鄂尔多斯市潜在蒸散发时空变化分析  

Analysis of Potential Evapotranspiration with Temporal and Spatial Variation in Ordos City Based on Priestley-Taylor Model

作　　者：徐丽娟 张文鸽[2] 李皓冰[2] 谭力 XU Lijuan;ZHANG Wenge;LI Haobing;TAN Li(Ningxia Hydraulic Engineering Construction Administration Bureau,Yinchuan 750002,China;Ye11ow River Institute of Hydraulic Research,Zhengzhou 450003,China;School of Water Conservancy and Environment,Zhengzhou University,Zhengzhou 450001,China)

机构地区：[1]宁夏水利工程建设管理局,宁夏银川750002 [2]黄河水利科学研究院,河南郑州450003 [3]郑州大学水利与环境学院,河南郑州450001

出　　处：《人民黄河》2018年第9期53-57,共5页Yellow River

基　　金：国家重点研发计划项目(2016YFC0400900;2016YFC0400904)

摘　　要：依据Priestley-Taylor潜在蒸散发量计算模型,在MODIS、GLDAS等多源遥感数据基础上,对鄂尔多斯市2001—2012年的地表潜在蒸散发进行了模拟。结果表明:基于多源遥感数据的Priestley-Taylor模型对鄂尔多斯市潜在蒸散发的模拟效果较好;从时间序列上看,鄂尔多斯市2001—2012年潜在蒸散发量总体呈增长趋势,增长率为8.26 mm/a;7月潜在蒸散发量为170.44 mm,为全年最大值,5—8月潜在蒸散发量占全年的55.56%;从空间分布上看,鄂尔多斯市潜在蒸散发主要发生在草地、沙漠和耕地,三者的潜在蒸散发量分别占总量的50.62%、34.58%、14.35%。Based on MODIS,GLDAS and other sources of multi-source remote sensing data,the surface potential evapotranspiration in Ordos City from 2001 to 2012 was simulated according to Priestley-Taylor potential evapotranspiration calculation model by this paper.The results show that the potential evapotranspiration calculation achieves better results by using this model in Ordos City.In the time series view,the annual potential evapotranspiration in Ordos in 2001-2012 is grow-ing with a rate of 8.26 m m/a,the potential evapotranspiration in July is 170.44 mm at the annual maximum and the potential evapotranspiration from May to August occupies 55.56%of the whole year.From the view of spatial distribution,the potential evapotranspiration of Ordos City mainly comes from grassland,desert and farmland and the three accounts for 50.62%,34.58%and 14.35%of the total amount of potential evapotranspiration respectively.

关 键 词：Priest1ey-Tay1or模型 时空变化 潜在蒸散发 鄂尔多斯市 2001-2012年 

分 类 号：P426.2[天文地球—大气科学及气象学]