干旱区生态环境知识资源中心(Arid): 1960-2008年黑河流域参考作物蒸发蒸腾量的时空变化

Arid

	1960-2008年黑河流域参考作物蒸发蒸腾量的时空变化
其他题名	Temporal and spatial changes of reference crop evapotranspiration in the Heihe River Basin from 1960 to 2008
	张亚宁; 张勃; 王亚敏; 卓玛兰草
来源期刊	干旱区地理
ISSN	1000-6060
出版年	2011
卷号	34 期号:5 页码:779-787
中文摘要	利用1960 - 2008年黑河流域16个气象站的逐日气象资料，采用FAO推荐的Penman -Monteith公式计算流域参考作物蒸发蒸腾量（ET_0），在此基础上运用IDW插值法进行空间插值，对黑河流域ETo的时空分布和变化趋势进行了分析，并采用多元回归分析法对影响ET_0变化的主导因素进行了探讨。结果表明:黑河流域ET_0南部山区低于中、北部地区，中、南部表现为从南到北的增加趋势，北部表现为从西到东的增加趋势；ET_0主要集中在夏季和春季，秋季次之，冬季最少； ET_0的变化速率为春季>夏季>秋季>冬季；年ET_0总体上呈波动下降趋势，1967年之前呈减小趋势，之后呈增加趋势，1974年之后又呈减小趋势，1993年之后又呈增加趋势；除冬季ET_0呈微弱的增加趋势外，其他季节的ET_0均呈减小趋势；风速是影响黑河流域ET_0变化的主导因素，而影响冬季ET_0变化的主导因素是气温。
英文摘要	Water resources of the Heihe River Basin located in the semi-arid region of northwestern China are significantly limited,which has been an important and hot issue and drawing more and more attentions in recent years.Investigating spatial and temporal distributions of reference crop evapotranspiration in the Heihe River Basin would greatly helpful for irrigation water supply planning and understanding of the impact of climate change on reference crop evapotranspiration,and moreover,availability of water resources.This would gainfully benefit water saving as well as improvement in water utilization efficiency.Based on the daily data of 16 meteorological stations throughout the Heihe River Basin during the period from 1960 to 2008,daily reference crop evapotranspiration were calculated using the Penman - Monteith Method recommended by the FAO.The temporal and spatial variations of reference crop evapotranspiration in the Heihe River Basin were carefully analyzed in this study.By the method of IDW under ArcGIS the spatial distributions of reference crop evapotranspiration were drawn in order to research regional difference.Through the multiple regression method,the major climate factors which affect the temporal changes of reference crop evapotranspiration were also analyzed in detail.The results showed that the annual-average reference crop evapotranspirations in the Heihe River Basin ranged from 845 mm to 1 579 mm,and appeared as obviously spatial difference.The southern areas had the lowest values of reference crop evapotranspiration in the Heihe River Basin.Generally,the reference crop evapotranspiration showed a decreasing trend from the north to the south in the middle and southern areas,and increased from the west to the east in the northern area.In terms of season,magnitudes of reference crop evapotranspiration mainly concentrated in summer and spring,accounting for 30% and 42% of the total for a year,respectively,followed by autumn and winter.The results indicated that the annual reference crop evapotranspirations were higher than the annual-average reference crop evapotranspirations in 1970s and during the period from 2000 to 2008,and were lower in 1960s,1980s,and 1990s.The spatial distributions of reference crop evapotranspiration departure of the Heihe River Basin were different in the different regions.In general,the rate of changes in the reference crop evapotranspiration was highest in spring,showing -2.02 mm/a,which was the biggest cause of the annual reference crop evapotranspiration variation,followed by summer,autumn and winter.The annual reference crop evapotranspirations generally exhibited a decreasing trend in the Heihe River Basin in recent 49 years,and experienced the process from the decrease before 1967 to the increase since then,and to decrease after 1974 to the increase after 1993.The reference crop evapotranspiration increased weakly in winter,however,decreased in other seasons.The leading factor affecting reference crop evapotranspiration of the Heihe River Basin was wind speed.It was found that temperature was a dominant factor influencing reference crop evapotranspiration.
中文关键词	参考作物蒸发蒸腾量 ; 时空变化 ; Penman - Monteith公式 ; 黑河流域
英文关键词	reference crop evapotranspiration (ET_0) temporal and spatial change Penman - Monteith formula Heihe River Basin
语种	中文
国家	中国
收录类别	CSCD
WOS类目	METEOROLOGY ATMOSPHERIC SCIENCES
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:4327928
来源机构	西北师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/226480
作者单位	西北师范大学地理与环境科学学院, 兰州, 甘肃 730070, 中国
推荐引用方式 GB/T 7714	张亚宁,张勃,王亚敏,等. 1960-2008年黑河流域参考作物蒸发蒸腾量的时空变化[J]. 西北师范大学,2011,34(5):779-787.
APA	张亚宁,张勃,王亚敏,&卓玛兰草.(2011).1960-2008年黑河流域参考作物蒸发蒸腾量的时空变化.干旱区地理,34(5),779-787.
MLA	张亚宁,et al."1960-2008年黑河流域参考作物蒸发蒸腾量的时空变化".干旱区地理 34.5(2011):779-787.