雅鲁藏布江流域1961-2005年气候变化趋势(英文)

编号 zgly0001586658

文献类型 期刊论文

文献题名 雅鲁藏布江流域1961-2005年气候变化趋势(英文)

作者 游庆龙  康世昌  吴艳红  闫宇平 

作者单位 InstituteofTibetanPlateauResearchCAS  InstituteofTibetanPlateauResearchCAS  InstituteofGeographicSciencesandNaturalResourcesResearchCAS  NationalClimateCenter  Beijing100085ChinaGraduateUniversityofChineseAcademyofSciencesBei 

母体文献 Journal of Geographical Sciences 

年卷期 2007年04期

年份 2007 

分类号 P467 

关键词 YarlungZangboriverbasin  climatechange  sensitivity 

文摘内容 The Yarlung Zangbo River (YR) is the highest great river in the world, and its basin is one of the centers of human economic activity in Tibet. Using 10 meteorological stations over the YR basin in 1961–2005, the spatial and temporal characteristics of temperature and precipitation as well as potential evapotranspiration are analyzed. The results are as follows. (1) The annual and four seasonal mean air temperature shows statistically significant increasing trend, the tendency is more significant in winter and fall. The warming in Lhasa river basin is most significant. (2) The precipitation is decreasing from the 1960s to the 1980s and increasing since the 1980s. From 1961 to 2005, the annual and four seasonal mean precipitation is increasing but not statistically significant, especially in fall and spring. The increasing precipitation rates are more pronounced in Niyangqu and Palong Zangbo river basins, the closer to the upper YR is, the less precipitation increasing rate would be. (3) The annual and four seasonal mean potential evapotranspiration has decreased, especially after the 1980s, and most of it happens in winter and spring. The decreasing trend is most significant in the middle YR and Nianchu river basin. (4) Compared with the Mt. Qomolangma region, Tibetan Plateau, China and global average, the magnitudes of warming trend over the YR basin since the 1970s exceed those areas in the same period, and compared with the Tibetan Plateau, the magnitudes of precipitation increasing and potential evapotranspiration decreasing are larger, suggesting that the YR basin is one of the most sensitive areas to global warming.