作 者：
姜梦琪;郭克贞;吕志远;苏佩凤;邬佳宾;彭龙;徐冰;张娜
单 位：
内蒙古农业大学;水利部牧区水利科学研究所
关键词：
潜在腾发量;计算方法;Hargreaves公式;Priestley-Taylor公式;环境因子
摘 要：
收集24 a鄂尔多斯乌审旗气象资料,以PM为标准,对比分析了Hargreaves和Priestley-Taylor两种方法在鄂尔多斯地区的潜在腾发量计算精度,并对二者的适用性进行评价。结果表明,Hargreaves的计算精度比PriestleyTaylor高,与PM相比,Hargreaves和Priestley-Taylor方法的24 a平均年绝对差分别是5.247 7和-26.853 4,相对差分别是0.646 6%和-3.308 6%,因此Hargreaves比Priestley-Taylor更适用于乌审旗地区。应用"草地腾散力自动测试系统"对乌审旗紫花苜蓿草地实际腾发量和近地层环境因子进行了观测,并进行了经线性回归分析。
译 名：
Application of ET_0 Algorithm Analysis and Impact Factor of ET_c of Artificial Grassland
作 者：
JIANG Mengqi;GUO Kezhen;LYU Zhiyuan;SU Peifeng;WU Jiabin;PENG Long;XU Bing;ZHANG Na;Inner Mongolia Agricultural University;The Ministry of Water Resources in Pastoral Areas of Water Conservancy Science Research Institute;
关键词：
potential evapotranspiration;;calculation method;;Hargreaves formula;;Priestley-Taylor formula;;environmental factors
摘 要：
Meteorological data of wushen banner of ordos city for 24 years was collected, using PM method as standard, to analyze calculation accuracy of potential evapotranspiration by Hargreaves and Priestley- Taylor calculation method separately in ordos region. The results showed that the accuracy of Hargreaves' s calculation was higher than that of Priestley-Taylor, compared with the PM method, the average absolute difference and the relative difference of Hargreaves were 5.247 7 and 0.646 6%, which were 26.853 4 and 3.308 6% for Priestley Taylor. So the method of Hargreaves was more suitable for wushen banner area than Priestley- Taylor. The actual evaporation and environment factors of surface layer were observed by ENVI data grass evapotranspiration automatic measurement system of purple flower clover in Wushen banner, and were analyzed by linear regression.
