Mr Zhang, 82 year old farmer in Minqin County, Gansu Province. China. Mr Zhang and his village have been told to vacate the land that he his family has farmed for around 300 years. Afer years of diversions the surrounding lake has become desert and the water table has dropped to 300 meters. In order to halt the advance of the desert the government has begun to strictly manage its remaining water sources and agricultural development.