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《Resources Science》 2010-01
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Analysis of Spatial Distributions and Temporal Trends in Potential Evaporation over Hexi Areas from 1960 to 2008

WANG Yamin,ZHANG Bo,DAI Shengpei,WANG Haijun,GUO Lingxia,KANG Shuyuan(Geographic and Environmental Sciences Department of Northwest Normal University,Lanzhou 730070,China)  
Hexi in Gansu Province,located in a semiarid area of northwestern China,has been drawing more and more attentions in recent years.It is essential to estimate potential evaporation(ET0) with reliable accuracy over semiarid areas where water resources are significantly limited and excessively explored.As such,a reasonable planning and management of available water resources are desirable on the basis of appropriately estimating water resources availability over the area.Investigating spatial and temporal distributions of ET0 over semiarid areas would greatly helpful for irrigation water supply planning and understanding of the impact of climate change on ET0,and moreover,availability of water resources.This would gainfully benefit water saving as well as improvement in water utilization efficiency.It is known that estimation of ET0 requires measurements of meteorological variables,such as solar radiation,air temperatures,wind velocity,and relative humidity.In the present work,the FAO 56 Penman-Monteith equation was utilized to calculate daily ET0 for seventeen meteorological stations in Hexi areas during the period 1960-2008.Spatial and temporal distribution characteristics of ET0 were carefully examined using a series of statistical methods and GIS spatial analysis techniques.The Hurst exponent was also used to forecast the trend of ET0.Causes for spatial distributions and temporal variations in ET0 were discussed in detail.Contributions of different meteorological variables to the temporal trend in ET0 were examined subsequently.Results showed that first ET0 generally exhibited a decreasing trend in Hexi areas.ET0 showed a steady decline at a rate of about 2.76 mm/a from the 1960s to the 1990s.The largest rate of the decline occurred in the 1970s at a rate of about 11.3mm/a.In general,the rate of changes in ET0 was highest in summer,showing-2.07 mm/a,followed by spring,autumn and winter.Second,ET0 showed a decreasing trend from the northwest to the southeast,the minimum happening in the Qilian Mountains.Magnitudes of ET0 mainly concentrated in spring and summer,accounting for 30% and 40% of the total for a year,respectively,followed by autumn and winter.Third,the leading factor affecting ET0 of Hexi areas was wind velocity.It was found that temperature significantly affected ET0 in spring.Forth,changes in ET0 in Hexi areas demonstrated a kind of oscillation characteristic,showing a 12-year cycle.It was also found that ET0 in Hexi areas showed a strong persistence,which indicated that the future trend in ET0 would largely depend on the past 12 years and ET0 of the areas would continuously increase.
【Fund】: 国家自然科学基金项目(编号:40961038);; 公益性行业(气象)科研专项(编号:GYHY200806021-07);; 中国科学院知识创新工程重要方向项目(编号:KZCX2-YW-Q10-4)
【CateGory Index】: P426.2
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【Citations】
Chinese Journal Full-text Database 10 Hits
1 LIU Min1, SHEN Yanjun1, ZENG Yan2, LIU Changming3 (1. Agricultural Resources Research Center, CAS, Shijiazhuang 050021, China; 2. Jiangsu Institute of Meteorological Sciences, Nanjing 210008, China; 3. Key Laboratory of Water Cycle & Related Surface Process, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China);Changing Trend of Pan Evaporation and Its Cause over the Past 50 Years in China[J];Acta Geographica Sinica;2009-03
