“一带一路”沿线国家农作物虚拟水贸易时空格局及驱动因素分析
陈良侃, 陈少辉

Analysis of Spatiotemporal Pattern and Drivers of Virtual Crops Water Trade Along the Belt and Road
Liangkan CHEN, Shaohui CHEN
表5 “一带一路”沿线国家农作物虚拟水进出口的标准差椭圆参数
Table 5 Standard deviation ellipse parameters of virtual crop water trade alone the Belt and Road
年份转角θ长轴标准差/km短轴标准差/km
进口出口净出口进口出口净出口进口出口净出口
2010年99.974113.891105.0895 160.9735 066.2064 721.5292 043.4772 241.8832 271.388
2014年99.326113.10899.2504 884.1395 260.0094 742.6351 986.8972 410.2922 382.010
2018年101.007111.65487.3284 788.3695 245.8634 826.1102 017.2512 693.1652 049.326