怒江流域气候特征及其变化趋势

doi:10.11821/xb201205005

地理学报 ›› 2012, Vol. 67 ›› Issue (5): 621-630.doi: 10.11821/xb201205005

怒江流域气候特征及其变化趋势

樊辉, 何大明

云南大学亚洲国际河流中心, 云南省国际河流与跨境生态安全重点实验室, 昆明650091

收稿日期:2011-12-14 修回日期:2012-03-06 出版日期:2012-05-20 发布日期:2012-05-20
通讯作者: 何大明(1958-), 男, 教授, 博导, 中国地理学会会员(S110000355M),主要从事国际河流、跨境生态安全等研究。E-mail: dmhe@ynu.edu.cn
基金资助:
国家自然科学基金项目(41061010); 国家科技支撑计划重大项目课题(2011BAC09B07); 云南省应用基础研究项目(2010zc002)

Regional Climate and Its Change in the Nujiang River Basin

FAN Hui, HE Daming

Asian International Rivers Center of Yunnan University, Yunnan Key Laboratory of International Rivers and Transboundary Eco-security, Kunming 650091, China

Received:2011-12-14 Revised:2012-03-06 Online:2012-05-20 Published:2012-05-20
Supported by:
National Natural Science Foundation of China, No.41061010; National Science and Technology Support Program, No.2011BAC09B07; Applied Basic Research Foundation of Yunnan Province, No.2010zc002

摘要/Abstract

摘要： 利用怒江流域及其毗邻地区16 个气象台站长时序逐月气温和降水量数据,运用TFPW-MK (Trend-free Pre-whitening Mann-Kendall) 检验和重复迭代变化诊断等方法,分析了近几十年来怒江流域气候要素空间格局和变化特征。结果表明:(1) 怒江流域气温(年平均、年最高和年最低) 和年降水量由北向南总体呈递增,并与海拔相关性极为显著(α=0.01),且气候要素值随海拔升高而降低;(2) 降水集中度地域差异明显,西藏境内降水集中度多达60%以上,全流域降水集中期(除贡山站外) 多介于7 月下旬至8 月下旬;(3) 流域升温趋势显著,其年平均、年最高和年最低气温变化趋势多与纬度和海拔呈显著相关,其中年平均气温增幅为0.36 ℃10a;(4) 部分站点气温变化存在突变点,且其多出现于暖冬频发的20 世纪80 年代以后;(5) 年降水量总体有所增多,但变化趋势多不显著,无明显变点。

关键词: 气候变化, Mann-Kendall检验, 突变分析, 高原山地

Abstract: Long time series of monthly air temperature and precipitation data, which were recorded at 16 meteorological observation stations in the Nujiang River basin and its adjacent areas, were employed to analyze spatial distributions and changes of these meteorological elements in this basin during the past decades. In this research, TFPW-MK (Trend-free Pre-whitening Mann-Kendall) test and BFAST (Breaks For Additive Seasonal and Trend) were used to determine trends in climate data and to detect abrupt changes within the trend and seasonal components, respectively. The results show that air temperature and precipitation increased southward along the Nujiang River and heavily negatively correlated with altitude. The regional difference in PCD was obvious and higher PCD values, more than 60%, were observed in the Nujiang River basin in Tibet Autonomous Region. Precipitation-concentration time (PCT) in the study area (except for Gongshan) mainly from late July to late August. Generally speaking, the Nujiang River basin has become warmer in the past decades. The annual mean air temperature increases at a rate of 0.36 ℃/10a.

Key words: climate change, Mann-Kendall test, change point analysis, highland regions

樊辉, 何大明. 怒江流域气候特征及其变化趋势[J]. 地理学报, 2012, 67(5): 621-630.

FAN Hui, HE Daming. Regional Climate and Its Change in the Nujiang River Basin[J]. Acta Geographica Sinica, 2012, 67(5): 621-630.

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怒江流域气候特征及其变化趋势

Regional Climate and Its Change in the Nujiang River Basin

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