SPIE Proceedings [SPIE Geoinformatics 2008 and Joint conference on GIS and Built Environment: The Built Environment and its Dynamics - Guangzhou, China (Saturday 28 June 2008)] Geoinformatics 2008 and Joint Conference on GIS and Built Environment: The Built Environment and Its Dynamics - The coupling law of the interaction between economic development and eco-environment in medium-sized city: a case from Lianyungang city in China