区域参考作物蒸发蒸腾量随地理参数变化规律研究  

The Reference Crop Evapotranspiration Varied with Geographical Parameter

作　　者：战国隆 

机构地区：[1]大禹节水(天津)有限公司,天津武清301712

出　　处：《水利科技与经济》2015年第10期13-14,共2页Water Conservancy Science and Technology and Economy

基　　金：国家科技支撑计划(2015BAD24B01);国家科技支撑计划(2015BAD20B03)

摘　　要：根据越西、小金、平武、峨眉山、成都实测的1951~2000年的气象资料和地理参数,用Penman-Monteith公式计算蒸发蒸腾量,研究ET0与地理参数之间的规律。结果表明：3~8月份,ET0随纬度的增高逐渐增大,在31纬度处于最高;8月份之后,低纬度ET0逐渐高于高纬度ET0,且随时间延续,差距逐渐拉大,纬度为28.39时,ET0最高。在424.2和506.1 m海拔高度下ET0逐月变化规律基本相同,且均在7月份达到最大值;随着海拔的增高,在中海拔地区的876.5和1 659 m两处ET0的变化规律与低海拔地区相似,但变化过程呈现一定的前移趋势;高海拔地区2 369.2 m变化曲线进一步前移,最大值与中低海拔地区相差较小。According to the meteorological data and geographical parameters in 1951-2000,calculating crop the evapotranspiration（ ET0） for Penman-Monteith model. The research ET0 between the geographic parametersand geographic regularity. Results show： March to August,increases with increasing latitude,the latitude in the highest 31; after August,gradually lower latitudes above the high latitudes,and with passage of time,gradually widening the gap between the latitude of 28. 39,the highest. 424. 2m,506. 1m altitude monthly variation under basically the same,and reached a maximum in July; with the increase of altitude,in the altitude of 876. 5m,1659 m variation of two low-altitude areas with similar but the change process presents certain forward trends; high altitude2369. 2m further forward curve,the maximum and the low altitude difference is small.

关 键 词：参考作物蒸发蒸腾量 纬度 海拔 

分 类 号：X171.1[环境科学与工程—环境科学]