Changes in the swidden system of the Kenyah Dayak tribe

Since the 1950s, the Kenyah Dayak people have been moving out of their isolated home. The further they migrate downstream, the more the monetary economy infiltrates into the village. At the same time, social and economic structures such as work organization, the mutual aid system, and the traditional land tenure system change. As the result of such changes, the originally sustainable swidden system has changed to a less sustainable one. To examine the dynamics of the swidden system practiced by the Kenyah people, the infiltration of monetary economy and the effect of the system on the environment are adopted as parameters. -English summary