For many centuries the population of Ladakh has led a self-reliant existence mainly based upon subsistence agriculture (self-sufficient in food-grain production), pastoralism and caravan trade. Since several decades, Leh District, a part of Ladakh, whose population is doubled from about 70000 in 1981 to 145000 in 2011, is no more self-sufficient in food-grain production. To overcome the demand-supply imbalance a large quantity of rice and flour wheat is imported every year by traders, cooperatives and central government. However to be self-sufficient is an important issue for this land locked territory which has not trade restrictions but severe constraint in transportation. Importing goods to Ladakh necessitates the shipping of goods by truck across the Himalayas, with passes as high as 5300 m, covering the distance of Manali to Leh (480 km) or Srinagar to Leh (420 km) will takes about three days.