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【数学之美-杰出学者讲坛】2024年第3期 ||Optimal transport and Monge-Ampere equ...
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报告题目:
全球变化科学紫荆论坛第316期:Does global food trade increase or decrease land and water scarcity?
 报告人:
孙来祥 教授
美国马里兰大学,英国伦敦大学亚非学院,奥地利维也纳国际应用系统论研究所(IIASA)
报告时间:
2019-06-10 16:30
报告地点:
清华大学蒙民伟科技大楼南楼S818
主办单位:
地球系统科学系
  简介:

The well-known “factor endowment hypothesis (FEH)” implies that countries with higher scarcity in land and/or water intend to import more land-intensive and/or water-intensive goods. To more effectively test this important hypothesis, we first adopted recently available scarcity indices of land and water in the literature to distinguish scarce land and water from neutral or abundant land and water. We then incorporated land and water scarcity into multi-regional input-output analysis to quantify virtual land and water flows embodied in food trade among 140 countries/regions in 2011. The results show that while the major net exporters of virtual scarce-land are land-abundant countries, which supports the FEH, the major net exporters of virtual scarce-water were water-scarce countries, which does not support the FEH. This finding suggests that the current market forces reflect the scarcity of land resources, but does not reflect the water scarcity in the context of international trade. The reasons sustaining this distinction was discussed.


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