中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
近50年新疆参考作物蒸发蒸腾量的时空演变分析

文献类型:期刊论文

作者石鑫 ; 吴普特 ; 王玉宝 ; 赵西宁 ; 赵建民
刊名灌溉排水学报
出版日期2012
卷号31期号:01页码:10-14
关键词参考作物蒸发蒸腾量 words:reference crop evapotranspiration(ET0) 时空变化 spatiotemporal variability 新疆地区 Xinjiang Province Penman-Monteith公式 Penman
其他题名Analysis of Temporal-spatial Characteristics of Reference Evapotranspiration
中文摘要根据新疆地区53个气象站1960—2009年50年的气象资料,采用FAO推荐的Penman-Monteith公式计算了各站点逐月参考作物蒸发蒸腾量(ET0)。采用GIS反距离插值方法得到新疆参考作物蒸发蒸腾量分布图,将各站点ET0变化趋势进行聚类分析,通过Morlet小波变换、倾向率等方法探讨了时空变化特征及影响因素。结果表明,近50年新疆平均ET0呈显著减小趋势,不同区域ET0的年际变化趋势差异显著;在25~30年时间尺度上,全区平均ET0的周期振荡较为明显,经历了"多→少→多"3个循环交替过程;ET0年内分布均呈单峰状,且各站之间峰值相差很大;多年平均ET0空间分布总体上由西北向东南增加,且与地形起伏有高度的一致性。新疆大部分地区ET0变化率为负值,与"蒸发悖论"规律相符,其主要原因是风速降低对ET0的影响超过了温度上升,但1992年以来,由于温度持续升高,ET0出现了回升态势。
英文摘要Abstract:reference crop evapotranspiration(ET0)is the basic of agricultural water calculation and forecasting.
The monthly evapotranspiration of fifty-three weather stations in Xinjiang province in 1960—2009
was estimated using Penman-Monteith equation which was recommended by FAO.The spatial distribution
of ET0was obtained by GIS and IDW method was used for spatial interpolation.The ET0changing trendsof all sits are divided in to five categories through clustering analysis method.Then the spatial and temporal
 variation characteristics and influence factors of the ET0are discussed,in which,Morlet wavelet transform
 method and the trend rate are also used.The result shows that:in the past 50years,The regional average
 ET0of Xinjiang presents a significant decreasing trends.The interannual variability trends of ET0in
different areas are markedly different.The temporal variability of regional average ET0has a quasi-periodicity
 of 25~30years experiencing three alternating stages(high→low→high).ET0yearly distribution
tends to a single-peak shape,and the peak values of different stations are significant different.The general
characteristics of average years ET0space distribution is increased from northwest to southeast,and have a
highly consistency with the rolling terrain.The ET0rate in Most of the region in Xinjiang are negative,
conform to the“evaporation paradox”rule,mainly because the influence of the decreasing wind speeds to
the ET0is bigger than the increasing temperature.Since 1992,ET0in Xinjiang shown an upward trend as
the temperature rising,the ET0evolution in the future need a further forecast and research.
语种中文
公开日期2014-07-03
源URL[http://ir.iswc.ac.cn/handle/361005/5396]  
专题水土保持研究所_水保所知识产出(1956-2013)
推荐引用方式
GB/T 7714
石鑫,吴普特,王玉宝,等. 近50年新疆参考作物蒸发蒸腾量的时空演变分析[J]. 灌溉排水学报,2012,31(01):10-14.
APA 石鑫,吴普特,王玉宝,赵西宁,&赵建民.(2012).近50年新疆参考作物蒸发蒸腾量的时空演变分析.灌溉排水学报,31(01),10-14.
MLA 石鑫,et al."近50年新疆参考作物蒸发蒸腾量的时空演变分析".灌溉排水学报 31.01(2012):10-14.

入库方式: OAI收割

来源:水土保持研究所

浏览0
下载0
收藏0
其他版本

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。