EFFECT OF RESERVOIR'S INITIAL IMPOUNDMENT AND CLIMATIC CONDITIONS ON THEn DISSOLVED OXYGEN IN DOWNSTREAM REACHES: A CASE STUDY ON XIANGJIABA ANDn XILUODU RESERVOIRS

摘要

Dissolved oxygen (DO) has a significant impact on aquatic ecological environment and the living conditions of fishes. Water quality, especially water temperature, reservoir discharge pattern and climatic conditions are believed to influence the changes in DO levels. A case study was carried out, considering all of the 3 conditions in the upstream of RURY (standing for National Nature Reserve for the Rare and Endemic Fishes in the Upper Reaches of the Yangtze River), which was established to prot