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[1]WANG Bo-lei,MA Xiao-yi,JI Wan-cai,et al.The Analysis of Aberrance Point in Wulanmulun River Basin by Using R/S Method[J].Research of Soil and Water Conservation,2007,14(06):250-252,255.

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The Analysis of Aberrance Point in Wulanmulun River Basin by Using R/S Method

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 14 Number of periods: 2007年06期 Page number: 250-252,255 Column: Public date: 1900-01-01

Title:: The Analysis of Aberrance Point in Wulanmulun River Basin by Using R/S Method

Author(s):: WANG Bo-lei¹, MA Xiao-yi¹, JI Wan-cai^1,2, FAN Yan-wei¹; 1. Key Laboratory for Agricultural Soil and Water Engineering in Arid Area of Education, Northwest A &F University, Yangling, Shaanxi 712100, China;
2. Shaanxi Survey and Design Institue of Water Environment Engineering, Xi’an 710016, China

Keywords:: R/S analysis; runoff sequences; aberrance point; F test; Wulanmulun River

CLC:: TV121.2;P333.6

DOI:: -

Abstract:: This paper researches the influences on industry and agriculture and environment by the runoff decreasing.Rescaled Range Analysis method (also R/S method) is simply introduced.Then analyze the 41 years runoff sequences in Wulanmulun river basin from 1961 to 2001 by using R/S method.Through the analysis, we find that the basin’s Hurst indices are bigger than 0.5, it suggests that the the continual decreasing trend of annual runoff sequences has persistence.The aberrance point year is 1993.There are significant differences between them.The analysis result shows that the over draft of shallow coal seams, the rapid development of agriculture and industry and the acceleration of urbanization had an important impact on the runoff deceasing after 1990s.These factors have accelerated the decreasing trend of runoff.We must pay a great attention to this problems.

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Last Update: 1900-01-01