地理科学

地理科学 ›› 1995, Vol. 15 ›› Issue (1): 1-7,99.doi: 10.13249/j.cnki.sgs.1995.01.1

• 论文 •    下一篇

青藏高原降水中δ18O与温度和降水量的关系

章新平1, 姚檀栋2   

  1. 1. 湖南师范大学资源与环境学系, 长沙410081;
    2. 中国科学院兰州冰川冻土研究所, 兰州730000
  • 收稿日期:1994-03-01 出版日期:1995-01-20 发布日期:1995-01-20
  • 基金资助:
    国家自然科学基金;中国科学院冰冻圈动态变化基础研究资助项目

RELATIONS OF δ18O IN PRECIPITATONWITH TEMPERATURE AND PRECIPITATIONAMOUNT IN QINGHAI-XIZANG PLATEAU

Zhang Xinping1, Yao Tandong2   

  1. 1. Department of Geography, Hunan Normal University, Changsha 410081;
    2. Lanzhou Institute of Glaciology and Geocryology, the Chinese Academy of Sciences, Lanzhou 730000
  • Received:1994-03-01 Online:1995-01-20 Published:1995-01-20

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摘要： 青藏高原大气降水中δ18O与取样温度存在显著的正相关关系.当温度大于等于7-3℃时,沱沱河降水量效应显著,当温度大于等于8.3℃时,西宁降水量效应显著.取样站δ18O低温度、降水量的相关关系随温度、降水量的变化而变化.说明相关关系在不同的温度、湿度条件下是不同的.

Abstract: This paper attempts to reveal the regional variation features of δ18O in the Qinghai-Xizang Plateau and the relations between δ18O and influencing factors on the basis of the analyses of precipitation δ18O sampling in the stations:Tuotuohe (34°13’, 92°26’; 4533.1m a.s.1.),Delingha(37°22’N,97°22’E; 2981.5 m a.s.1.)and Xining (36°37’N, 101°46’E; 2261.2 ma.s.1.).The analytic results show that, there are marked positive correlated relations between δ18O and temperatare in the three sampling stations; the amount effect of Tuotuohe is marked while temperature is greater than and equal to 7.3℃, and so is that of Xining while 8.3℃;the correlation of δ18O in sampling stations against temperature and precipitation amount are changeable with temperatare and amount.