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Estimation of water losses through evapotranspiration of aquatic weeds in the Nile River (Case study: Rosetta Branch)

机译：估算尼罗河中水草的蒸发蒸腾造成的水损失（案例研究：Rosetta Branch）

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摘要

Aquatic weeds management and estimation of water losses from evapotranspiration must be taken into consideration in order to reduce water losses. The objective of this research is estimating the water losses through evapotranspiration of aquatic weeds in the Rosetta Branch in order to identify the quantities of water that could be saved when applying appropriate maintenance programs for aquatic weeds. To achieve the objective of this research, the research team identify areas of infection of the aquatic weeds using field visits, determine its coordinates using GPS and Satellite imagery (Landsat-8) and estimate of water losses through evapotranspiration of aquatic weeds by using the following evapotranspiration equation: ETc=ETo×Kc. The result for estimation of the average annual water losses through evapotranspiration of aquatic weeds in the Rosetta Branch during one year (from December 2015 to November 2016) were 21.3 million m3/year, 0.7 million m3/year and 1.1 million m3/year for water hyacinth, Common Reed and Torpedo grass, respectively.
机译：为了减少水的损失，必须考虑水生杂草的管理和蒸散造成的水损失的估算。这项研究的目的是估算罗塞塔分支水生植物的蒸散造成的水损失，以便确定在对水生植物实施适当的养护计划时可以节省的水量。为了达到本研究的目的，研究小组通过实地考察确定了水草的感染区域，使用GPS和卫星图像（Landsat-8）确定了其坐标，并通过以下方法估算了水草蒸散造成的水损失：蒸散方程：ETc = ETo×Kc。一年（2015年12月至2016年11月）期间，Rosetta分公司通过水草蒸发蒸腾造成的年平均失水量估算结果为：水2130万立方米/年，水70万立方米/年和110万立方米/年风信子，普通芦苇和鱼雷草。

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