Abstract
The purpose of this study is evaluating the influence change of the human activities affects the organic matter circulation in the basin area. At first, this paper highlights Muko river basin and compare the organic matters in 70s and 2000. Secondly, it evaluates the change of the organic matters by several factors, which are growth of population, the change of emission intensity of household, infrastructure building, increase of production and the change of emission intensity of industrial activities. In result, the river basin sewage system is the major trigger to increse the organic wastes, on the other hand, the decrese of population and the emission intensity of household decrease the organic wastes in Muko river basin. In the middle-stream and down-stream area, the river basin system increase organic waste, but in upperstream
