Holocene Extreme Floods and Environmental Change of Qishuihe River in Western Guanzhong Basin

  • College of Tourism and Environment Science, Shaanxi Normal University, Xi'an 710062, China

Received date: 2006-11-12

  Revised date: 2006-12-27

  Online published: 2007-03-25

Supported by

National Natural Science Foundation of China, No.40571154; No.40471119; Programs Foundation of Ministry of Education of China, No.20050718008; Natural Science Foundation of Shaanxi Province, No. 2006D01


Palaeoflood hydrologic study was a leading subject in the global change study. Using sediment physiognomy, archaeology and OSL chronology, the palaeoflood slacking deposits were found and analyzed on T2 terrace between the Qishuihe and Weihe rivers. The results showed that 20 palaeoflood events happened in the 4 periods of 4650-4600 a BP, 4400-4300 a BP, 4200-4100 a BP and 3100-3010 a BP since 11500 a BP, respectively. Then their peak discharges were calculated according to the hydrology principle, which greatly prolonged the flood data sequence in the Qishuihe river valley. And the flood frequency curve was established to enhance the reliability to control and reduce flood disasters in this valley. This research result is not only practical to the flood control, water resources exploitation and eco-environmental construction for Yangling, a well-known agricultural and high-tech city in Northwest China, but also fills in the blank of the palaeoflood hydrologic study in the Weihe River Basin, which is of great scientific significance to the comprehensive improvement of the eco-environment of the river basin.

Cite this article

ZHA Xiaochun, HUANG Chunchang, PANG Jiangli . Holocene Extreme Floods and Environmental Change of Qishuihe River in Western Guanzhong Basin[J]. Acta Geographica Sinica, 2007 , 62(3) : 291 -300 . DOI: 10.11821/xb200703006


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