Natural conditions and resources of Shitang Town

Due to the influence of paleocrustal movement, the geological strata in Shitang Town are well developed. The geological rock mass is mainly sand shale, and there are strata around the rock mass, mainly Sinian and Cambrian. Calcareous and alkaline rocks are exposed, and limestone is widely distributed, and limestone is rich in Shihuichong, Lilin and Huang Wu. Secondly, the Mesozoic coal-bearing formations between land and sea are also exposed, and the coal reserves are abundant. Daheshan and Huanggaiwubeiling are rich in raw coal reserves.

(2) Topography and landforms

Shitang is located in the west of Renhua County, and the terrain is inclined from west to east, extending from the lower part to the north and south. The west is dominated by mountains, and the east and north and south belong to low-middle hilly areas below 500 meters above sea level. The whole terrain is high in the northwest and low in the southeast, from small to large and narrow.

Mountainous areas, 300-500m above sea level, are mainly distributed in the northwest and southwest of towns, including Hou Li, Upper China-Poland, Xia Zhongbo and Guangming. It belongs to Lingnan mountainous area, with an area of 5605.4 hectares, accounting for 69.5% of the total area of the town. These mountains are all overlapping, and the mountains are all natural bamboo and wood, with high humidity.

The hills in China are mainly distributed below 300 meters above sea level, mainly on the banks of Shitang River and Guangming River, and in the wide valley areas such as Shitang Village, Water Conservancy, Tian Xin, Jingdi, Tanghe and Xiazhonggeng. The terrain is relatively flat and the land is fertile, which is the grain-producing area of the town.

(3) Mountains

The mountains in Shitang belong to Nanling Mountains, with complex terrain, mainly extending from northwest to southeast and southwest. There are 5 peaks 10 above 500 meters above sea level and 5 boundary mountains.

South Nanling has:

The altitude of Wendingzhai is 36 1 m.

Heshangling is 450 meters above sea level.

Baziling is 357 meters above sea level.

Baishui Village is 338 meters above sea level (Shuili, Dong Tang Jieshan).

Xihengzi is 3 15m above sea level (the boundary between Guangming and Qujiang).

Shiziling is 323 meters above sea level.

There are:

The back tongue is 836 meters above sea level.

Laodaotang is 702.5 meters above sea level.

Yacha Peak is 679 meters above sea level.

Niutouwo is 679 meters above sea level.

Shiwo is 6 15.3m above sea level.

Chuanlongkeng is 608.3 meters above sea level.

Yapozui is 599 meters above sea level.

Wild boar ridge is 528 meters above sea level.

Nitouzhai is 473 meters above sea level.

Dengzhanwo is 425 meters above sea level.

Zhu Weiqi is 386 meters above sea level.

There are:

Palm Dragon is 667 meters above sea level.

Tongtianzhai is 643 meters above sea level.

Jiaoyetang is 55 1 m above sea level.

Yapodou is 443 meters above sea level.

Lion flag is 425 meters above sea level.

Maolingzhai is 356 meters above sea level (Jingqun and Dong Tang Jieshan).

Huangzhushan is 777.6 meters above sea level (Shitang and Hongshan Boundary Mountain).

Guanyin lotus is 707.4 meters above sea level (upper Zhongyan and Hongshan boundary mountain).

(4) Rivers

There are 3 rivers in the town with a total length of 6 1.6 km. The mainstream rivers are Shuitianhe River and Shitang River, which pass through the abdomen of the town and flow into Dongtang River from southwest and northwest respectively.

(1) Shitang River, which originates from Guanyin Zuolian in Upper Zhong Bo, flows into Jiangtou River in Dong Tang through Shawan, Upper Zhong Bo, Lower Zhong Bo, Shitang and Water Conservancy, with a total length of about 15km.

(2) Shuitianhe, also known as Guangming River, originates from Daheshan, passes through Zhengfu, Tian Xin, Datang and Shuili, reaches Shitang River in Xiahe, Shuikou Tower, and flows into Jiangtou River, with a total length of about 1 1 km.

(3) Sixi River, originating from Sixi Mountain, flows into Dongtang River in Jiangtou through Wuzhuzui, Tanghe and Houziping. The river is 35.6 kilometers long and the basin area is 296.70 square kilometers.

