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Geographical environment of Suining county
Suining County is located in the western border of Shaoyang City, with the north latitude of 2616 ′ ~ 27 8 ′ and the east longitude of109 49 ′ ~10 32 ′. It looks like a parallelogram, and its northern end inclines eastward. The north-south straight line is 103.5km long, and the east-west straight line is 56km wide, with a total area of 2927km2, accounting for 14. 1% of the city's total area, making it the widest county in the city. The east is adjacent to Dongkou County, Wugang City and Chengbu Miao Autonomous County from north to south. It is bordered by Qianyang County, Huitong County, Jingzhou Miao and Dong Autonomous County and Tongdao Dong Autonomous County in Huaihua from north to south.

The county boundary is the eastern edge of Yunnan-Guizhou Plateau, where the southern end of Xuefeng Mountain meets the northwest of Bashili Mountain. South, north and east are surrounded by mountains on three sides, and the middle part rises vertically, which divides the county into east and west parts; The west tilts the witch's water; Wuyang River flows in the east, and Zhongshan, middle and low mountains, hills, hills and valleys are formed in the northeast. In Suining County, mountainous areas account for 73.8%, hills account for 22.7% and valley plains account for 3.5%. Niupotou in the southeast of the highest point is1913m above sea level, and Xikou in Matang in the northwest of the lowest point is 205m above sea level.

Suining County is near Xuefeng Mountain in the north and Da Nanshan Mountain in the south. The main peaks are Gaoding Mountain, Niupotou, Jigongpo and Shenpo Mountain, among which Niupotou's altitude is 19 13m, which is the highest point in its jurisdiction. There are 94 rivers with a basin area greater than 10 square kilometer or a river length greater than 5 kilometers, with a total length of 1685. Km, the river network density is 0.58 km per square kilometer. Among them, Yuanjiang river basin accounts for 67.63% of the total area of Suining county, and Zijiang river basin accounts for 32.37%. There are mainly dancing water and Wuyang River.

Wushui originated in Beishi 'ao, which is at the junction of Hunan and Guangxi. It flows through Qingyuan, Lanrong, Baiyun Cave, Rulin Town, Shi Yang, Guanxia, Acorus calamus and Zhuzhou River in Chengbu Miao Autonomous County, and leaves the country in Hekou Township.

Gong Xihe Gong Xi originated in Zhangjiachong, Suining County, flows through Shuikou and Naxi in Dongkou County, and exits in Yuzitang. The county belongs to the subtropical monsoon humid climate zone, with no heat in summer, no severe cold in winter, large temperature difference between day and night, and obvious vertical changes in climate and vegetation. Annual daily average temperature 1348.9 hours, annual average temperature 16.7℃, 1 month average temperature 5.7℃, extreme low temperature 6.8℃( 197 1 year 1 month 30); The average temperature in July is 26.7℃, and the extreme high temperature is 40.5℃ (1971July 2 1). The annual average frost-free period is 304 days, the annual average precipitation is 1320.0mm, the minimum value is 1064.6mm (1984), and the maximum value is1679.2mm (1961. Annual precipitation accounts for 38% in summer and 15% in autumn, causing floods in early summer and droughts in early autumn.