This is the scene I created in my recent speedart:
http://youtu.be/-9a9isXRfhQ

There are textures included, but the ones from textures.com look better. Unfortuneately I am not allowed to redistribute them, so here you go:
http://www.textures.com/download/gravel0097/39788
http://www.textures.com/download/concretebunker0196/65111
http://www.textures.com/download/farmland0005/41924
http://www.textures.com/download/woodrough0125/105577
http://www.textures.com/download/cliffs0177/56233
http://www.textures.com/download/rocksmooth0176/49377
http://www.textures.com/download/barkdecidious0194/51115
http://www.textures.com/download/leaves0131/41230
http://www.textures.com/download/woodfine0011/19680

The trees in the speedart scene were created using the preset "ca_black_oak" from the "Add curve: Sapling"-Plugin.
I excluded them because they made the file too big.

Wallpapers:
https://drive.google.com/folder/d/0B2MP8XBW5P2DT1NLYklYRDVYaEk/edit