منابع مشابه
Evaluation of Virtual Water and Water Footprint of Crop Production (Case study: Qaleganj County)
To address the optimal use of available water resources, a revisit of water resource allocation and management is needed. Water use and water footprint of every product varies in different geographical areas due to various climate, agricultural operations and water efficiencies. Thus, more productive management schemes are to be developed. The goal of this study is to assess the virtual water a...
متن کاملGlobal effects of local food-production crises: a virtual water perspective
By importing food and agricultural goods, countries cope with the heterogeneous global water distribution and often rely on water resources available abroad. The virtual displacement of the water used to produce such goods (known as virtual water) connects together, in a global water system, all countries participating to the international trade network. Local food-production crises, having soc...
متن کاملWater and its role in food and health security--the importance of water to food production.
Water is vital to food production: every calorie of plant food requires at least one litre of water, while one calorie of meat or dairy product can require up to 10 litres of water. Water is supplied either through rainfall or through irrigation. Irrigated agriculture uses 18 per cent of agricultural land, and produces 40 per cent of agricultural products. But urbanisation, agricultural land de...
متن کاملVirtual water trade: an assessment of water use efficiency in the international food trade
Amid an increasing water scarcity in many parts of the world, virtual water trade as both a policy instrument and practical means to balance the local, national and global water budget has received much attention in recent years. Building upon the knowledge of virtual water accounting in the literature, this study assesses the efficiency of water use embodied in the international food trade fro...
متن کاملIncreasing agricultural water use efficiency to meet future food production
With the world’s population set to increase by 65% (3.7 billion) by ∼2050, the additional food required to feed future generations will put further enormous pressure on freshwater resources. This is because agriculture is the largest single user of fresh water, accounting for ∼75% of current human water use. At present ∼7% of the world’s population live in areas where water is scarce. This is p...
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ژورنال
عنوان ژورنال: Hydro Nepal: Journal of Water, Energy and Environment
سال: 2012
ISSN: 2392-4101,1998-5452
DOI: 10.3126/hn.v9i0.7080