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Less water, more grain in dry Hebei Province, China

机译:中国河北省缺水,粮食更多

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摘要

Correlation analysis and a water productivity indicator are used to investigate the inverse relationship between increasing grain output and declining irrigation water use in Hebei Province, People's Republic of China, especially since 2003. A rapid improvement in water productivity more than offset the decline in available water even in one of the most water-stressed areas of north China. As long as this trend continues, there is little need for concern about a grain production crisis induced by water shortage.
机译:运用相关分析和水生产率指标来研究中华人民共和国河北省(尤其是自2003年以来)的谷物产量增加与灌溉用水量减少之间的反比关系。水生产率的快速提高可以抵消可用水量的下降甚至在华北最缺水的地区之一。只要这种趋势持续下去,就几乎不必担心由缺水引起的粮食生产危机。

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