The natural environment of Jingmen

Jingmen is located in the middle of Hubei Province, with a land span of1151'-1329' and a latitude of 30 32'-3136', the longest from east to west.

Jingmen has the beauty of Hongshan Mountain in the east, the spirit of Jingshan Mountain in the north and the richness of Jianghan Plain in the south, with beautiful mountains and rivers, outstanding people and rich products. The territory is covered with green hills in the north, rolling hills in the middle and stretching in the south. The topography of mountains, hills, plains and lakes has both advantages and disadvantages.

Jingmen has four distinct seasons, warm climate, abundant sunshine, abundant rainfall and long frost-free period, which belongs to subtropical warm monsoon climate and is very beneficial to crop growth.

The annual average temperature in the city is 16. 1℃, the annual average precipitation is 949.4 mm, and the sunshine hours are about 2000 hours.

The transition zone from Jingshan to Jianghan Plain.

The northwest and central parts are low mountains and hills, with an altitude of 200 ~ 500 meters; The east and south are plain lakes, and the ground elevation is mostly 30 ~ 50 meters.

To the east of the river is the Han River and its tributaries; The Zhanghe River system belongs to the northwest and enters Zhanghe Reservoir in the south. The south belongs to the long lake system, and all of them enter the long lake in the south.

Jingmen City is 217km away from Wuhan City; South of Jingzhou, adjacent to Jiangling, Qianjiang and Tianmen, 80 kilometers away from Jingzhou; Yichang is bordered by Chongqing and Sichuan in the west, Nanzhang, Yuan 'an and Dangyang, and is 0/20km away from Yichang/Kloc, the third largest city in Hubei. Looking north, Xiangyang, the second largest city in Hubei Province, reaches the Central Plains, connects with Yicheng and Suizhou, and is11km away from Xiangyang downtown. It is an important transportation hub connecting north and south and connecting east and west.

Jingmen is located in central Hubei, between Xiaogan, Yichang, Jingzhou, Xiangyang and Suizhou.

The city's land area is 12404 square kilometers, accounting for 6.67% of the province's land area.

Among them, jingshan county is 3,284 square kilometers, accounting for 26.48% of the city's land area; Shayang county 1999 square kilometers, accounting for16438+02% of the city's land area; Zhongxiang city is 4488 square kilometers, accounting for 36.18% of the city's land area; Dongbao District1122 (1528-406) square kilometers, accounting for 9.05% of the city's land area; Duodao District is 563(643-80) square kilometers, accounting for 4.55% of the city's land area; Zhanghe New District covers an area of 486 square kilometers, accounting for 3.92% of the city's land area; Qujialing management area is 220 square kilometers, accounting for1.77% of the city's land area; Shayang Prison Administration covers an area of 242 square kilometers, accounting for 1.95% of the city's land area.

Jingmen area is high in the east, west and north, low in the middle and south, and open to the south, forming low mountain canyons, hilly gullies and plain lakes.

Most areas of Zhongxiang and Jingshan in the northeast are located at the southern foot of Dahongshan, and the geological characteristics are folded fault-block mountains, which are mainly composed of Paleozoic and Mesozoic carbonate rocks, clastic rocks and Proterozoic metamorphic rocks, forming low mountains or hills.

The highest altitude is Zhaigongyan, Kedian Town, Zhongxiang City, with an altitude of1050m; Dongbao District in the northwest extends from Bashong to Jingshan in Baokang and Nanzhang, and the altitude drops below 1000 meters. The mountain temperature line turns from east to west to southeast, winding to form the jingshan remnant vein.

It is mainly composed of Permian-Triassic limestone, forming low mountains, hills or hills, and valleys and gullies fluctuate gently.

The highest altitude is Peishan in Li Xi Town, Dongbao District, with an altitude of 684 meters. Zhongxiang City, some areas of jingshan county and most areas of Shayang County on both sides of the Han River in south-central China are mainly distributed in Cenozoic subsidence basins, and plain lakes are formed due to river alluvial and lake siltation.

The lowest altitude is the bottom of Shayang County Lake and the riverbed of Panjiawan in Yonglong Town, jingshan county, with an altitude of 27 meters.

The area is flat, rich in soil, densely covered with lakes, interwoven with river networks and criss-crossing river embankments, and it is a concentrated grain and cotton producing area in the city.

temperature

Jingmen 15.8℃ (0.3℃ lower than last year), Zhongxiang 16.7℃ (0.6℃ higher than last year) and Jingshan 16.5℃ (0.1℃ higher than last year); On July 25th, the annual extreme maximum temperatures in Jingmen and Zhongxiang were 36.4℃ and 37.3℃ respectively, and on July 26th, it was 37℃ in Jingshan.

The annual extreme minimum temperature in Jingmen appears at 65438 0.3℃; Zhong Xiang appeared in 65438+ 10 month, and it was MINUS 4.5℃ in 65438+June. Jingshan appeared at 1.8, with a temperature of-7.6℃.

The number of days with annual maximum temperature ≥35℃ is 4 in Jingmen, 18 in Zhongxiang and 14 in Jingshan. The annual minimum temperature ≤0℃ is 32 days in Jingmen, 29 days in Zhongxiang and 35 days in Jingshan.

The temperature in June 5438+ 10 was obviously lower than that in previous years 1.8 ~ 2.6℃, and the number of days ≤0℃ was more than 20 days. The ten-day average temperature in Jingmen is the lowest in the same period since the station was established, and that in Jingshan is the lowest year since June 5438+0977.

The average seasonal temperature in spring is 0.5 ~ 65438 0.7℃, and the highest seasonal temperatures are 35.8℃ in Jingmen, 36.3℃ in Zhongxiang and 36℃ in Jingshan, all of which are the highest on record.

In summer, the average temperature in Jingmen and Jingshan is 0.4 ~ 1℃, while that in Zhongxiang is 0.4℃ higher.

At the beginning of August, the temperature was obviously low. Jingmen is 4.6℃ lower, the lowest in the same period in recent 20 years, and Jingshan is 3.5℃ lower, the lowest in history since the station was established.

The average temperature in autumn is 0 ~ 0.4℃ higher.

However, the temperature in September was obviously low. The monthly average temperature in Beijing, China and Beijing stations is the lowest in the past 30 years, and the annual average temperature in Jingmen station is 18.6℃, which is the lowest since the establishment of 1958 station.

deposit

The annual precipitation is 696.9 mm in Jingmen (26.6% less than last year), 684.4 mm in Zhongxiang (29.5% less than last year) and 707.4 mm in Jingshan (34.7% less than last year).

The number of rainy (snowy) days in the whole year is Jingmen 89, Zhongxiang 8 1 and Jingshan 93. There were 1 precipitation events at Jingmen Station, 2 precipitation events at Zhongxiang Station and 2 precipitation events at Jingshan Station.

The precipitation is less in most months, and the precipitation is obviously less for four consecutive months from/kloc-0 to April, and the drought is obvious; After entering the flood season, the strong convective weather process is frequent, and the precipitation has increased, but from the distribution of precipitation rise, it is still mainly less; Since autumn, cold air activities have been frequent, and there have been several periods of continuous rainy weather, especially in June 5438+065438+ 10.

sunlight

The annual sunshine hours are Jingmen 160 1.2 hours (less than in previous years 10.9%), Zhongxiang 1689.7 hours (less than in previous years1.4%), Jingshan.

During the first half of the year1~ may, the sunshine was sufficient, mainly on the high side, and mainly on the low side in other months, especially in September, which decreased by 40 ~ 50%.