Particles not emitting from specific face?

no matter how many particles i put on almost none show up on the top face of this box for some reason. i even tried creating a vertex group and it shifted all 100,000 hairs to the faces on the sides like somethings pushing them away.

here’s a picture http://imgur.com/a/WLjH7

I want to have hair particles covering the island so it looks like a grassy island.

You haven’t supplied a link to your blend file to review !!!

Try applying object scale (Ctrl+A)

https://drive.google.com/file/d/0B0nEFVimUculamVxa2VpcldybDA/view?usp=sharing