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Estimation of the international virtual water flow of grain crop products in Korea.

机译:估计韩国粮食作物产品的国际虚拟水流量。

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摘要

The Korean 2008 self-sufficiency rate for grain was only 26.2%. Because of this, the quantity virtual water (VW) for crop product imports is much greater than that of other countries. International VW trade is especially important to Korea due to its dependency on foreign imports to maintain food security and to establish an agricultural water resource policy. Using international crop products trade statistics during 2003-2007, this study analyzed the virtual water content (VWC) and international virtual water flow (VWF) of major crops. The national water savings and global water savings were also estimated. Major grain products, including 28 products made from 13 crops, were selected for the analysis, based on the net import and export of products totaling more than 10,000 tons. VWCs were computed for the selected major crop products using the VWC of the primary crop of Korea. International VWFs were estimated using the VWC of each crop products. The amount of imported VW was 16,804 and 226 M m3 was exported, so that the net imported VW was 16,578 M m3. VW import is concentrated in wheat, rice, maize (corn), and soybean crops. A small number of countries, including the USA, China, Brazil, etc., account for over 96% of the imported VW, indicating Korea's heavy dependence on these countries. The average national water savings for Korea and the average global water savings according to crop were estimated using VW flow from international crop products trade during 2003-2007. The estimate of national water savings was 23,870.3 M m3. Three major crops, namely wheat, maize and soybean, account for 95.3% of this total VW saving. Global water savings from the VW trade amounted to 7,253.0 M m3. Korea depends heavily on VW imports concentrated in specific crops and which are primarily imported from a particular set of countries. This indicates that Korea is vulnerable to disruptions in the international grain harvest such as those caused by natural disasters such as floods and drought. Any such disruption could easily become a critical issue for governmental planners who establish food and water supply policies for Korea.
机译:韩国2008年谷物的自给率仅为26.2%。因此,用于农作物产品进口的虚拟水量(VW)远大于其他国家。大众国际贸易对韩国尤为重要,因为它依赖外国进口来维持粮食安全和制定农业水资源政策。利用2003-2007年间的国际农产品贸易统计数据,本研究分析了主要农作物的虚拟含水量(VWC)和国际虚拟含水量(VWF)。还估算了国家节水量和全球节水量。根据总计超过10,000吨产品的净进出口,选择了主要谷物产品,包括从13种农作物制成的28种产品。使用韩国原始作物的VWC计算选定主要农作物产品的VWC。国际VWF是使用每种作物的VWC估算的。大众的进口量为16,804,出口了226 M m 3 ,因此,净进口的大众量为16,578 M m 3 。大众进口主要集中在小麦,大米,玉米(玉米)和大豆作物上。少数国家,包括美国,中国,巴西等,占进口大众汽车的96%以上,这表明韩国严重依赖这些国家。韩国的平均国家节水量和全球平均的作物节水量是根据2003-2007年国际作物贸易中的大众流量估算得出的。全国节水估计为23,870.3 M m 3 。三种主要农作物,即小麦,玉米和大豆,占大众总储蓄的95.3%。大众汽车行业的全球节水量达725.30亿m m 3 。韩国严重依赖大众的进口,这些进口主要集中在特定的农作物上,而这些农作物主要是从特定国家/地区进口的。这表明韩国很容易遭受国际粮食收成的破坏,例如洪水和干旱等自然灾害造成的破坏。对于为韩国制定食品和水供应政策的政府计划者,任何此类破坏都很容易成为关键问题。

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