomeration can significantly raise the degree of vertical disintegration. But the influence of related-industry agglomeration on vertical disintegration depends on industry's geographic concentration. Related-industry agglomeration raises the degree of vertical disintegration when the whole industry's geographic concentration is high.