Le Trong Trai et al. (2001) argued that with an abundance of heavily degraded land available for rehabilitation, forest management and other land uses, there is considerable potential for cash earning activities in the buffer zone (for example through economic crop plantations). This activity would also reduce the overall pressure on the forest resources in the nature reserve. They also suggested that current arrangements for forest development and management in the bare lands are costly, create social tensions and seem to be unsustainable in the long run. On the other hand some of the Acacia plantations have been established in.