[1]LI Qiang,JIA Wei,GAO Guanlong,et al.Improvement of Soil Evaporation Modeling for a Populus euphratica Forest Ecosystem in the Lower Reaches of the Heihe River[J].Research of Soil and Water Conservation,2023,30(01):304-311.[doi:10.13869/j.cnki.rswc.2023.01.007]
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
30
Number of periods:
2023 01
Page number:
304-311
Column:
Public date:
2023-01-10
- Title:
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Improvement of Soil Evaporation Modeling for a Populus euphratica Forest Ecosystem in the Lower Reaches of the Heihe River
- Author(s):
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LI Qiang1, JIA Wei2, GAO Guanlong3, LIU Simin4, HUO Na1
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(1.College of Geography Science, Taiyuan Normal University, Jinzhong,Shanxi 030619, China; 2.School of Tourism and Hotel Management, Shanxi Technology and Business College, Taiyuan 030006, China; 3.College of Environment and Resource, Shanxi University, Taiyuan 030006, China; 4.Economics and Development Research Center, National Forestry Grassland Administration, Beijing 100714, China)
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- Keywords:
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soil evaporation; evapotranspiration; dual-source model; Populus euphratica
- CLC:
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S271
- DOI:
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10.13869/j.cnki.rswc.2023.01.007
- Abstract:
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Water is one of the important factors limiting the restoration of ecosystems in arid and semi-arid regions. Quantifying soil evaporation and its change trend over a long time scale is of great significance for improving water use efficiency. Based on the measured data of the Qidaoqiao Populus euphratica forest reserve in Ejin Oasis in the lower reaches of the Heihe River, we analyzed the variation trend of soil evaporation and evapotranspiration, and their correlation with the environmental factors, and simulated soil evaporation using the formula of the Shuttleworth-Wallace model and improved dual-source model. The accuracy and parameter sensitivity of each model were compared and analyzed, and the main conclusions were as follows.(1)The diurnal variation of soil evaporation and evapotranspiration increased firstly, and then decreased in each month and the whole experiment period, respectively.(2)The ratio of soil evaporation to evapotranspiration in the P. euphratica ecosystem varied from 30.2% to 72.2%.(3)Net radiation has the most significant effect on soil evaporation.(4)In the improved dual-source model, the calculation formula of soil evaporation does not need consider the calculation process of the complex resistance parameters, and has higher simulation accuracy than the traditional dual-source SW model. In this study, a dual-source optimal model for soil evaporation simulation in the forest ecosystems in arid areas is proposed, which can provide a new idea and method for soil evaporation simulation.