Geographical climate of guanzhuang town

Guanzhuang is located in the southeast Sichuan fold belt, which is the south of the second uplift of Wuling Mountain. It spans 28 degrees 9 minutes to 28 degrees 53 minutes north latitude and 108 degrees 43 minutes to 108 degrees 18 minutes east longitude, with Pingyang Gai in the west, Meicui in the north and Chuanhe Gaiwei Mountain Range in the northeast. Most of the eastern and western parts of the territory are high mountains and deep hills, while the middle part is shallow hills with staggered flat dams. In addition, there is a special ridge around it, and the relatively flat Guanyin Mountain, Yazhu Slope, the roof of the rock house and the big flat cover at the top also similarly narrow the mountain landform. The periphery is high, the middle part is low, and the height difference is wide, and a shallow hill basin is formed in the middle part. Most places in the territory are between 350-800 meters above sea level, and Guanyin Mountain and Yazhu Dapo in the east are116 meters above sea level, which is the highest peak in the town. Niu Jiao is 900 meters above sea level, and the lowest is the village group of Tanhe, the village head of Baiyangtuo, with an altitude of 3 15 meters. There are two streams and rivers in the territory, and the mountains and rivers are mostly arranged from northeast to southwest; Meijiang River enters from jia county Formation of Southwest Otto Neighborhood Committee, flows westward to Yuanyangzui to join Ping He Jiang, and the tributaries of Xiaoshanxi River are mostly orthogonal or oblique to the tectonic line. The landform of Guanzhuang Town can be roughly divided into three types: flat dam area, deep hilly area and shallow hilly area. The central part of Pingba Basin includes Piaoao, Guanlian, Wang Gao, Zhangba, Du Ya and Xinzhuang villages, covering an area of square kilometers, accounting for 39% of the town's area, with an altitude of 350-400 meters and a relative height of less than1000 meters, and cultivated land1000 mu, accounting for the town's area. The red rock, Guanyin, secluded land, mountains and white elephants in the east belong to deep mountains and mountains. It covers an area of 45 square kilometers, accounting for 30. % of the town area. The terrain is undulating, the soil erosion is serious, the land is less and the soil is more, the mountain is high and steep, and the cultivated land area is 9800 mu, accounting for 35% of the cultivated land area in the town. The former Xiaotang area in the northwest, including Yuanyang, Maopo, Tangdian, Baiyangtuo and other villages, belongs to low mountains and shallow hills, with an area of 4 1 km2, accounting for 10% of the whole town area. The terrain is undulating and the soil erosion is serious. There are many terraces and terraced fields, with 8500 mu of cultivated land, accounting for 25% of the total cultivated land in the town, mainly producing rice and rice.

Guanzhuang Town has a semi-humid monsoon climate with four distinct seasons due to its low latitude, topography and monsoon. The recovery in spring is unstable, with low humidity and rainy. In some years, it is cold at the end of spring and hot in summer, which is prone to summer drought before autumn, rainy after autumn and cold in winter. 1 month is the coldest month in the whole year, with an average monthly temperature of 5℃ and an average minimum temperature of 2.2℃. The average temperature in the hottest month in July is 27.5℃, the average maximum temperature is 32.3℃, 197 1 maximum temperature is 39.6℃. The annual average ground temperature is 18.7℃, and the ground temperature at the depth of 5 ~ 20cm is slightly lower than the ground temperature, which is 18. 3℃ to 65438 08.4℃; The average ground temperature is 30℃, and the average ground minimum temperature is 12.5℃, with the highest in July and the lowest in 1. The temperature of the upper soil is higher than that of the lower soil from March to September, but it is opposite from10 to February of the following year. The average annual frost-free period is 289.3 days, the longest in 82 years is 329 days, and 7 1 year is only 245 days. According to meteorological data, every rise

100 m, the annual average temperature drops by 0.6℃, the average annual temperature in Guanzhuang area is between 16℃ and 17℃, and the average annual temperatures in Guanyinshan and Dapinggai areas in the east are between 10℃ and 14℃. Guanzhuang has four distinct seasons, with the average temperature below 10℃ being winter, above 22℃ being summer, and 10℃ to 22℃ being spring and autumn. Influenced by the southwest monsoon, Guanzhuang Town is rich in precipitation, with the annual precipitation of 134 1. 1mm, and the precipitation in more than 80% years is between1100 ~1200mm, with the highest in May and July, both close to each other. 1 month at least, less than 30 mm. The distribution of precipitation is the most in summer, followed by spring, autumn and winter. 1974 Summer precipitation reached 802 mm, accounting for 59.8% of the total annual precipitation. 1959 has the least precipitation in summer, accounting for only 1.8% of the annual precipitation. There are more than 42 days of moderate rain in this town every year, and there are heavy rains all the year round from June to August, with an average annual rainfall of 2.8 days and 6500. 1September, 1979 15.5 mm rainfall, the largest rainstorm ever recorded, caused the front dam landslide of Daxi Reservoir to be 1 10 m long, 54 m wide and the crack depth 15.5 m.