The most common woody species were Lagerstromia sp., Irvingia malayana Oliver ex A.Benn., Sandoricum koetjape Merr., Dipterocarpus costatus Gaernt, Hopea ferrea Heim. The bamboo layer is dominated by Melanorrhoea laccifera Pierre, Diospyros rubra Lecomte, Pterospermum semisagittatum Buch.-Ham. ex Roxb and Barringtonia annamica Gagnep., and two main species of bamboo, Dendrocalamus lonoifimbriatus and Bambosa cephalostachyum virgatum (FOF/GTZ, 1996). In recent years, large areas used for swidden cultivation have been abandoned due to incentives from the National Program on Land Allocation (NPLA).