⑤ Climate

Renhua, located in the southern edge of the middle subtropical zone, belongs to the humid subtropical monsoon climate and is divided into three climatic zones. Shitang is a zone with higher temperature, more heat, longer warm season, less precipitation, more meteorological disasters in summer and less cold damage in winter than other zones. Annual average temperature 19.6℃, extreme maximum temperature 40℃, extreme minimum temperature -5.4℃, annual total accumulated temperature 7 180℃, annual average rainfall 1600 mm, rainy days about 144 days, sunshine about1. Solar radiation 107.2 The average first frost day of kcal is1February 6, the average last frost day is February 12, the frost days are 19, and the average frost period is 68.

The maximum annual rainfall in 0953 was 65438+2348.3mm.

The minimum annual rainfall is19671171.4 mm.

Average rainfall for many years 1660.6mm(27-year statistics).

According to statistics for many years, the daily maximum rainfall is 1972, and on May 6th it is 162mm.

According to statistics for many years, the maximum rainfall per hour is196671.7mm.

According to statistics for many years, the maximum rainfall in 24 hours is1966 227.1mm.

The average annual precipitation per square kilometer is 970,000 cubic meters.

(vi) Land resources

The total land area of the town is more than 80 square kilometers, and the town people cover an area of 4. 1 mu.

(1) land survey

1) The mountainous area is 87,000 mu, accounting for 72% of the land area, mainly distributed in the west, south and north of the town. The low hills and ridges suitable for forestry production are about 65438 0.5 million mu, accounting for 65438 0.2% of the national territory. Terraces with gentle slope and good light and temperature conditions, rows of ridges and potholes are suitable for forestry production.

2) The hilly area (below 500 meters above sea level) is more than 2,000 mu, accounting for 18% of the land area. The elevation of 100 to 300 meters is about 15000 mu, accounting for 80% of the land area. Mainly distributed in the vast areas on both sides of Shitang River, Guangming River and Sixi River, suitable for agricultural production.

(2) Present situation of land use

1) The total cultivated land area is 1.6 1.7 million mu, accounting for 18.5% of the country's land area, and the agricultural per capita cultivated land is 1.3 mu, including paddy fields 1532 1. In 1980s, the western mountainous area (Shangzhong Mine) was mainly planted with one-year rice, and the rest was double cropping system in hilly basin villages. After 2000, most mountainous areas were abandoned as grasslands and forests.

2) The forested area is 53,000 mu, accounting for 44% of the national territory, and the forested area is 56.5.4 hectares, including 43 12 hectares, and the forest coverage rate is 89%. Forest land has deep soil layer, good water and humidity conditions and good natural growth environment for trees.

3) Rivers, ponds, reservoirs, fish ponds and other waters. *** 1080 mu, accounting for 0.9% of the land area. Shitang is the largest river, the mountain pond is mainly used for water storage and irrigation, and the reservoir is used for irrigation, power generation and drinking water.

4) More than 480 mu of barren hills and wasteland, accounting for 0.4% of the land area.

(7) Water resources

Shitang Town is abundant in rainfall, with an average annual rainfall of 65,438+0,660.6 mm, surrounded by mountains on three sides, surrounded by bamboo forests and criss-crossing streams. Shitang, paddy field and Sixi run through the town, which is rich in water resources and convenient for farmland irrigation. The upper reaches of rivers are scattered all over the valley, so natural water is used to irrigate farmland. There are permanent puddles in the irrigation area of the downstream cultivated land area. The river is easy to rise and fall, and the drought and flood are not serious. There is also abundant groundwater in the territory, which can be used for digging wells and pumping water for food.

Because the source of Shitang River is relatively flat and the drop is not big, there are only two small power stations built by reservoirs in the town, with a total installed capacity of 375 kilowatts.

(8) Mineral resources

Minerals: According to years of exploration by the geological department, there are many kinds of underground minerals in Shitang, and non-metallic minerals mainly include coal, which are distributed in Daheshan, Dashiban and orchard back. Metal minerals are: lead, zinc, iron, sulfur iron, gold and silver, copper.

Aquatic products: mainly grass carp, bighead carp, silver carp, crucian carp and Wuchang fish.

Crops: mainly food crops, mainly rice, followed by sweet potatoes, potatoes, sorghum, corn and so on. Oil crops mainly include peanuts and rape. Bean crops mainly include soybeans, mung beans, red beans and eyebrow beans. Cash crops include sugarcane, tea, tobacco and vegetables. Agricultural products mainly include high-quality rice, peanuts, horseshoes, dried bamboo shoots, straw mushrooms, Shitang rice wine and so on.

(9) cultural relics protection units

Shuangfengzhai is a national key cultural relics protection unit, and Lilin Shuikou Tower and the Monument to the Martyrs of the Great Revolution are county-level key cultural relics protection units. Shitang Village is a famous national historical and cultural village.