TY - PROGRESS IN GEOGRAPHY A1 - LI Quanfeng, LI Jicheng, YU Mingpeng, GUO Xinxin T1 - Spatial pattern of gully erosion control urgency in black soil farming area Y1 - 2021-09-28 00:00:00.0 JF - PROGRESS IN GEOGRAPHY JO - PROGRESS IN GEOGRAPHY SP - 1208 EP - 1219 VL - 40 IS - 7 UR - {https://www.progressingeography.com/EN/10.18306/dlkxjz.2021.07.011} N1 - 10.18306/dlkxjz.2021.07.011 ER -