The beauty of open source information... Beijing MAC proactive in bettering ecological environment of north China. 4th paragraph:
Quote:


Huangyangtan, the locality of an artillery shooting range, is 90 km away from Beijing and is one of the sources of sandstorms hitting Beijing. In order to improve the ecological environment there, the Beijing MAC has invested 500, 000 persons/times, millions of yuan of fund to plant trees and grow grass totalling75,000 mu. The forest coverage has increased from 0.08% at the beginning of building the shooting range to the present 62.5%. A coordinated tactics-drilling base of the military area command and a drilling base of a unit have invested large amount of manpower and material to afforestation. Now the barren hills and wastelands in the past have taken on a new green look and the forest and grass survival rate reached 90% and above. The Hongshan Military Horse Ranch has adopted such comprehensive harnessing measures as enclosing pastures where herding horse is forbidden, while growing trees and grass on these pastures to recover the deteriorated grassland. The National Afforestation Committee and the Environmental Protection and Afforestation Committee of the PLA have named the Hongshan Military Horse Ranch as the Demonstration Base in Ecological Construction of the state and the army.



Out of that I pull:
1. artillery shooting range
2. coordinated tactics-drilling base of the military area command
3. drilling base of a unit
4. Military Horse Ranch

I believe #1, the artillery range, is here, just to the west of the landscape. The numbers on the hills are probably used for ranging and there do appear to be craters from artillery, especially to the South. Just follow the mountain range and they will pop out at you.

Since there are military tactics drilling bases also in the city, I think it is probable the landscape is being used for those purposes.

The windmill farm is interesting though.

Hope these links work... I haven't posted before.