img

官方微信

高级检索

中国沙漠 ›› 1997, Vol. 17 ›› Issue (1): 32-37.

• 研究论文 • 上一篇    下一篇

民勤沙井子地区降水特征及干旱周期分析

严平1, 韩福贵2, 俄有浩2, 仲生年2   

  1. 1. 中国科学院兰州沙漠研究所, 兰州 730000;
    2. 甘肃省治沙研究所, 武威 733000
  • 收稿日期:1995-12-15 修回日期:1996-03-15 出版日期:1996-03-20 发布日期:1996-03-20

NALYSIS ON PRECIPITATION CHARACTERISTICS AND DROUGHT PERIOD OF SHAJINGZI REGION IN MINQIN COUNTY

Yan Ping1, Han Fugui2, E Youhao2, Zhong Shenglian2   

  1. 1. Institute of Desert Research, Chinese Academy of Sciences, Lanzhou 730000;
    2. Gansu Desert Control Research Institute, Wuwei 733000
  • Received:1995-12-15 Revised:1996-03-15 Online:1996-03-20 Published:1996-03-20

摘要: 利用民勤治沙综合试验站34年(1961~1994年)降水的观测资料,对沙井子降水量、降水日数及其季节分配、降水强度、降水变率及降水保证率进行了统计分析,并采用降水变率和湿润指数(MI),应用最大熵谱方法(MEM)对该区的干旱状况作出了周期分析。

关键词: 民勤, 沙井子, 降水特征, 干旱周期

Abstract: Based on the meteorological data during 1961-1994 observed at Minqin Desert Control Experimental Station,Statistical analysis on the amount,days,seasonal distribution,intensity,variability and assurance of precipitation in Shajinqzi region was conducted.Futhermore,by means of precipitation variability and moisture index(MI),the drought period in this region was determined with Maximum Entropy Method(MEM).

Key words: Minqin, Shajingzi, Precipitation characteristic, Drought period