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[1]ZHAO Meiliang,CAO Guangchao,CAO Shengkui,et al.Temperature and Precipitation and Their Relationship with Runoff Change in Datong River from 1956 to 2016[J].Research of Soil and Water Conservation,2021,28(03):111-117.

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Temperature and Precipitation and Their Relationship with Runoff Change in Datong River from 1956 to 2016

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 28 Number of periods: 2021 03 Page number: 111-117 Column: Public date: 2021-04-20

Title:: Temperature and Precipitation and Their Relationship with Runoff Change in Datong River from 1956 to 2016

Author(s):: ZHAO Meiliang^1,2,3, CAO Guangchao^2,3,4, CAO Shengkui^1,2,3, LIU Fugang⁵, LI Yangyang⁵, ZHANG Zhuo^1,2,3, DIAO Erlong^1,2,3, CHEN Zhirong^1,2,3; (1.SchoolofGeographicalScience,QinghaiNormalUniversity,Xining810008,China;2.QinghaiProvince KeyLaboratoryofPhysicalGeographyandEnvironmentalProcess,Xining810008,China;3.MOEKeyLaboratoryofTibetanPlateauLandSurfaceProcessesandEcologicalConservation,Xining810008,China;4.AcademyofPlateauScienceandSustainabilityPeople'sGovernmentofQinghaiProvince&BeijingNormalUniversity,Xining810008,China;5.CollegeofResources,EnvironmentandPlanning,DezhouUniversity,Dezhou,Shandong253023,China)

Keywords:: climate change; runoff; sensitivity; Datong River

CLC:: P333

DOI:: -

Abstract:: Datong River valley which is located in the south slope of Qilian Mountains, is an important water source area for the northeast Qinghai Province and the western Gansu Province. It is of great significance to the development, utilization and management of the downstream water resources to clarify the change rule of Datong river runoff. Based on the runoff data of Garyide, Qingshizui and Xiangtang hydrological stations and meteorological data of 7 meteorological base stations nearby from 1956 to 2016, the trend analysis method, MK analysis, wavelet analysis and correlation analysis were used to study the runoff change and its relationship with temperature and precipitation in Datong River. The results show that:(1)a warm and humid climate of Datong river valley revealed from 1956 to 2016 with the temperature change rate of 0.22℃/decade(p<0.01)and the precipitation change rate of 26.78 mm/decade(p<0.01);(2)the runoff of Garyide and Qingshizui station increased at a rate of 10 million m³/decade and 30 million m³/decade, respectively, while the runoff of the Xiangtang station decreased at a rate of -87million m³/decade(p< 0.05). 22-year scale major periodic change occurred in the stations, and abrupt change was found in 2010, 2001 and 2000, respectively;(3)there was a significant positive correlation between runoff and precipitation in the three hydrological stations. In general, precipitation is the main supply source; inter-basin water transfer is the main human factor causinh the decrease of runoff in Datong River.

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Last Update: 2021-04-20