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Modelling seasonal evapotranspiration of arid lands in China

机译：模拟中国干旱地区的季节性蒸散量

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摘要

The measurement of actual evapotranspiration, a key term in the water balance equation, has become a very important issue. Many good methods exist for estimating actual evapotranspiration; however, most of these require complicated inputs. Here, a simple but robust model for estimation of actual evapotranspiration in arid areas of western China is proposed. This model is a visual system with a user-friendly interface in the STELLA (a commercial software package for building numerical models) environment combined with two existing water balance equations and local soil and climate data to ensure its easy application in developing areas. Validation with field measurements revealed that the estimated values of actual evapotranspiration obtained using the model are in agreement with the observed values. Both the established Choudhury model and the proposed model produced similar estimates when the actual annual evapotranspiration is below 200 mm, but the model proposed simulates real-world conditions more precisely when the actual annual evapotranspiration is greater than 200 mm. Another advantage of the proposed model is that it uses simple and reliable climate data that are readily available from the network of weather stations in China. The simulation results could serve as a relatively good reference for water resource management in this area.
机译：实际蒸散量（水平衡方程中的关键术语）的测量已经成为一个非常重要的问题。存在许多估算实际蒸散量的好方法。但是，其中大多数都需要复杂的输入。在此，提出了一个简单而可靠的模型来估算中国西部干旱地区的实际蒸散量。该模型是一个视觉系统，在STELLA（用于构建数字模型的商业软件包）环境中具有用户友好的界面，并结合了两个现有的水平衡方程式和本地土壤和气候数据，以确保在开发区域中轻松应用。现场测量的验证表明，使用该模型获得的实际蒸散量的估计值与观测值一致。当实际的年蒸散量低于200 mm时，既定的Choudhury模型和所提出的模型都产生相似的估计，但是当实际的年蒸散量大于200 mm时，所提出的模型可以更精确地模拟现实条件。该模型的另一个优点是它使用简单而可靠的气候数据，这些数据可从中国气象站网络轻松获得。仿真结果可以为该地区的水资源管理提供较好的参考。

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  • 来源
    《Nordic hydrology》 |2011年第1期|p.40-49|共10页
  • 作者

    Yuanrun Zheng; Zhixiao Xie; Charles Roberts; Ping An; Xiangjun Li; Guangsheng Zhou; Hideyuki Shimizu; Sam Drake;

  • 作者单位

    Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing, China, 100093;

    Geosciences Department, Florida Atlantic University, Boca Raton, FL 33431, USA;

    Geosciences Department, Florida Atlantic University, Boca Raton, FL 33431, USA;

    Arid Land Research Center, Tottori university 1390 Hamasaka, Tottori, 680-0001, Japan;

    Arid Land Research Center, Tottori university 1390 Hamasaka, Tottori, 680-0001, Japan;

    Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing, China, 100093;

    National institute for Environmental studies, Tsukuba, 305-8506, Japan;

    Office of Arid Lands Studies, University of Arizona, Tucson, AZ 85719, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    actual evapotranspiration; arid regions; choudhury model; groundwater management water budget;

    机译：实际蒸散量;干旱地区乔杜里模型地下水管理用水预算;

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