地理学报 ›› 2013, Vol. 68 ›› Issue (9): 1263-1268.doi: 10.11821/dlxb201309009

• 气候变化 • 上一篇    下一篇

近50 年雅鲁藏布江流域潜在蒸散量的变化特征

杨志刚, 唐小萍, 路红亚, 马鹏飞, 洪建昌   

  1. 西藏自治区气候中心, 拉萨 850000
  • 收稿日期:2012-10-10 修回日期:2013-05-25 出版日期:2013-09-05 发布日期:2013-11-05
  • 作者简介:杨志刚(1962- ), 男, 云南迪庆州人, 高级工程师, 1986 年毕业于南京气象学院, 主要从事高原气候、卫星遥感应用。E-mail: tibetygz@126.com
  • 基金资助:
    中国气象局气象变化专项(CCSF2011-17)

The changes of potential evaportranspiration over Yarlung Zangbo River Basin during 1961-2010

YANG Zhigang, TANG Xiaoping, LU Hongya, MA Pengfei, HONG Jianchang   

  1. Climatic Center of The Tibet Autonomous Region, Lhasa 850000, China
  • Received:2012-10-10 Revised:2013-05-25 Online:2013-09-05 Published:2013-11-05
  • Contact: 唐小萍, E-mail: tang_net@126.com E-mail:tang_net@126.com
  • Supported by:
    Foundation Climate change special fund from China Meteorological Administration, No.CCSF2011-17

摘要: 采用1961-2010 年雅鲁藏布江流域6 个气象站近50 年逐日气温、气压等气象资料,利用Penman-Monteith (P-M) 模型计算了月、季及年的潜在蒸散量(PE),分析了雅江流域PE变化特征。研究表明:流域平均年、干季和湿季PE 呈微弱的增加趋势,增幅均在3.00 mm/10a 以下;PE的年代际变化表明20 世纪60 年代至80 年代,年PE有一个增加的过程,而后减少;雅江流域的PE在1981 年发生突变。

关键词: 潜在蒸发量, 变化特征, 雅鲁藏布江流域

Abstract: Based on the daily temperature and air pressure datasets recorded by 6 observation stations in the Yarlung Zangbo River Basin during the period 1961-2010, the monthly, seasonal and annual PE (potential evapotranspiration) at this basin was calculated by using Penman-Monteith method, and the changes of PE were analyzed in this paper. The main results were obtained as follows: in terms of annual, wet-seasonal and dry-seasonal variations, there was a weak increasing trend of PE at a rate of less than 3.00 mm/10a. The inter-decadal variation shows that annual PE experienced an increasing process from the 1960s to 1980s, followed by a decreasing trend. The abrupt change of PE was observed in 1981.

Key words: potential evaportranspiration, changes, Yarlung Zangbo River Basin