1960-2011年长江流域潜在蒸发量的时空变化特征

doi:10.7522/j.issn.1000-0240.2013.0049

冰川冻土 ›› 2013, Vol. 35 ›› Issue (2): 408-419.doi: 10.7522/j.issn.1000-0240.2013.0049

1960-2011年长江流域潜在蒸发量的时空变化特征

郝振纯¹, 杨荣榕¹, 陈新美², 陈玺¹, 梁之豪¹, 达娃顿珠³

1. 河海大学水文水资源与水利工程科学国家重点实验室, 江苏南京 210098;
2. 邯郸市水利局, 河北邯郸 056000;
3. 西藏自治区水文水资源勘测局拉萨水文水资源勘测大队, 西藏拉萨 850000

收稿日期:2012-09-22 修回日期:2012-12-16 出版日期:2013-04-25 发布日期:2013-05-14
作者简介:郝振纯(1958-), 男, 山西翼城人, 教授, 1988年在河海大学获博士学位, 主要从事水文物理规律及流域模拟和全球变化影响研究工作. E-mail:hzchun@hhu.edu.cn
基金资助:
国家自然科学基金项目(40830639;41101015); 全球变化研究国家重大科学研究计划项目(2010CB951101); 高等学校博士学科点专项科研基金项目(20110094110013); 水文水资源与水利工程科学国家重点实验室专项(1069-50985512)资助

Tempo-Spatial Patterns of the Potential Evaporation in the Yangtze River Catchment for the Period 1960-2011

HAO Zhen-chun¹, YANG Rong-rong¹, CHEN Xin-mei², CHEN Xi¹, LIANG Zhi-hao¹, Dawa Dun-zhu³

1. State Key Laboratory of Hydrology & Water Resources and Hydraulic Engineering, Hehai University, Nanjing Jiangsu 210098, China;
2. The Bureau of Water Resources of Handan Municipality, HandanHebei 056001, China;
3. Hydrology Bureau of Tibet Autonomous Region, Lhasa Tibet 850000, China

Received:2012-09-22 Revised:2012-12-16 Online:2013-04-25 Published:2013-05-14

摘要/Abstract

摘要：

以长江流域123个气象站1960-2011年逐日气象数据为基础, 应用Penman-Monteith模型, 在ArcGIS环境下通过IDW插值法、 TFPW-MK、 R/S等方法分析了全流域潜在蒸发量变化的时空变化、趋势性和持续性, 并探讨了影响潜在蒸发量的主要气象因素.结果表明: 年潜在蒸发量自1960年以来至2002年呈波动减少趋势, 2003-2009年呈显著增加趋势, 整体为增加趋势; 其中, 上游高原区、上游盆地区、下游区年潜在蒸发量呈增加趋势, 中游区呈下降趋势, 增幅最大的是上游盆地区.四季中, 春、夏、秋季和年潜在蒸发量具有持续性, 未来将持续增加.最低气温、最高气温是影响长江流域潜在蒸发量增加的主要因子.

关键词: 长江流域, 潜在蒸发量, 变化趋势, Hurst指数, 相关分析

Abstract:

In this paper, annual and seasonal variations of potential evaporation were analyzed based on meteorological data from 123 observation stations in the Yangtze River catchment during 1960-2011, in combination with Penman-Monteith model. The changing tendency in potential evaporation over the catchment was analyzed by Mann-Kendall test with trend-free pre-whitening (TFPW-MK) analysis, Rescaled Range (R/S) analysis and method of Inverse Distance Weighted (IDW) under ArcGIS. In addition, correlation analysis was used to extract the principal factor affecting the potential evaporation. The results demonstrate that the annual potential evaporation had a decreasing tendency between 1960 and 2002, but had an increasing tendency between 2003 and 2009; in its entirety, it had an increasing tendency. Spatially, in the upper plateau region, the upper basin region and the lower reaches the annual potential evaporation had a decreasing tendency, with a large amplification in the upper basin region, while in the middle region it had a decreasing tendency. The results of R/S analysis showed that potential evaporation in spring, summer, autumn and annual potential evaporation were persistent increasing, and will be increasing. The change of potential evaporation is mainly caused by the significant increase in highest air temperature and lowest air temperature.

Key words: Yangtze River catchment, potential evaporation, changing trend, Hurst index, correlation analysis

中图分类号:

P333

郝振纯, 杨荣榕, 陈新美, 陈玺, 梁之豪, 达娃顿珠. 1960-2011年长江流域潜在蒸发量的时空变化特征[J]. 冰川冻土, 2013, 35(2): 408-419.

HAO Zhen-chun, YANG Rong-rong, CHEN Xin-mei, CHEN Xi, LIANG Zhi-hao, Dawa Dun-zhu. Tempo-Spatial Patterns of the Potential Evaporation in the Yangtze River Catchment for the Period 1960-2011[J]. JOURNAL OF GLACIOLOGY AND GEOCRYOLOGY, 2013, 35(2): 408-419.

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1960-2011年长江流域潜在蒸发量的时空变化特征

Tempo-Spatial Patterns of the Potential Evaporation in the Yangtze River Catchment for the Period 1960-2011

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