作者: Rattan Lal
DOI: 10.1007/978-3-319-05747-7_3
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摘要: The human population has increased more than a thousand times from 2–20 million at the dawn of settled agriculture about 10–12 millennia ago to 7.2 billion in 2013. It is projected reach 9.6 by 2050 and ~11 2100 (UN World prospects: 2012 revision. UN Department Economic Projection Section, New York, 2012)