Administrative divisions of Zhongshan

1995 governs 9 streets and 24 towns: zhongshan port Street, Central Street, East Street, West Street, Suburban Street, Huancheng Street, Qijiang Street, Lianfeng Street, Yandun Street, sanxiang town, Sanjiao Town, Dachong Town, Xiaolan Town, Wuguishan Town, Guzhen Town, Dongfeng Town and Dongsheng Town. The municipal government is located in the East District.

In September, 1996, four streets of Central District, Yandun District, Lianfeng District and Qijiang District were merged into Central District Street; 65438+ In February of the same year, the suburban streets of Shi Qi were changed to the streets of North District.

1 998 65438+1October1,the street around the city was officially renamed South Street.

1998 revoked cuiheng village town and hengmen town, and the administrative area was merged into nanxun town.

1August, 998, the administrative region was abolished.

1999, Shalang Town was cancelled and merged into West Street, Tanbei Town was cancelled and merged into Dongsheng Town.

In May 2000, the Central Sub-district Office and the North Sub-district Office were abolished and the Shi Qi Sub-district Office was established; Wang Lang Town was abolished and merged into the people's town; Officially implemented on June 8. By the end of 2000, there were 19 towns, 4 streets and 1 development zone in the city, which governed 94 neighborhood committees and 400 village committees.

In 2002, Zhongshan administered five streets (East District, West District, Shi Qi, Huancheng and zhongshan port) and 19 towns (Hong Kong, Sanjiao, Renmin, Nankang, Sanxiang, Tanzhou, Shenwan, Banfu, Dayong, Shaxi, Henglan, Guzhen, Xiaolan and Dongfeng).

In September 2003 1, Nanxun Town was renamed nanlang town.

In June 2005 165438+ 10/0, Wuguishan Town was abolished and Wuguishan Sub-district Office was established. So far, Zhongshan has six streets and 18 towns.

At the end of 2008, the total registered population of Zhongshan City was 1464343, of which the non-agricultural population was 7726 15. It has jurisdiction over 6 streets (Shi Qi, East District, West District, Huancheng, zhongshan port and Wuguishan) and 18 towns (Port, Triangle, People, Nanlang, Sanxiang, Tanzhou, Shenwan, Banfu, Dayong, Shaxi, Henglan, Guzhen, Xiaolan, Dongfeng, Nantou and Fusha, etc. The municipal government is located on East Street.

At the end of 2009, Zhongshan City covered an area of 1770.42 square kilometers, governed 6 streets, 18 towns, 120 communities and 159 administrative villages. The municipal government is located on East Street. The terrain of Zhongshan City is like a clenched fist, long and narrow from north to south and short and narrow from east to west. Terrain configuration is divided into northern plain, central mountain and southern plain. The plain area accounts for about 68% of the city's area, the mountains account for 25%, and the rivers account for 7%. The city is surrounded by water on three sides, and its main waterways flow from northwest to southeast. More than 5,000 rivers and artificial irrigation and drainage channels are criss-crossed, interconnected and distributed in a radial fan shape with sharp corners as the apex. The topography of Zhongshan is formed by long-term climate change and wind and rain erosion on the basis of South China paraplatform, mainly alluvial plain, with low hills and terraces scattered in it. The basement of the plain is granite, which belongs to silting and floating origin.

The plain area of Zhongshan City is about 1.242 square kilometers, which is divided into three major areas by low mountains and hills: the northern plain, starting from Zhangjiabian in the east, reaching the ancient town in the west, Huangpu in the north and Shi Qi in the south, with an area of about 850 square kilometers, making it the widest plain in the city; The southern plain, also known as Jindouwan Plain, borders Zhuhai in the south and southeast, Modaomen Waterway in the southwest, and Wuguishan low hills and Baishuilin high hills in the north and northwest, covering an area of about 1 1O square kilometers, making it the second largest plain in the city. Southwest Plain, located on the east side of the middle reaches of Modaomen Waterway, covers an area of nearly 100 square kilometers, with low terrain, mostly below sea level and high groundwater level, which is a low-level soil distribution area in the city. Tidal flats are mainly distributed in the eastern coast, southwestern coast and river banks of the city, and some of them have crossed the outside of Hengmen, covering an area of about 150 square kilometers. The city's coast is 26 kilometers, close to the Lingdingyang area of the Pearl River Estuary, and most of them belong to the muddy coast. Due to the continuous downward deposition of alluvium and the continuous expansion of beach area, Xijiang River and Beijiang River estuary extend outward year by year, becoming a new alluvial plain.

