Management of irrigation water in Al-Baha Region, Saudi Arabia using simple and alternative equation to Penman-Monteith equation

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2023-07-03 DOI:10.1680/jwama.23.00012

Khalid Alkhuzai

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Abstract

Estimation of reference crop evapotranspiration (ETo) is very important in planning and scheduling irrigation water. An estimation of ETo by other simple methods is necessary with the loss of one or more meteorological factors required for estimation by the Penmen-Monteith equation. So, the aim of the study was to manage irrigation water in the Al-Baha region of Saudi Arabia using a simple equation to estimate ETo based on air temperature and an effective alternative to the Penmen-Monteith equation (PM). Four simple temperature dependent equations, Thornthwaite, Blaney-Criddle, Hamon and Linacre were selected. The results showed that the Linacre method is the best equation for estimating ETo and although the ETo rate was overestimated based on the Linacre equation compared to PM, it had the lowest error percentage (9.55%) in addition to the highest R2 (0.97). After deducing a new and accurate equation based on the Linacre equation and its high ability to estimate the ETo rate and give it values closest to the results obtained using PM in the Al-Baha region in Saudi Arabia, it can be relied upon to estimate the irrigation needs in the Al-Baha region with irrigation systems used in this region.

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利用Penman-Monteith方程的简单替代方程对沙特阿拉伯Al-Baha地区灌溉水的管理

参考作物蒸散量的估算对灌溉用水的规划和调度具有重要意义。由于Penmen-Monteith方程需要损失一个或多个气象因子，因此需要用其他简单方法估计ETo。因此，该研究的目的是使用一个简单的方程来估计基于气温的ETo，并使用一个有效的替代Penmen-Monteith方程(PM)来管理沙特阿拉伯Al-Baha地区的灌溉用水。选择了四个简单的温度相关方程:Thornthwaite、Blaney-Criddle、Hamon和Linacre。结果表明，Linacre法是估计ETo的最佳方程，尽管Linacre法的ETo率与PM相比存在高估，但其误差率最低(9.55%)，R2最高(0.97)。在Linacre方程的基础上推导出一个新的、准确的方程，该方程具有较高的估计ETo率的能力，并给出了最接近于沙特阿拉伯Al-Baha地区使用PM获得的结果的值，可以依靠该方程来估计该地区使用灌溉系统的灌溉需求。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.

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