Development zone spillover effect: the externality of the gathering of manufacturing enterprises

Using the data of manufacturing enterprises from 2003 to 2013 and state-level economic technological development zone high-tech 2010 2012, this paper uses BD-DD dual robust identification strategy analyse impact mechanism overflow effect establishment zones by accurately judging geographical relationship between zones. The results show that has a significant spillover on surrounding enterprises, total factor productivity within 1000m is about 9% higher than boundary existence Marshall’s adjust theory tested. Spillover effects have range innovation, while human capital only 500m, indicating knowledge established in are main source gathering externality. From different characteristics manufacturing, or mature more affected effects, possibly because regional overlap factors production technology, it likely form Marshall cluster