东北地区唐代渤海古城遗址空间格局及影响因素分析
刘海洋, 付雨鑫, 殷铭徽

Spatial Pattern and Influencing Factors of the Ancient Bohai City Relics in Tang Dynasty in Northeast China
Liu Haiyang, Fu Yuxin, Yin Minghui
Table 2 Slope distribution quantity of Ancient Bohai City relics in Tang Dynasty
坡度 0~3° 3°~6° 6°~9° 9°~12° 12°~15° 15°以上
平原城 80 29 21 6 4 3
山城址 14 20 16 16 15 10
总计(占比/%) 94(40.2) 49(20.9) 37(15.8) 22(9.4) 19(8.1) 13(5.6)