2 ZHAO Jing (Department of Geography, East China Normal University; Key Laboratory of Urban & Environmental Dynamic and Geocomputation, Ministry of Education, Shanghai 200062, China) WANG Nai-ang (School of Resources & Environments, Lanzhou Universi;R/S ANALYSIS OF URBANIZATION EFFECT ON CLIMATE IN LANZHOU[J];Arid Land Geography;2002-01
3 FENG Xin-ling1,2,3,LUO Long-cheng3,4,5,QIU Li-li1,2,3,LIU Peng1,3,FENG Zi-li6(1 Department of the Resources & Environment Science,Mianyang Normal University(MNU),Mianyang 621000,Sichuan China;2 Laboratory for Climate Studies,China Meteorological Administration,Beijing 100081,China;3 Institute of Numerical Modeling for Environment and Climate Change,MNU;Mianyang 621000,Sichuan,China;4 National Research Center for Urban Wastewater Treatment and Resourcezation,Mianyang 621900,Sichuan,China;5 Sichuan Engineering Research Center for Sullage Treatment and Resourcezation,Mianyang 621900,Sichuan,China; 6 Civil Aviation Flight University of China;Guanghan 618307,Sichuan,China);Fractal analysis of climate change and Hurst Index experiment in Tibetan Plateau in future[J];Arid Land Geography;2008-02
4 WANG Yanjun, JIANG Tong, XU Chongyu, SHI Yafeng (Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing Jiangsu 210008, China;Graduate School of Chinese Academy of Sciences, Beijing 100039, China;Key Laboratory of Climate Change Research, China Meteorological Administration, Beijing 100081, China; Faculty of Mathematics and Natural Sciences, University of Oslo, Oslo N-0316, Norway;Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou Gansu 730000, China );Trends of Evapotranspiration in the Yangtze River Basin in 1961-2000[J];Advances in Climate Change Research;2005-03
5 CHENG Zheng-quan1,LIANG Jian-yin2,DING Yu-guo3,LIU Yan1(1.Guangdong Central Meteorological Observatory,Guangzhou 510080,China;2.Guangzhou Institute of Tropical and Marine Meteorology,CMA,Guangzhou 510080,China;3.Nanjing University of Information Science & Technology,Nanjing 210044,China);RELATIONSHIP OF INTERANNUAL OSCILLATION BETWEEN GLOBAL TEMPERATURE AND ENSO[J];Journal of Tropical Meteorology;2006-02
6 ZENG Yan1,2,QIU Xin-fa3,LIU Chang-ming4,PAN Ao-da2,Gao Ping2 (1.Nanjing Institute of Geography and Limnology,CAS,Nanjing 210008,China;2.Jiangsu Institute of Meteorlogical Sciences,Nanjing 210008,China;3.School of Remote Sensing,Nanjing University of Information Science and Technology,Nanjing 210044,China;4.Institute of Geographic Sciences and Natural Resources Research,CAS,Beijing 100101,China);Changes of pan evaporation in China in 1960-2000[J];Advances in Water Science;2007-03
7 JIA Wen-xiong1,2,HE Yuan-qing1,WANG Xu-feng1,LI Zong-xing1(1.Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy Sciences,Lanzhou730000,China;2.College of Geography and Environment Science,Northwest Normal University,Lanzhou730070,China);Temporal and spatial change of the potential evaporation over Qilian mountains and Hexi corridor from 1960 to 2006[J];Advances in Water Science;2009-02
8 LIU Shao-min 1 ,SUN Zhong-ping 1 ,LI Xiao-wen 1 ,LIU Chang-ming 2,3 (1.Research Center for Remote Sensing and GIS,Department of Geography,Beijing Normal University,Beijing100875,China;2.Institute of Environmental Sciences,Beijing Normal University,Beijing100875,China;3.Institute of Geographic Sciences and Natural Resources Research,CAS,Beijing100101,China);A comparative study on models for estimating evapotranspiration[J];Journal of Natural Resources;2003-02
9 CAI Fu~1, YU Gui-rui~2, ZHU Qing-lin~1, HE Hong-lin~2, LIU Xin-an~1,2, LI Zheng-quan~2, GUO Xue-bing~2( 1.Department of Applied Meteorology, Shenyang Agricultural University, Shenyang 110161,China;2. Institute of Geographical Science and Natural Resources Research, CAS, Beijing 100101,China);Comparison of Precisions between Spatial Methods of Climatic Factors: A Case Study on Mean Air Temperature[J];Resources Science;2005-05
