IMPACT OF CLIMATIC CHANGE AND HUMAN ACTIVITIES ON THE BURST OF THE YELLOW RIVER IN HISTORY
Shi Shaohua (Nanjing Institute of Geography & Limnology, CAS,)
This articles makes a statistical analysis of the middle and lower reaches of the Yellow River burst in history, and sorted out the cause and the law of the burst in natural origin and human origin. The result shows that the frequency of the Yellow River burst would increase during the wet period. The account for the occurrence was severe soil erosion that was caused by heavy rain in the wet period, which also caused a lot of sand deposition in the riverbed of the middle and lower reaches of the river. Human activities were also an importent cause for river burst. Since Little Ice Age when human activities intensified in Loess Plateau, primitive vegetation was destroyed, causing severe soil erosion. Human activities are a main cause that accounts for the higher frequency of the river burst than in other periods. The paper believes that the danger of the Yellow River burst will be increased in the next century with a higher temperature environment.