渭河上游干旱特征与降水对天水市水资源的影响

J4 ›› 2003, Vol. 21 ›› Issue (4): 50-54.

渭河上游干旱特征与降水对天水市水资源的影响

朱拥军，王秀花

天水市气象局，甘肃天水741000

收稿日期:2003-09-02 修回日期:2003-12-23 出版日期:2003-12-31 发布日期:2003-12-31
作者简介:朱拥军(1970一)，男，甘肃陇西县人，工程师，主要研究气候及其对干旱区自然环境变化的影响

The Drought Character in Upper Area of Weihe River and Precipitation Influence on Water Resource in Tianshui

SHU Yong-Jun, WANG Xiu-Hua

Tianshui meteorological Bureau,Tianshui 741000 ,China

Received:2003-09-02 Revised:2003-12-23 Online:2003-12-31 Published:2003-12-31

摘要/Abstract

摘要：

文中利用气象和水文观测资料，分析了渭河上游50 a的干早特征及降水对天水市水资源的影响，分析表明，渭河上游年降水在空间上有量的差异，但在气候变化趋势上基本一致;降水量存在17,13,11和3a的周期;水资源对气候变化有很强的敏感性，岷县降水量的年际变化对渭河水资源变化
有很强的指示性;气候阶段性变化比年际变化对水资源所造成的影响严重;未来20a渭河流域降水很可能呈缓慢上升趋势。

关键词: 渭河上游;干旱;降水变化;水资源

Abstract:

According to weather and water data，the drought character in upper area of Weihe River and recipitation influence on water resource are analyzed. The results indicate that annualprecipitation is different but climatic tendency is samefromplace to place，there is 17,13,11 and 3 annual circulationperiod，and water resource is sensible to climate variation，the annualprecipitation change in Mingxian country may cause obvious change in run一off of Weihe River. The stage climatic change do greater harm than the annual climatic change ,perhaps the precipitation over upper area of Weihe River gradually increases in following 20 years.

Key words: upper area of Weihe River, drought, precipitation variation, water resource

中图分类号:

P426.615

朱拥军, 王秀花. 渭河上游干旱特征与降水对天水市水资源的影响[J]. J4, 2003, 21(4): 50-54.

SHU Yong-Jun, WANG Xiu-Hua. The Drought Character in Upper Area of Weihe River and Precipitation Influence on Water Resource in Tianshui[J]. J4, 2003, 21(4): 50-54.