LIN Xuedong1; ZHANG Yili1; YAO Zhijun1; GONG Tongliang2; WANG Hong3; CHU Duo4; LIU Linshan1; ZHANG Fei5
Source Publicationjournalofgeographicalsciences
AbstractTaking the Lhasa River Basin above Lhasa hydrological station in Tibetan Plateau as a study area, the characteristics of the annual and monthly mean runoff during 1956-2003 were analyzed, based on the hydro-data of the two hydrological stations (Lhasa and Tanggya) and the meteorological data of the three meteorological stations (Damxung, Lhasa and Tanggya). The trends and the change points of runoff and climate from 1956 to 2003 were detected using the nonparametric Mann-Kendall test and Pettitt-Mann-Whitney change-point statistics. The correlations between runoff and climate change were analyzed using multiple linear regression. The major results could be summarized as follows: (1) The annual mean runoff during the last 50 years is characterized by a great fluctuation and a positive trend with two change points (around 1970 and the early 1980s), after which the runoff tended to increase and was increasing intensively in the last 20 years. Besides, the monthly mean runoff with a positive trend is centralized in winter half-year (November to April) and some other months (May, July and September). (2) The trends of the climate change in the study area are generally consistent with the trend of the runoff, but the leading climate factors which aroused the runoff variation are distinct. Precipitation is the dominant factor influencing the annual and monthly mean runoff in summer half year, while temperature is the primary factor in winter season.
Document Type期刊论文
2.Tibet Hydroelectric Investigation, Designed Research Institute
3.Tibet Hydrographic and Water Resources Survey Bureau
4.Institute of Xizang-Plateau Atmosphere Environment Sciences
First Author Affilication中国科学院地理科学与资源研究所
Recommended Citation
GB/T 7714
LIN Xuedong,ZHANG Yili,YAO Zhijun,et al. thetrendonrunoffvariationsinthelhasariverbasin[J]. journalofgeographicalsciences,2008,18(1):95.
APA LIN Xuedong.,ZHANG Yili.,YAO Zhijun.,GONG Tongliang.,WANG Hong.,...&ZHANG Fei.(2008).thetrendonrunoffvariationsinthelhasariverbasin.journalofgeographicalsciences,18(1),95.
MLA LIN Xuedong,et al."thetrendonrunoffvariationsinthelhasariverbasin".journalofgeographicalsciences 18.1(2008):95.
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