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首页> 外文期刊>Acta Horticulturae >Integrating thermal surface temperature into Penman-Monteith model for estimating evapotranspiration and crop water stress of orange orchard in semi-arid region
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Integrating thermal surface temperature into Penman-Monteith model for estimating evapotranspiration and crop water stress of orange orchard in semi-arid region

机译：将热表面温度集成到Penman-Monteith模型中，用于估算半干旱地区橙色果园的蒸发和作物水分胁迫

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This work presents an experimental study and modelling of seasonal actual evapotranspiration (ETa) of an orange orchard, with drip irrigation, in the semi-arid region of Tensift Al Haouz (central Morocco). The experimental study consists of the measurements of different fluxes (mainly latent heat), exchanged between the soil-plant-atmosphere continuum. Modelling of ETa is based on the modified Penman-Monteith equation by introducing a simple empirical relationship between the bulk surface resistance(rs) and surface temperature (Ts). The proposed model was initially calibrated based on one year of eddy covariance measurements, collected over an orange orchard, and then validated by an independent database collected over three different years. The comparison between measured and modeled ETa showed that the proposed model correctly estimates ETa with an error less than 20%. The proposed approach (relationship between rc and Ts) employed in the Penman-Monteith model holds great potential for estimating crop water requirements and crop water stress on an operational basis and at a regional scale, since surface temperature and water status are intimately linked.
机译：这项工作提出了一个实验研究和建模橙色果园的季节性实际蒸散（ETA），在Tensift Al Haouz（摩洛哥中部）半干旱地区。实验研究包括不同助熔剂（主要潜热）的测量，在土壤 - 植物气氛之间交换。 ETA的建模是基于改进的Penman-Monteith方程，通过在散装表面电阻（RS）和表面温度（TS）之间引入简单的经验关系。拟议的模型最初是基于橙色果园收集的一年涡旋协方差测量的一年，然后由三个不同年度收集的独立数据库验证。测量和建模的ETA之间的比较显示，所提出的模型正确地估计ETA，误差小于20％。在Penman-Monteith模型中雇用的拟议方法（RC和TS之间的关系）具有估计作物水需求和作物水资源的巨大潜力，并以区域规模估计作物水分，因为表面温度和水位紧密相关。

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