This investigation attempts to understand the eco‐hydrology of, and accordingly suggest an option to manage floodwater for agriculture in, the understudied and data‐sparse ephemeral Baraka River Basin within the hyper‐arid region of Sudan. Reference is made to the major feature of the basin, that is, the Toker Delta spate irrigation scheme. A point‐to‐pixel comparison of gridded and ground‐based data sets is performed to enhance the estimates of rainfall. Analysis of remotely sensed land use/cover data is performed. The results show a significant reduction of the grassland and barren areas explained by a significant expansion of the cropland and open shrubland (invasive mesquite trees) areas in the delta. The cotton sown area is highly dependent on the flooded area and the discharge volume in the delta. However, the area of this major crop has declined since the early 1990s in favour of cultivation of more profitable food crops. Expansion of mesquite in the delta is problematic, taking hold under increased floodwater, and can only be manged by clearance to provide crop cultivation area. There is a great potential for floodwater harvesting during the rainfall season (June to September). A total seasonal runoff volume of around 4.6 and 10.8 billion cubic metres is estimated at 90 and 50% probabilities of exceedance (reliabilities), respectively. Rather than leaving the runoff generated from rainfall events to pass to the Red Sea or be consumed by mesquite trees, a location for runoff harvesting structure in a highly suitable area is proposed. Such a structure will support any policy shifts towards planning and managing the basin water resources for use in irrigating the agricultural scheme.

中文翻译：

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在数据稀疏的流域收集洪水来管理灌溉水和豆科灌木的侵蚀：一种生态水文学方法

这项调查试图了解苏丹干旱地区内被研究不足且数据稀疏的巴拉卡河流域的巴拉卡河流域的农业生态水文，并因此提出了管理农业洪水的选择方案。参考了该盆地的主要特征，即托克三角洲的潮汐灌溉方案。对栅格化数据集和地面数据集进行点对像素比较，以增强降雨量的估算。进行遥感土地利用/覆盖数据分析。结果表明，由于三角洲的农田和灌木丛（入侵性豆科灌木树）面积显着扩大，可以解释为草原和荒地面积大大减少。棉花播种面积高度依赖于洪水地区和三角洲的排放量。然而，自1990年代初以来，主要作物的播种面积有所减少，有利于种植利润更高的粮食作物。三角洲的豆科灌木林的扩张是有问题的，在洪水增加的情况下难以为继，只能通过清理来提供作物种植面积。在雨季（6月至9月），洪水的收集潜力很大。估计季节总径流量约为4.6和108亿立方米，分别超过超标概率（可靠性）的90％和50％。提议将降雨事件产生的径流传递到红海或被豆科灌木林消耗掉，而不是将径流收集结构放置在高度合适的区域中。