全球农产品贸易的虚拟耕地资源流动演变及影响因素
强文丽, 张翠玲, 刘爱民, 成升魁, 王祥, 李凡

Evolution of global virtual land flow related to agricultural trade and driving factors
QIANG Wenli, ZHANG Cuiling, LIU Aimin, CHENG Shengkui, WANG Xiang, LI Fan
表3 全球虚拟耕地流动引力模型参数估计结果
Table 3 Results of gravity regression for the whole sample
变量 模型(1) 模型(2) 模型(3)
出口国人均GDP(Gdp_e 0.403*** 0.329*** 0.277***
(0.0103) (0.00894) (0.00938)
进口国人均GDP(Gdp_i 0.362*** 0.342*** 0.372***
(0.00806) (0.00713) (0.00719)
出口国人口数量(Pop_e 0.623*** 0.102*** 0.158***
(0.00789) (0.00957) (0.0110)
进口国人口数量(Pop_i 0.635*** 0.839*** 0.788***
(0.00941) (0.0114) (0.0121)
出口国农用地面积(Land_e 0.606*** 0.573***
(0.00802) (0.00873)
进口国农用地面积(Land_i) -0.169*** -0.112***
(0.00568) (0.00743)
出口国人均可更新淡水资源量(Water_e 0.165***
(0.00806)
进口国人均可更新淡水资源量(Water_i -0.138***
(0.00640)
地理距离(Dis -0.227*** -0.479*** -0.506***
(0.0167) (0.0151) (0.0150)
是否相邻(Conti 1.024*** 0.613*** 0.580***
(0.0373) (0.0365) (0.0386)
是否签订贸易协定(RTA 0.283*** 0.370*** 0.440***
(0.0301) (0.0285) (0.0289)
常数项(Constant -23.55*** -20.59*** -20.88***
(0.421) (0.382) (0.404)
样本数(Observations 216491 211908 202212
R2 0.215 0.312 0.324