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[1]WANG Guo-qing,ZHANG Jian-yun,LI Xue-mei,et al.Runoff Variation of the Xinshuihe River Catchment and Its Response to Environmental Change on the Loess Plateau[J].Research of Soil and Water Conservation,2014,21(03):192-196.

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Runoff Variation of the Xinshuihe River Catchment and Its Response to Environmental Change on the Loess Plateau

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 21 Number of periods: 2014 03 Page number: 192-196 Column: Public date: 2014-06-28

Title:: Runoff Variation of the Xinshuihe River Catchment and Its Response to Environmental Change on the Loess Plateau

Author(s):: WANG Guo-qing^1,2, ZHANG Jian-yun^1,2, LI Xue-mei³, JIN Jun-liang^1,2, LIU Cui-shan^1,2, BAO Zhen-xin^1,2, YAN Xiao-lin^1,2, SONG Xiao-meng^1,2; 1. State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing Hydraulic Research Institute, Nanjing 210029, China;
2. Research Center for Climate Change, Ministry of Water Resources, Nanjing 210029, China;
3. Hydrology Bureau, Yellow River Conservancy Commission, Zhengzhou 450002, China

Keywords:: Xinshuihe River catchment; runoff evolution; cluster analysis method; climatic elements; responses

CLC:: P333.1;TV211.1

DOI:: -

Abstract:: Xinshuihe River catchment was taken as a case. Evolution phases of runoff were detected by using cluster analysis method. We then analyzed the responses of runoff variation to changes in climatic elements at different phases, and preliminarily revealed driving forces of runoff variation in the Xinshuihe River catchment. Results indicate that the recorded runoff at Daning station of the Xinshuihe River catchment presented a general decreasing trend over the period from 1955 to 2008, with significant changing year occurring in 1965 and 1979. Relationships between runoff and precipitation at annual scale and monthly scale for different phases are different. Relatively, monthly runoff highly correlates to precipitation in flood season from June to October rather than that in dry season from November to May, but monthly runoff positively correlates to temperature when monthly mean temperature ranges from -5℃ to +5℃. Runoff in flood season is dominated by high intensity rainfall while snow-melting flow and base flow are main components of runoff in dry season. Moreover, human activities including soil and water conservation measure and hydraulic engineering construction, play principle driving roles in runoff decline, especially for the period of the 21st century.

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