中国农产品贸易结构演化及对粮食安全的影响

王念, 程昌秀, 林耿

Evolving agricultural trade structure and its impact on food security in China

WANG Nian, CHENG Changxiu, LIN Geng

表3 平稳性检验结果

Tab. 3 Stationarity test results

变量 ADF值 检验类别 1%临界值 5%临界值 P值 变量 ADF值 检验类别 1%临界值 P值 LNY -4.3792 C, T, 3 -4.3561 -3.5950 0.0095 DLNY -4.6003 C, 0, 0 -3.7241 0.0013 LNX1 -4.6902 C, T, 2 -4.3743 -3.6032 0.0050 DLNX1 -6.7601 C, T, 0 -4.3943 0.0001 LNX2 -2.0096 C, 0, 2 -3.7115 -2.9810 0.2811 DLNX2 -5.3929 C, 0, 0 -3.7241 0.0002 LNX3 -5.3789 C, T, 2 -4.3561 -3.5950 0.0010 DLNX3 -5.3039 C, 0, 3 -3.7379 0.0003 LNX4 -2.9468 C, 0, 2 -3.7115 -2.9810 0.0536 DLNX4 -5.6757 C, 0, 3 -3.7241 0.0001 LNX5 -2.3687 C, T, 2 -4.4679 -3.6450 0.3833 DLNX5 -3.7369 0, 0, 0 -2.6607 0.0006 LNX6 -2.5537 C, 0, 2 -3.7115 -2.9810 0.1152 DLNX6 -4.9756 C, 0, 5 -3.7379 0.0006 LNX7 -1.5690 C, T, 2 -4.3561 -3.5950 0.7775 DLNX7 -5.4007 C, 0, 0 -3.7241 0.0002 LNX8 -2.3496 C, 0, 3 -3.7115 -2.9810 0.1651 DLNX8 -5.1150 C, 0, 0 -3.7241 0.0004 LNX9 -3.7336 C, T, 4 -4.4407 -3.63289 0.0412 DLNX9 -6.6975 C, T, 0 -4.3743 0.0001 LNX10 -3.0024 C, T, 0 -4.3561 -3.5950 0.1505 DLNX10 -6.5163 C, T, 3 -4.3743 0.0001