Im doing a project for my capstone class in Geoenvironmental Studies and i am having a hard time finding data for aquifers in other countries.
A note about GIS data from China; many (all) their datasets are considered national secrets and are very difficult to obtain. Even if you do obtain a copy you could get into trouble. I tried finding similar data for my capstone class and ran into the same problem.
If you are serious about working with GIS data in China, the easiest way is complete a masters program from a university within China. There was a company out of Michigan (I think) that had some data on China, but they were restricted upon what data they could release.
Since no-one else has chimed-in, This paper may provide potential contact leads. http://landsat.gsfc.nasa.gov/?p=1273