s:701:"TI Slash-without-burn technique in land clearing: environmental and economic opportunities and constraints AU Suyanto B L AU Tomich T P AU Garrity, D.P. AU van Noordwijk, M. AB Slash-and-burn as a technique of land clearing produces visible smoke and invisible emissions of the greenhouse gases: methane, nitrous oxide, and carbon dioxide. Land clearing using fire is extensively practiced in Sumatra, and in other regions in Indonesia, by virtually all actors (public and private, large and small scale) contributing to forest conversion. Slash and burn is attractive to all these actors because fire is the cheapest, most effective means to clear land (Tomich and van Noordwirjk, 1995). ";