10 CAI Xi-tian,XU Zong-xue,LI Zhan-ling(Key Laboratory of Water and Sediment Sciences,Ministry of Education,College of Water Sciences,Beijing Normal University,Beijing 100875,China);Analyzing Long-Term Trend of Hydrological and Meteorological Changes in Zhangweinan River Basin[J];Resources Science;2008-03
【Secondary Citations】
Chinese Journal Full-text Database 10 Hits
1 LAN Yongchao; Kang Ersi; JIN Huijun; ZHANG Shengcai;CHEN Mingzheng2; CHEN Xuelin2;(1 Lanzhou Institute of Glaciology and Geocryology, CAS, Lanzhou 730000; 2 Zhangye AdministrativeOffice of Hydrology and Water Resources of Gansu Province, Zhangye 734000);Study on the Variation Characteristics and Trend of MountainousRunoff in the Heihe River Basin[J];JOURNAL OF GLACIOLGY AND GEOCRYOLOGY;1999-01
2 LAN Yong-chao, KANG Er-si (Cold and Arid Regions Environmental and Engineering Research Institute, CAS, Lanzhou Gansu 730000, China);Changing Trend and Features of the Runoff from Mountain Areas of Some Main Rivers in the Hexi Inland Region[J];JOURNAL OF GLACIOLGY AND GEOCRYOLOGY;2000-02
3 DING Yong-jian, YE Bai-sheng, LIU Shi-yin (Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou Gansu 730000. China);Impact of Climate Change on the Alpine Streamflow During the Past 40 a in the Middle Part of the Qilian Mountains, Northwestern China[J];JOURNAL OF GLACIOLGY AND GEOCRYOLOGY;2000-03
4 WANG Jian, SHEN Yong ping, LU An xin, WANG Li hong, SHI Zheng tao (Cold and Arid Regions Environmental and Engineering Research Institute, CAS, Lanzhou Gansu 730000, China);Impact of Climate Change on Snowmelt Runoff in the Mountainous Regions of Northwest China[J];Journal of Glaciolgy and Geocryology;2001-01
5 SHEN Yong\|ping\+1, LIU Shi\|yin\+1, ZHEN Li\|li\+2, WANG Gen\|xu\+1, LIU Guang\|xiu\+1 (1. Cold and Arid Regions Environmental and Engineering Research Institute, CAS, Lanzhou Gansu 730000, China; 2.Lanzhou Medical College, Lanzhou Gansu 730000,;Fluctuations of Glacier Mass Balance in Watersheds of Qilian Mountain and Their Impact on Water Resources of Hexi Region[J];Journal of Glaciolgy and Geocryology;2001-03
6 GONG Jia-dong, LI Xiao yan (Cold and Arid Regions Environmental and Engineering Research Institute, CAS, Lanzhou Gansu 730000, China);Spatial Variation of Climate for Different Landscape Areas in the Heihe River Basin[J];Journal of Glaciolgy and Geocryology;2001-04
7 SHI Ya feng 1, SHEN Yong ping 1, HU Ru ji 2(1.Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Science, Lanzhou Gansu 730000, China; 2. Xinjiang Institute of Ecology and Geography, Chinese Academy of Scie;Preliminary Study on Signal, Impact and Foreground of Climatic Shift from Warm-Dry to Warm-Humid in Northwest China[J];Journal of Glaciolgy and Geocryology;2002-03
8 LI Dong liang 1 , WEI Li 1 , CAI Ying 1 , ZHANG Chun jie 2 , FENG Jian ying 2 ,YANG Qing 3 , YUAN Yu jiang 3 , DONG An xiang 2 (1. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou Gansu 730000, China;2. Lanzhou Institute of Arid Meteorology, Chinese Meteorology Administration, Lanzhou Gansu 730020, China; 3. rümqi Instituteof Desert Meteorology, Chinese Meteorology Administration, rümqi Xinjiang 830002, China);The Present Facts and the Future Tendency of the Climate Change in Northwest China[J];Journal of Glaciology and Geocryology;2003-02
9 SONG Lian chun 1, 2 , ZHANG Cun jie 2(1. Nanjing Institute of Meteorology, Nanjing Jiangsu 210044, China; 2. Lanzhou Institute of Arid Meteorology,China Meteorological Administration, Lanzhou Gansu 730020, China);Changing Features of Precipitation over Nothwest China During the 20th Century[J];Journal of Glaciology and Geocryology;2003-02
10 SU Hong chao 1, WEI Wen shou 2, HAN Ping 1(1. Xinjiang Hydrology and Water Resources Bureau, rümqi Xinjiang 830000, China; 2. Institute of DesertMeteorology, China Meteorological Administration, rümqi Xinjiang 830002, China);Changes in Air Temperature and Evaporation in Xinjiang during Recent 50 Years[J];Journal of Glaciology and Geocryology;2003-02
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