Zhongshan hilly platform is located in the south of the central part of the city, covering an area of about 400 square kilometers. With Wugui Mountain as the main vein, it forms the main body of urban hilly platform with surrounding mountains. The altitude is mostly between 100 and 300m, and there are many peaks over 300m 10. There are 9 mountain ranges in China, including Zhuoqi Mountain, Qishan Mountain, Changyao Longshan Mountain, Dajian Mountain, Nantai Mountain, Zhoudongkeng Mountain, Baiyunjing Mountain, Wugui Mountain and Feiyun Dongshan Mountain, among which Wugui Mountain is the highest, with an altitude of 53 1 meter. The mountains are continuous and majestic, and the southeast slope extends to Zhuhai city. Penny Mountain is located in the west of Wugui Mountain and reaches Modaomen Waterway in the west. Its area is smaller than Wugui Mountain, and its basement is mainly granite with strong weathering resistance. The mountain is steep, with five peaks over 300 meters, and the highest peak is Baishui Linda 473 meters. The low hills in Wugui Mountain and Penny Mountain are basically covered by vegetation; There are many trees and shrubs in the valley. On the periphery of mountainous hills, the height gradually decreases, and it is a vast hill and an obvious platform with the same height, mainly distributed in Shaxi, Zhangjiabian and other towns. The platform is generally between 25 and 50 meters above sea level and has a thick weathered layer. Most of the cultural and economic activities in fruit gardens, dry fields and cities have been developed, mainly in this area. Rural settlements and highway access are also related to the platform. The density of river network in Zhongshan City is one of the larger areas in China. Waterways and rivers receive water from the west and north rivers, and the water begins to rise in April every year, and gradually drops at 5438+00 in June, and the flood season lasts for more than half a year. Northeast is the Li Hongqi waterway of Beijiang River system; The middle part is the East China Sea Waterway, and the lower branches are the Jiya Waterway and Xiaolan Waterway, which merge into the Hengmen Waterway. The west is the main stream of Xijiang River, and it goes to sea at Modaomen. Huangpu Waterway and Huangshali communicate with each other, forming a criss-crossing river network. There are 289 tributaries in the city, with a total length of 977.438+0 km.

The main waterway is Jiya Waterway, which is connected to Ronggui Waterway in the north, and the two banks start from Dongfeng Town and Fusha Town in the north. From the east coast to the north, it passes through nantou town, Maxinlianwei and Minsanliwei, joins Xiaolan Waterway at the southern end of the Great China Sea and flows into Hengmen Waterway, with a total length of 33 kilometers and a width of 200 to 300 meters. The waterway discharges the torrent of Xijiang River, and the two banks become flood control areas in Zhongshan City. Xiaolan Waterway is connected to Ma Ning Waterway in Shunde City in the north and flows into the urban area at Ying Ge Mouth. Both sides pass through Xiaolan, Tanbei and Port Town; The east coast passes through Dongfeng and Fusha Town, joins Jiya Waterway at Dananxu and flows into Hengmen Waterway to go to sea. The total length is 3 1 km and the width is 150 to 300 meters. The waterway discharges the upstream Xijiang flood, and the two banks become the main flood control areas in the city. Hengmen Waterway connects Xiaolan Waterway, Jiya Waterway and Shi Qi Waterway, passes through Zhangjiabian and Zhongshan Port Area, and flows out of the Pearl River Estuary through Hengmen. Total length 12km, width 800 ~1000 m. Huangshali is connected to Jiya Waterway in the west, flows eastward through the boundary between Huangpu and Sanjiao Town, and flows into Li Hongqi Waterway in Shatou, Shiji, with a total length of10km and a width of130 ~150m. It is the irrigation and drainage river of farmland in Huangpu Town, Sanjiao Town and Minzhong Town, and also the main flood drainage tributary of Jiya Waterway. Huangpu Waterway connects Jiya Waterway in the west and Li Hongqi Waterway in the east, with a total length of 1 1 km and a width of 100 to150m. It is the irrigation and drainage river of farmland in Huangpu and Nantou Town.

