宁夏参考作物腾发量的时空特征分析  

Analysis of Temporal and Spatial Characteristics on Reference Crop Evapotranspiration in Ningxia

作　　者：冯克鹏[1,2,3] 田军仓[1,2,3] 

机构地区：[1]宁夏大学土木与水利工程学院,银川750021 [2]宁夏节水灌溉与水资源调控工程技术研究中心,银川750021 [3]旱区现代农业水资源高效利用教育部工程研究中心,银川750021

出　　处：《灌溉排水学报》2013年第5期26-29,共4页Journal of Irrigation and Drainage

基　　金：973计划前期研究专项课题(2011CB111504);水利部公益性行业科研专项经费项目(201301016-4);旱区现代农业水资源高效利用教育部创新团队(教技函[2011]20);宁夏"十一五"科技攻关项目([2006]05)

摘　　要：基于1951—2012年宁夏回族自治区24个气象站气象资料,运用Penman-Monteith模型计算参考作物蒸发蒸腾量(ET0),并分析ET0的时空变化。结果表明,宁夏全区ET0以中部干旱带为最大,南部山区最小,全区多年平均ET0为889mm/a。ET0年内分配差异较大,月ET0最大值出现在6月(130.19mm);月ET0最小值则出现在12月(25.48mm),极值比达4.11。各分区ET0变化过程相似,南部山区ET0明显最低,中部干旱带ET0最高,且ET0年际变化强度不大,变异系数较小,极值比均小于0.5。According to the meteorological data in 24 stations of the Ningxia Hui Autonomous Region from 1951 to 2012, the reference crop evapotranspiration （ETo） was calculated using the Penman-Monteith equation, and the temporal and spatial characteristics were analyzed. The results showed that in Ningxia, the top of ETo appeared in central arid zone and the lowest was in southern mountain area, and the multi- year average ETo in the whole Ningxia was 889 mm/a. The distribution of ETo in a year was not even, the top in central arid zone, and annual ETo changing slightly, whose coefficient of variation was smaller and the extreme value ratio was less than 0.5.

关 键 词：宁夏 ET0 Penman—Monteith 时空分布 等值线图 

分 类 号：S311[农业科学—作物栽培与耕作技术] S161.4[农业科学—农艺学]