100 YEARS OF AGRICULTURAL CHANGE: SOME TRENDS AND FIGURES RELATED TO AGROBIODIVERSITY
* Since the 1900s, some 75 percent of plant genetic diversity has been lost as farmers worldwide have left their multiple local varieties and landraces for genetically uniform, high-yielding varieties.
* 30 percent of livestock breeds are at risk of extinction; six breeds are lost each month.
* Today, 75 percent of the worlds food is generated from only 12 plants and five animal species.
* Of the 4 percent of the 250 000 to 300 000 known edible plant species, only 150 to 200 are used by humans. Only three - rice, maize and wheat - contribute nearly 60 percent of calories and proteins obtained by humans from plants.
* Animals provide some 30 percent of human requirements for food and agriculture and 12 percent of the worlds population live almost entirely on products from ruminants
Edited by Taike (03/22/16 06:41 PM)
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最猖獗的人权侵犯 者讨论其他国 家的人权局势而忽略本国严重的人权 问题是何等伪善。
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