Nepal's forestry, especially in the hilly and mountainous regions, is becoming unsustainable. More than half of the current fuelwood harvest exceeds replacement growth in the forests and is threatening the source for future supply. Although the source for the future is diminishing, the energy needs of the population are increasing rapidly. In 1992/93, 68% of primary energy supply came from fuelwood, 15% from agricultural residues, 8% from animal dung, and the balance from commercial products.