忠县位于四川盆地东部,是盆地紫色丘陵川东平行岭谷地貌区的一个县。境内由金华山背斜、猫耳山背斜、方斗山背斜和拔山向斜、忠州向斜构成低山丘陵地貌。长江经忠州向斜贯穿全境。全县2177km~2,其中低山占16.8%,深丘占62.3%,浅丘占12.2%。若按坡度划分:大于30度的陡坡面积占23.5%;20度～30度占 Zhong County, located in the eastern Sichuan Basin, is a county in the basin of purple ridge east of Sichuan Province. The territory by the Jinhua anticline, cat ears Shan anticline, Fang Doosan anticline and pull the syncline, Chungju syncline constitute hilly landform. The Yangtze River runs through the whole territory of Zhongzhou syncline. The county 2177km ~ 2, of which 16.8% of low mountains, deep mound accounted for 62.3%, 12.2% of shallow mound. If divided by gradient: more than 30 degrees of steep slope area accounted for 23.5%; 20 degrees to 30 degrees