This paper employed a network approach to investigating the inter-jurisdictional networks formed within the Pan Pearl River Delta (PPRD). We examined the overlapping participation of PPRD members in interlocal agreements of environmental protection, tourism, transportation, S&T and culture, migrant labor, public health, and trade. The PPRD members are found to build extensive regional networks to address issues of regional concerns. Although regional economic integration was the initial focus, more collaborative efforts have been devoted to tackle the concerns of minimizing negative externalities brought by rapid social and economic progress. Geographic proximity and resource complementarity play key roles in determining members' scale and scope of cooperation with each other. The Province of Guangdong occupied the most central positions in all the PPRD networks.
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