自然资源学报

自然资源学报 ›› 2005, Vol. 20 ›› Issue (3): 361-369.doi: 10.11849/zrzyxb.2005.03.007

• 资源利用与管理 • 上一篇    下一篇

澜沧江的跨境径流量变化及其对云南降水量场变化的响应

尤卫红1, 何大明2, 索渺清1   

  1. 1. 云南大学资源环境与地球科学学院, 昆明 650091;
    2. 云南大学亚洲国际河流中心, 昆明 650091
  • 收稿日期:2004-10-19 修回日期:2005-01-24 出版日期:2005-06-25 发布日期:2005-06-25
  • 作者简介:尤卫红(1962～),男,云南省华坪县人,教授,博士生导师,主要从事天气、气候和环境变化研究.E-mail:youweih@sina.com
  • 基金资助:

    国家重点基础研究发展计划(973计划)(2003CB415100)国家重点科技攻关计划项目(2002BA901A22)云南省自然科学基金项目(2004D0005M和2001D0002Z)云南大学重点科研项目(2002Z003ZH)

Transboundary Flow Change of the Lancang River and its Response to the Variation of Precipitation Field over Yunnan

YOU Wei-hong1, HE Da-ming2, SUO Miao-qing1   

  1. 1. School of Resource Environment and Earth Science, Yunnan University, Kunming 650091,China;
    2. Asia International Rivers Center, Yunnan University, Kunming 650091,China
  • Received:2004-10-19 Revised:2005-01-24 Online:2005-06-25 Published:2005-06-25

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摘要： 随着澜沧江—湄公河次区域经济合作等重大区域合作行动的蓬勃开展,该流域水文水资源系统的变化、规律及其影响已成为国际关注和研究的热点。为考查气候变化对澜沧江—湄公河流域水文水生态环境变化影响的基本事实,以云南境内澜沧江径流量观测数据和云南的同期降水量场观测数据为基础,应用小波变换和相关系数的统计分析方法,研究了澜沧江跨境径流量变化的多时间尺度特征及其对云南降水量场变化的响应。结论为:澜沧江上下游的年径流量变化表现出了十分明显的多时间尺度变化特征,它们之间的差异主要表现在较小的时间尺度上,而对于较大的时间尺度,它们之间的变化特征是十分相似的;澜沧江上下游的年径流量变化与云南的年降水量场变化之间存在有十分显著的相关关系;云南年降水量场变化的多时间尺度特征与澜沧江上下游的年径流量变化的多时间尺度特征是相似的。总之,澜沧江的跨境径流量变化主要是由于云南降水量场的变化造成的,特别是在较大的时间尺度上,澜沧江上下游的径流量变化都对云南降水量场的变化有极好的响应特征。

关键词: 跨境径流量, 降水量场变化, 多时间尺度, 响应特征

Abstract: Recently,with the fast development of the important regional cooperati on actions in e,conomy such as the economic cooperation of Lancang,Mekong River Subregion,the changes,regularity and influence of the water resource system in t his drainage basin have become the focus of the attention and hotspot of researc h internationally.In order to investigate the basic facts which the climate chan ges influence on the hydrological and water ecological environment variations of the Lancang,Mekong River Basin,this paper studies the multi,timescale characte ,ristics of the transboundary flow variations for the Lancang River and its resp onse to the changes of precipitation field over Yunnan based on the observationa l data of the Lancang River flow and precipitation field in Yunnan and using the wavelet transform and correlation analysis method. The results show that the an nual variations for the Lancang River flow in the upper,lower reaches obviously appear multi,timescale features,their difference are mainly on the smaller times ,cales,but they are very analogous on the larger timescales.There are very signi ficant correlations between the annual variations of the Lancang River flow in t he upper,lower reaches and the precipitation field over Yunnan.The multi,timesca le characteristics of the annual precipitation over Yunnan are analogous to the ones of the Lancang River flow in the upper,lower reaches.In brief,the main reas ons for the transboundary flow variations for the Lancang River are the changes of the precipitation field over Yunnan,specially on the larger timescales,the fl ow changes of the Lancang River in the upper,lower reaches have highly response features to the variations of the precipitation field over Yunnan.

Key words: transboundary flow, precipitation field variation, multi,timescale, r esponse feature

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