Spatial distribution and temporal trends in potential evapotranspiration over Hengduan Mountains region from 1960 to 2009

被引：34
|
作者：
Zhu Guofeng [1 ,2 ]
He Yuanqing [1 ,3 ]
Pu Tao [3 ]
Wang Xufeng [1 ,2 ]
Jia Wenxiong [4 ]
Li Zongxing [1 ,2 ]
Xin Huijuan [1 ,2 ]
机构：
[1] Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Yulong Snow Mt Glaciers & Environm Observat Stn, State Key Lab Cryosphere Sci, Lanzhou 730000, Peoples R China
[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
[3] Lanzhou Univ, Res Sch Arid Environm & Climate Change, Lanzhou 730000, Peoples R China
[4] NW Normal Univ, Coll Geog & Environm Sci, Lanzhou 730070, Peoples R China
来源：
JOURNAL OF GEOGRAPHICAL SCIENCES | 2012年 / 22卷 / 01期
基金：
中国科学院西部之光基金; 中国国家自然科学基金;
关键词：
potential evapotranspiration; Spline interpolation; Penman-Monteith model; spatial and temporal variations; Hengduan Mountains; EVAPORATION;
D O I：
10.1007/s11442-012-0912-7
中图分类号：
P9 [自然地理学];
学科分类号：
0705 ; 070501 ;
摘要：
Based on the meteorological data of 20 stations in the Hengduan Mountains region during 1961-2009, the annual and seasonal variation of potential evapotranspiration was analyzed in combination with the Penman-Monteith model. With the method of Spline interpolation under ArcGIS, the spatial distribution of potential evapotranspiration was presented to research the regional difference, and the correlation analysis was used to discuss the dominant factor affecting the potential evapotranspiration. The results indicated that the annual potential evapotranspiration showed a decreasing tendency since the 1960s, especially from the 1980s to 1990s, while it showed an increasing tendency since 2000. Regional potential evapotranspiration showed a rate of -0.17 mm a(-1). Potential evapotranspiration in north, middle and south of the Hengduan Mountains exhibited decreasing trends over the studied period, and its regional trend was on the decline from southwest to northeast.
引用
收藏
页码：71 / 85
页数：15
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