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                Profile of Neijiang-Physical Geography


                  Neijiang lies in the central Sichuan Basin and is surrounded by low mountains in southeastern and southwestern sides. Hills between 350m to 450m in height account for 90% of hills in Neijiang. The geological structure of Neijiang belongs to neocathaysian substance zone with small proportion of fold-and-thrust belt. The ground surface consisting of gentle purple sandstone and mudstone, subjected to long-term runoff erosion and cutting, presents mainly round and ridged-shape hills. Long and straight valleys between hills form terraced fields together with slopes. The argillaceous soil mainly comprises clay, coarse sand, arenosols, bean mud and yellow sand. These water-holding and drought-resisting soils benefit crops. The land area in Neijiang is 538,500 hectares, constituting 1.1% of land in Sichuan. Neijiang's farmland covers an area of 6,791,400 mu, namely 84.08% of Neijiang's total. The cultivated land quantity encompasses 4,118,400 mu, per capita 0.94 mu, taking up 67.14% of national average per capita cultivated land. Land for construction sprawls 1,070,500 mu which accounts for 13.23% national construction land.
                  Neijiang lies in the middle of Longquan and Huaying Mountains. Its flat terrain comprehends plains and shallow hills.? Hilly areas in Neijiang, Nanchong, Deyang and Zigong constitute hilly region in central Sichuan.The east-west span of Neijiang is 121.5km to the maximum while the north-south span is 94.7km. The average altitude of Neijiang is between 300m to 500m, indicating typical hilly landscape in central Sichuan. However, insufficient development of river network results in soil deficiency. The highest point in Neijiang is at Mount Liamu which rises 834m above sea level. Besides, Mount Liamu is also the divide between Qingxi River and Yuexi River which flow into Tuojiang and Minjiang water systems respectively. Mount Baiyun, hailed as a smaller Mount Qingcheng, is thickly forested and has 108 hills with rising peaks one after another. Crisscrossed valleys and steep cliffs come into view. The highest elevation is 733m and the relative altitude between mountains is 430m.