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当前位置: 首页 > 文章 > 呼伦贝尔市参考作物蒸散量的时空分布及其气候成因 节水灌溉 2018 (8)
Position: Home > Articles > 呼伦贝尔市参考作物蒸散量的时空分布及其气候成因 Water Saving Irrigation 2018 (8)

呼伦贝尔市参考作物蒸散量的时空分布及其气候成因

作  者：
孙云岭;杨树青;刘德平
关键词：
参考作物蒸发蒸腾量;时空分布;气候成因;呼伦贝尔市
摘  要：
参考作物蒸发蒸腾量(ET0)是制定作物灌溉制度与灌溉工程规划、设计的重要依据.基于1961-2014年呼伦贝尔市7个典型站点以及其周边隶属于黑龙江省的6个站点的农业气象观测资料,利用国际粮农组织FAO推荐的Penman-Monteith公式计算ET0,采用克里金法进行空间差值,利用MATLAB进行Mann-Kendall检验,采用SPSS对ET0及气候因子进行相关分析.结果表明:(1)呼伦贝尔市作物全生育期及逐月ET0的空间变化趋势呈北低南高之势;ET0随时间推移呈逐月递减趋势,呼伦贝尔市南部地区5月ET0高达158 mm.(2)除东南地区外,全生育期ET0年际间线性趋势与多项式趋势一致,基本呈现上升趋势;除5、6月份生育期内其他月份ET0均有上升趋势.(3)逐月及全生育期ET0突变检验结果均为正值,6月和9月各有两个站点上升趋势显著(U>Ua).(4)ET0变化与相对湿度为负相关,与其他气象因子均呈正相关关系,其中气温与水气压是影响ET0最大的两个气象因素.
作  者：
SUN Yun-ling;YANG Shu-qing;LIU De-ping;College of Water Conservancy and Civil Engineering,Inner Mongolia Agricultural University;School of Water Conservancy and Civil Engineering,Northeast Agricultural University;
单  位：
SUN Yun-ling%YANG Shu-qing%LIU De-ping%College of Water Conservancy and Civil Engineering,Inner Mongolia Agricultural University%School of Water Conservancy and Civil Engineering,Northeast Agricultural University
关键词：
reference crop evapotranspiration;;temporal and spatial distribution;;Penman-Monteith formula;;Hulun Buir
摘  要：
The agricultural meteorological observation data of 6 weather stations in Hulun Buir and 7 typical stations in Heilongjiang Province in 1961-2014 was estimated by using Penman-Monteith equation recommended by FAO. The spatial distribution of ET_0 was obtained by GIS and Kriging method,the MATLAB software was used for Mann-Kendall test,and the SPSS software was used for correlation analysis of ET_0 and its climate factors. The results shows that:(1) in Hulun Buir,the spatial change of the ET_0 during the whole growth period and the monthly ET_0 shows a increase trend from north to south; the ET_0 decreases from month to month,and the ET_0 is up to 158 mm in May in south area of Hulun Buir.(2) Except for Zhalantun and Morin Dawa area,the inter-annual variability of ET_0 has the same linear trend and polynomial trend; the monthly ET_0 increases during the whole growth period except for May and June.(3) The inter-annual variability of monthly ET_0 and the ET_0 during and the whole growth period show a increase trend; and the ET_0 values of two sites rise significantly on June and September( U > Ua).(4) The ET_0 change is negatively correlated with relative humidity, while positively correlated with other meteorological factors,in which air temperature and water pressure are the two meteorological factors affecting ET_0 the most.

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