Shiqi River passes through the city center, flows northeast through the border area between suburbs and Zhangjia, flows out of Donghekou Sluice and flows into Hengmen Waterway. From west to south, it passes through Huancheng District and Banfu Town, reaches Xihekou Sluice and exits Luozhoumen, with a total length of 46 kilometers and a width of 80 to 200 meters.

Beitaixi originated in Wugui Mountain, between the wind-blown Luodai Peak and Meihua Dome. The trunk flows to the north and northwest, flows through Binglang Mountain and Shiying Bridge, turns west to Meihuakeng, flows out of Shiguta, Nankengkou, Ziniwan and other villages through manger, flows into Shi Qi through Beitai Bridge of Dadong Yangshan Guankouqi Highway, and flows around the northern foot of Huzhou Mountain. It is 23 kilometers long and 6 to 12 meters wide. The Dahuan River (small hidden surge) originates between the main peak of Wugui Mountain and the peak of Luodai, which is blown by the wind. The trunk flows to the north and northeast, and the water flowing through Huitongzi Pit in Daliao Village passes through Laowulin, exits the west fork, passes through Dahuan Village and flows into Hengmen Waterway. It is 25 kilometers long and 8 to 15 meters wide. Zhongshan is located in the south of the Tropic of Cancer, on the northern edge of the tropics, with abundant sunshine, sufficient heat and warm climate. The solar radiation angle is large, and the temperature is high all year round. The annual solar radiation is 105.3 kcal/cm? , in which the scattered radiation is 57.7 kcal/cm? The average direct radiation is 45.5 kcal/cm? . The annual total solar radiation is the strongest in July, reaching 12 kcal/cm? The weakest is February, only 5.6 kcal/cm? . Sufficient illumination time, with high-yield light energy utilization potential. Average annual illumination 1843.5 hours, accounting for 42% of the annual illumination. The least annual light hours are from early February to early April, with an average of 2.8 hours per day, and the most are from July to 10, with an average of 6.7 hours per day. The climate is warm and suitable for planting all year round. The average temperature over the years is 265438 0.8℃. The interannual average temperature has not changed much. The hottest year is July, with an average daily temperature of 28.4℃. The coldest month is 65438+ 10, and the average daily temperature is 13.2℃. The frost-free period is long and the frost days are few, with an average of only 3.5 days per year. Under the regulation of ocean airflow, the climate change in winter is alleviated. Relative humidity and evaporation. The average relative humidity for many years is 83%, the maximum value is 86% of 1957, and the minimum value is 8 1% of 1977. In a year, it changes greatly from May to June, and changes little from 65438+February to 65438+1October. The annual average evaporation is 1448. 1mm, the maximum is 197 1 year is 1605. 1mm, and the minimum is 1965/kloc.

There are many kinds of meteorological disasters in Zhongshan city, which may occur all year round, including cold wave, low temperature frost, high temperature and heat, tropical cyclone; There are both storms and floods, as well as droughts and salty tides; There are not only lightning disasters, but also strong convective weather such as tornadoes and hail. Major meteorological disasters, such as torrential rain, frontal attack of tropical cyclone, catastrophic flood, severe drought and severe chilling injury, also occur from time to time in Zhongshan.