A Study On Yellow River's Disasters During Northern Song Dynasty

From early Song Dynasty then on, the second calm period of Yellow River had been ended. In the reaches of Yellow River had Floods' disaster that ang dynasties before had never encountered. There were a lot of factors that resulted in Yellow River's disasters including historical and natural ones, but the social factors were mainly responsible for the disasters: firstly the river was not controlled carefully secondly, plants in northwest region of china were badly damaged during development and wars among Song, Liao and Xixia. Floods that were heavier than before did a lot of harm to people and their descendant. At the same time, the governor of Northern Song Dynasty paid a heavy price for floods. Considering historical lessons, experience should be absorbed, and the achievement advanced meathods of Yellow Rever's controlling and enineering technology should be paid move attention to and praised highly, after all, Northern Song Dynasty was an important historical period of Yellow River's controlling.