元代前期省域耕地面积重建
李美娇,何凡能,杨帆,李士成

Reconstruction of cropland area at the provincial level in the early Yuan Dynasty
LI Meijiao,HE Fanneng,YANG Fan,LI Shicheng
图6 元代至元二十七年(1290年)土地垦殖率及人口密度图
Fig. 6 The spatial distribution of reclamation rate and population density in AD 1290