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Assessment of wheat’s water footprint and virtual water trade: a case study for Turkey

机译:对小麦的水占地面积和虚拟水贸易评估 - 以土耳其为例

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Background Many countries are experiencing significant water scarcity and related problems due to limited availability, uneven distribution of water resources and high demand. Therefore, increasing water use efficiency and better management of existing resources have become substantially important. The agricultural sector is responsible for around 80% of global freshwater withdrawal. Wheat is one of the most important crops having large volumes of virtual water (VW) which is defined as the hidden water embedded in the products. Methods Water footprint (WF) is an indicator showing the total volume of freshwater consumption of a product or process. Blue water concept is defined as the amount of exploited surface and groundwater resources. Green water represents the total volume of rainwater allocated by the product. WF methodology brings a new approach to inter-regional water use and management by quantifying the amount of direct and indirect water use and tracing the hidden links between production, consumption and trade. The main objective of this study is to analyze Turkey’s national blue and green WF of wheat production, consumption and virtual water trade between 2008 and 2019. Detailed province-based quantification of wheat’s water exploitation is provided using spatial interpolation method. Results Total consumptive WF of wheat production and consumption of Turkey is calculated as 39.3 and 48.1?Gm 3 /year, respectively. The average blue and green VW contents of wheat production through Turkey are assessed to be 1161 and 748?m 3 /ton, respectively. The water footprint parameters of each province are calculated and discussed using climatic and agricultural data. VW transfer of Turkey’s international wheat trade is also analyzed. Total national water saving is calculated as 7.8?Gm 3 /year which is mostly imported from Russia. Global VW deficit due to international wheat trade is calculated to be 1.76?Gm 3 /year. Conclusion Despite its high contribution to global wheat production, increasing population and strong wheat-based diet, quantitative, comparative and up-to-date analyses of the blue and green WF and the VW transfer of wheat production in Turkey are not available. This study contributes to the national and international water management and planning studies to increase the water allocation efficiency of agricultural products.
机译:由于有限的可用性,水资源分配和高需求,许多国家由于有限,不均匀的需求而产生显着的水资源稀缺和相关问题。因此,增加水利用效率和对现有资源的更好管理已经重要意义。农业部门负责大约80%的全球淡水撤回。小麦是具有大量虚拟水(VW)的最重要的作物之一,其被定义为嵌入产品中的隐藏水。方法水占地面积(WF)是显示产品或工艺淡水消耗量总量的指标。蓝水概念被定义为利用表面和地下水资源的数量。绿水代表产品分配的雨水总量。 WF方法通过量化直接和间接用水量和追踪生产,消费和贸易之间的隐藏联系,为区域间用水和管理进行了新方法。本研究的主要目标是分析2008年至2019年间的土耳其国家蓝绿和绿色WF的小麦生产,消费和虚拟水资源。采用空间插值法提供了小麦水开采的详细量化。结果分别计算为土耳其小麦生产和消费的总消耗性WF分别计算为39.3和48.1〜10克。通过土耳其的小麦产量的平均蓝色和绿色大众VW含量分别评估为1161和748?m 3 /吨。使用气候和农业数据计算并讨论每个省的水占地面积。还分析了土耳其国际小麦贸易的大众转移。全国节省全国节水计算为7.8?总经理3 /年,主要从俄罗斯进口。由于国际小麦贸易导致的全球大众赤字计算为1.76?GM 3 /年。结论尽管其对全球小麦产量的贡献很高,但增加了人口和强大的小麦饮食,土耳其大麦生产大众饮食的数量,比较和最新分析,也不可用。这项研究有助于提高农产品水分配效率的国家和国际水管理和规划研究。

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