秦岭—淮河南北供暖格局变化及其影响因素
李双双,延军平,武亚群,汪成博

Spatiotemporal variability of actual heating energy efficiency and its influencing factors in areas south and north of Qinling-Huaihe Line
LI Shuangshuang,YAN Junping,WU Yaqun,WANG Chengbo
图4 1960-2016年秦岭—淮河南北冬季供暖能耗指数变化格局
Fig. 4 Spatial pattern of actual heating energy consumption in areas south and north of Qinling-Huaihe Line