地理科学

地理科学 ›› 2002, Vol. 22 ›› Issue (2): 190-195.doi: 10.13249/j.cnki.sgs.2002.02.190

• 论文 • 上一篇    下一篇

青藏高原气候变化对气候带的影响

赵昕奕1, 张惠远2, 万军1   

  1. 1. 北京大学城市与环境学系, 北京 100871;
    2. 北京大学环境科学中心, 北京 100871
  • 收稿日期:2001-01-06 修回日期:2001-03-07 出版日期:2002-03-20 发布日期:2002-03-20
  • 基金资助:
    国家重点基础研究发展规划项目(G1998040800);中国科学院青藏高原研究项目(KZ951-A1-204;KZ95T-06)资助。

The Impact of Climatic Change on the Climate Zones in the Qinghai-Tibetan Plateau

ZHAO Xin-yi1, ZHANG Hui-yuan2, WAN Jun1   

  1. 1. Department of Urban and Environmental Sicences, Peking University, Beijing 100871;
    2. Center of Environmental Science, Peking University, Beijing 100871
  • Received:2001-01-06 Revised:2001-03-07 Online:2002-03-20 Published:2002-03-20

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摘要： 已经发生和未来的全球气候变化将对自然界和人类社会产生一系列的影响,特别是全球气候要素的变化会导致气候带的变动,进而导致自然带(区)的变动并影响人类的生产、生活。在对青藏高原20世纪50年代到90年代气温变化分析的基础上,讨论了40?年来积温等气候带指标值的变化特征,并依据对未来气候情景的假设,指出未来全球气候变化背景下,青藏高原气候带的可能变动。

Abstract: The climatic change in the past and future can impact the nature and humankind, e.g. the change of climate elements can cause the change of climate zones, which will effect the natural regions and the activities of humankind. Based on the analysis of the change of temperature during the 1950s to the 1990s in the Qinghai-Tibetan Plateau, the change of the index indicating climate zones is discussed in this paper. Then the possible change of climate zones under the scenario of cliamtic change in the future is pointed out.In the past 40 years, the change of the index indicating climate zones is as below; 1) The period during which the daily mean temperature is above 10℃, is becoming longer by the rate of 2.0-4.0 d/10a in some areas in the Plateau and is unchangeable in other areas. 2) In the warm and cold times, the difference of the periods during which the daily mean temperature is above 10℃, is 0-20d. The monthly temperature in the month whose temperature is highest in a year, is larger by 0.1-2.0℃ in the warm time tham that in the cold time.Following the scenario of the 2.0℃ rising of the annual temperature in the plateau, the boundaries and areas of current climate zones will change, but the character of them is unchangeable. The change of those zones is: 1) The eastern boundary of plateau frigid zone will move westward by 1.0 degree so that the frigid zone will be limited on the west of 90°E in the future. 2) The eastern boundary of plateau sub-frigid zone will move westward by 3.0 degree and reach the 100°E; the south-eastern boundary of the sub-frigid zone will shrink towards north-west by 100km or so; the part of the plateau sub-frigid zone in the northern plateau will be small and have the character of plateau temperature zone.3) The temperature zone in the future will expand in the plateau, especially in the eastern and northern parts; meanwhile the cumulated days with those days whose temperature ≥10℃ in the future will be more and the temperature of the warmest month will rise. 4) In the future the cumulated days with those days whose temperature ≥10℃ will be more in the sub-tropical and tropical zones, but the boundaries of them are still.

中图分类号: 

  • P461