International Journal of Environmental Research and Public Health Article Virtual Water Trade in the Service Sector: China’s Inbound Tourism as a Case Study Yu Zhang 1,2 , Jin-he Zhang 2,3,* and Qing Tian 1 1 School of Geography and Tourism, Qufu Normal University, Rizhao 276826, China;
[email protected] (Y.Z.);
[email protected] (Q.T.) 2 Huangshan Park Ecosystem Observation and Research Station, Ministry of Education, Huangshan 245800, China 3 School of Geography and Ocean Science, Nanjing University, Nanjing 210023, China * Correspondence:
[email protected] Abstract: Research on virtual water and the water footprint is mainly focused on agriculture and industry, and less so on the service sector. The trade in products generates virtual water flow, as does the flow of people. The flow of international tourists will inevitably lead to the transfer and exchange of water resources embedded in the virtual form. This study takes China’s inbound tourism flow as the research object, from the perspective of the water footprint, in order to explore virtual water “exports” to the world. Based on kernel density estimation and ArcGIS spatial analysis, spatial- temporal evolution and structural difference were investigated. Virtual water “exports” showed an increasing trend. The kernel density estimation curves basically exhibited a “single peak” feature which indicated that virtual water “exports” from tourism were not significantly polarized in China. In terms of spatial evolution, this varied greatly at the provincial and regional level and Guangdong was always in the high value area. The south displayed greater values than the north, but this Citation: Zhang, Y.; Zhang, J.-h.; difference in provinces narrowed over the years.