Simulation of Land Surface Evapotraspiration Using Distributed Hydrological Model,Remote Sensing and GIS Technology

  • 1. State Key Laboratory of Remote Sensing Science, Institute of Remote Sensing Applications, Chinese Academy of Sicences, Beijing 100101;
    2. International Institute for Earth System Science, Nanjing University, Nanjing, Jiangsu 210093

Received date: 2005-11-14

  Revised date: 2006-02-11

  Online published: 2007-05-20


Evapotranspiration(ET) is the key factor to the research on water circulation and heat balance in the soil-vegetation-atmosphere system.In this article,a pixel based adapted DHSVM distributed hydrological model that integrates remote sensing and geographic information system was applied in the Ziwuhe River watershed in the upper Hanjiang River basin.The modeled pixel is 60 m large.Our study focused on the atmospheric and topographic correction on optical remote sensing data and utilizing 30 m resolution Landsat TM data to obtain leaf area index and the land use and land cover data.Some useful terrain factors as slope and aspect and topographic index could also be derived from digital elevation model.The results showed that the spatial pattern of ET was similarity in different temporal scales,moreover,it was found that daily ET spatial differences were more evident.The result also showed that the distributed model could be used in small basin of humid climate.

Cite this article

LIU San-Chao, ZHANG Wan-Chang, GAO Mao-Fang, LIU Qin-Huo . Simulation of Land Surface Evapotraspiration Using Distributed Hydrological Model,Remote Sensing and GIS Technology[J]. SCIENTIA GEOGRAPHICA SINICA, 2007 , 27(3) : 354 -358 . DOI: 10.13249/j.cnki.sgs.2007.03.354


[1] 张万昌,刘三超,蒋建军,等.基于GIS技术黑河流域地表通量及蒸散发遥感反演[J].海洋科学进展,2004,22 (z):138~145.
[2] 刘三超,张万昌.分布式水文模型和GIS及遥感集成研究[J].海洋科学进展,2004,22 (z):216~222.
[3] Beven K J,Kirkby M J.A physically-based variable contributing area model of basin hydrology[J].Hydrological Science Bulletin,1979,24:43-69.
[4] 李道峰,吴悦颖,刘昌明.分布式流域水文模型水量过程模拟——以黄河河源区为例[J].地理科学,2005,25 (3):299~304.
[5] 朱求安,张万昌,赵登忠.基于PRISM和泰森多边形的地形要素日降水量空间插值研究[J].地理科学,2005,25 (2):233~238.
[6] Chen J M,Chen X Y,Ju W M.Distributed hydrological model for mapping evapotranspiration using remote sensing inputs[J].Journal of Hydrology,2005,305:15-39.
[7] Wigmosta M S,Vail L C,Letternmaier D P.A distributed hydrology-vegetation model for complex terrain[J].Water resources research,1994,30 (6):1665-1679.
[8] 王守荣,黄荣辉,丁一汇,等.水文模式DHSVM与区域气候模式RegCM2/China嵌套模拟试验[J].气象学报,2002,60 (4):421~427.
[9] 刘三超,张万昌,蒋建军,等.用TM 影象和DEM获取黑河流域地表反射率和反照度[J].地理科学,2003,23 (5):585~591.
[10] 刘小平,邓孺孺,彭晓鹃.基于TM影象的快速大气校正方法[J].地理科学,2005,25 (1):87~93.
[11] 赵登忠,张万昌,刘三超.基于DEM 的地理要素PRISM空间内插研究[J].地理科学,2004,24 (2):205~211.
[12] Andersen J,Dybkjaerb G,Jensena K H,et al.Use of remotely sensed precipitation and leaf area index in a distributed hydrological model[J].Journal of Hydrology,2002,264:34-50.