his paper analyses the characteristic values of carbon transfer in Yellow River, basedon a river-section model and relevant hydrologic, soil erosion,Hydro-Cmical data,The re-sults show that :the suspended carbon and inorganic-ionic carbon are main components of theC-transfer,and its value depend on erosion and runoff status and can be shown as regressivefunctions of high interrelationship. A source-or-sink function of sub-basin depends on the neteffect of relevant erosion and sedimen In detail, the sources ...