*Vertices 4
1 "土壤学报" 0.0 0.0 0.0 x_fact 3.970223 y_fact 33.498759
2 "农业系统科学与综合研究" 0.0 0.0 0.0 x_fact 7.692308 y_fact 13.895782
3 "生态环境" 0.0 0.0 0.0 x_fact 15.384615 y_fact 31.513648
4 "自然资源学报" 0.0 0.0 0.0 x_fact 2.729529 y_fact 21.091811
*Matrix 
0.000000 0.370037 0.706047 0.000000 
0.370037 0.000000 0.520942 0.385516 
0.706047 0.520942 0.000000 0.000000 
0.000000 0.385516 0.000000 0.000000