An Ecological View of a Subsistence Economy Based Mainly on the Production of Rice in Swiddens and in Irrigated Fields in a Hilly Region of Northern Thailand

Some aspects ofthe subsistence economy ofa Skaw Karen tribal village, based rnainly on rice production in swiddens and in wet fields in a hilly region of Northern Thailand, were quantitatively investigated.The labor productivity at swiddens in terms of energy, that is, the ratie between the cornbustion energy of husked rice from swiddens and net energy expenditure ofa worker, was calculated economy of a Skaw Karen tribal village in the hills of Northern Thailand.It is based on the field research which I conducted over 21 months