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	中国参考作物腾发量时空变化特性分析
	倪广恒 ; 李新红 ; 丛振涛 ; 孙福宝 ; 刘钰 ; Ni Guangheng ; Li Xinhong ; Cong Zhentao ; Sun Fubao ; Liu Yu
	2010-06-10 ; 2010-06-10
关键词	参考作物腾发量 Penman-Monteith公式 时空变化特征 风速 蒸发 reference evapotranspiration Penman-Monteith equation temporal and spatial characteristics wind speed evaporation S311
其他题名	Temporal and spatial characteristics of reference evapotranspiration in China
中文摘要	分析参考作物腾发量的时空变化特征,有助于了解中国农业及生态需水的分布与演变规律。基于全国范围200多个气象站测站逐日气象观测资料,应用FAO-Penm an-M on te ith公式,计算得出各站历年逐日参照作物腾发量ET0。利用G IS的空间分析功能,采用反距离空间插值方法得到全国参考腾发量的分布图,统计分析了不同分区不同时段ET0的变化情况。结果表明:西北河西走廊地区和南方岭南地区的参考作物腾发量较大,最大值超过1500 mm。而东北黑龙江一带和四川盆地附近,参考作物腾发量较小,在600~700 mm之间。此外,夏季ET0的分布特征决定了全年ET0的分布特征。选取4个代表气象站,对其ET0的历年变化及其与气象因素的关系进行了分析。分析表明,受风速减小和气温增加的共同影响,干旱地区、半干旱地区和半湿润地区的参考作物腾发量呈现减少趋势,湿润地区则相对稳定。; The analysis of the temporal and spatial characteristics of reference evapotranspiration is helpful to(understand) the distribution and variability of the agricultural and ecological water requirement.Based on the daily meteorological data of more than 200 stations all over China,daily reference evapotranspiration(ET_0) was(estimated) by using the FAO Penman-Monteith equation.The spatial distribution of ET_0 was obtained by GIS and IDW method was used for spatial interpolation.In China,the largest ET_0 was found to be more than 1500 mm in northwest and south region,and the smallest is found to be 600 mm to 700 mm in the northeast region and Sichuan Basin.In addition,the ET_0 in summer contributes most of a year.Then four representative stations were selected to analyze the temporal variation of ET_0 values and the effects of meteorological data on ET_0.It is(concluded) that in recent years ET_0 in arid areas tends to become smaller because of the decreases of solar radiation and wind speed,while in humid areas ET_0 is relatively stable.; 国家自然科学基金(50509011)
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/59499]
专题	清华大学
推荐引用方式 GB/T 7714	倪广恒,李新红,丛振涛,等. 中国参考作物腾发量时空变化特性分析[J],2010, 2010.
APA	倪广恒.,李新红.,丛振涛.,孙福宝.,刘钰.,...&Liu Yu.(2010).中国参考作物腾发量时空变化特性分析..
MLA	倪广恒,et al."中国参考作物腾发量时空变化特性分析".(2010).

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