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[1]LI Hai-dong,SHEN Wei-shou,SHE Guang-hui,et al.Climatic Changes in the Source Region of the Yarlung Zangbo River over Last 35 Years, China[J].Research of Soil and Water Conservation,2010,17(05):63-67.

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Climatic Changes in the Source Region of the Yarlung Zangbo River over Last 35 Years, China

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 17 Number of periods: 2010 05 Page number: 63-67 Column: Public date: 2010-10-20

Title:: Climatic Changes in the Source Region of the Yarlung Zangbo River over Last 35 Years, China

Author(s):: LI Hai-dong^1,2, SHEN Wei-shou², SHE Guang-hui¹, CHENG Jian-min³, SUN Jun², SUN Ming²; 1. College of Forest Resources and Environment, Nanjing Forestry University, Nanjing 210037, China;
2. Nanjing Institute of Environmental Sciences, Ministry of Environmental Protection, Nanjing 210042, China;
3. Lianyungang Hydrology & Water Resource Survey Bureau of Jiangsu Province, Lianyungang, Jiangsu 222004, China

Keywords:: source region of the Yarlung Zangbo River; climate change; temperature; precipitation; wind speed; sunshine duration

CLC:: P467

DOI:: -

Abstract:: The objective of this paper is to reveal the climate background of the aeolian sand landform development in the source region of the Yarlung Zangbo river. Based on air temperature, precipitation, the highest and lowest air temperature, duration of sunshine, and wind speed daily data from 4 meteorological stations around the source region of the Yarlung Zangbo river, the features of climatic change in this region were analyzed comprehensively over the last 35 years from 1973 to 2007 using climatic linear trend methods. The main findings can be summarized as follows: (1) The source region of the Yarlung Zangbo river belongs to the cold and semi-arid highland climate zone with the mean annual precipitation of 206.12 mm, daily average air temperature of 2.77℃, maximum air temperature of 10.72℃ and minimum air temperature of -4.81℃, annual average wind speed of 2.92 m/s, annual sunshine hours for the 3 295.16 h from 1973 to 2007. (2) There was an obvious ascending trend for daily average air temperature in recent 35 years, especially after 1986, the average temperature of the linear growth rate was 0.77℃/10 a, it was higher than the average linear growth rate of 0.47℃/10 a in the past 35 years and an average of 5 stations in Mt. Qomolangma region of 0.234℃/10 a. (3) The fluctuation of annual mean precipitation was lager, and its increasing trend was not obvious, with an average growth rate of 0.43 mm/10 a. Precipitation mainly concentrated in May and September, accounting for 89.72% throughout the year. The rising trend of annual average sunshine hour volatile was not significant, with the highest in May and October, and the lowest in January. The declining trend in annual average wind speed was significant, with the largest in March (3.67 m/s), the lowest in November (2.20 m/s). It can be seen that this region was the most significant heating up region over the same period in China.

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