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首页> 外文期刊>Agricultural Water Management >Sustainable use and management of non-conventional water resources for rehabilitation of marginal lands in arid and semiarid environments
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Sustainable use and management of non-conventional water resources for rehabilitation of marginal lands in arid and semiarid environments

机译：在干旱和半干旱环境中，可持续使用和管理非传统水资源的康复恢复边缘土地

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Land and water are the most basic resources for the food production systems. However, the looming water scarcity is threatening the sustainability of food production systems and is causing the food security challenges. Crop production on marginal and degraded lands using non-conventional water resources may help achieve the food security for the future generations. Non-conventional water resources (NCW), viz. saline water, wastewater and greywater, can be used for food production systems after proper treatment for the rehabilitation of marginal and degraded lands. In this review, experiences and perspectives of use of NCW in the Middle East and North Africa (MENA) region are discussed. The availability of NCW, their quantity and potential utilization in agriculture, landscaping, and forestry have been highlighted. Apart from Saudi Arabia, Oman, United Arab Emirates (UAE), Kuwait, Qatar and Jordan, wastewater treatment facilities are limited in the MENA region. However, consumption is increasing due to population increase. The changes in soil physical, chemical and biological characteristics, with the use of untreated wastewater, are also elaborated. The pragmatic strategies for NCW treatments including desalination, wastewater treatment, reuse of agricultural drainage water, groundwater extraction and rainwater collection have also been described. Here we reviewed that, (i) Legislation should be done to encourage farmers to use NCW and to grow crop species (safflower, sorghum, millet, carrots, radish, cucumber, tomatoes, eggplant, lettuce) which accumulate relatively very low amounts of metals in their edible parts, especially in pre-urban areas. (ii) Water treatment technologies should be advocated and implemented for the use of NCW. (iii) The NCW reuse should be promoted as an integral component in every country's national development strategic plan. Safe reuse of NCW has great potential, however, that can be effectively used through wise resource planning, and environmental management and financing arrangements.
机译：陆地和水是食品生产系统最基本的资源。然而，迫在眉睫的水资源稀缺性正在威胁食品生产系统的可持续性，并导致粮食安全挑战。使用非传统水资源的边缘和退化土地上的作物生产可能有助于实现后代的粮食安全。非常规水资源（NCW），VIZ。盐水水，废水和灰水处，可用于妥善处理后的食品生产系统，以恢复边缘和退化的土地康复。在本综述中，讨论了中东和北非（MENA）地区NCW使用的经验和观点。突出了NCW的可用性，园林绿化和林业的数量和潜在利用。除沙特阿拉伯，阿曼，阿拉伯联合酋长国（阿联酋），科威特，卡塔尔和约旦，污水处理设施在梅纳地区有限。然而，由于人口增加，消费正在增加。还阐述了土壤物理，化学和生物学特性的变化，也阐述了未处理废水。还描述了NCW治疗的语用策略，包括脱盐，废水处理，农业排水，地下水提取和雨水收集。在这里，我们审查了，（i）应采取立法，鼓励农民使用NCW和种植种植物种（红花，高粱，小米，胡萝卜，萝卜，黄瓜，西红柿，茄子，生菜）积累的相对较低的金属量在他们的食用部分，特别是在城市前地区。 （ii）应倡导水处理技术，以实施NCW。 （iii）NCW重用应在每个国家国家发展战略计划中作为一个整体组成部分促进。然而，安全重用NCW具有很大的潜力，可以通过明智的资源规划和环境管理和融资安排有效地使用。

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