Geography of Lanjiang River Basin

Quzhou City is located in the western section of Jinqu Basin, and its landform type is typical. With Qujiang as the central axis, it is symmetrically distributed in the north and south, and the altitude gradually rises. The south and north sides are gentle hills, low hills and valley plain mountains in turn, and the terrain is generally high in the north and south, low in the west, flat in the middle and low in the east. The Xianxialing Mountains in the south are the watershed between Qiantang River and Oujiang River. The highest peak, Dalonggang, is 1500.3 meters above sea level, which is a part of the mountainous area in southern Zhejiang. Huaiyu Mountain, which enters Jiangxi in the west, is the watershed between Poyang Lake water system and Qiantang River water system in the Yangtze River. The peak of the main peak lake is 895.5 meters above sea level. Qianligang Mountain Range in the north is the watershed between Qujiang and Xin 'anjiang, with the highest peak of Baishijian at an altitude of1453.7 m.. The northwest and northern margin are the southern section of Baiji Mountain and the part of Qianligang Mountain, with many low mountains and hills; During the passage of Changshan Port, Jiangshan Port and Qujiang in the middle, there were many basins and valley plains along the river on both sides, and the terrain was gentle. The elevation of Dalonggang, the highest peak in China, is 1500.3m, and the lowest point is Xiatong Village, Longyou County, with an elevation of 33m；. Hills and mountains account for 82.9%, plains account for 12.9%, and waters account for 4.2%.

Lanxi is located in the northern edge of Jinqu Basin, geologically called "Shaoxing-Jiangshan Deep Fault Zone", and its stratigraphic distribution is quite complete. The rocks are mainly sedimentary rocks, with a small amount of intrusive rocks and subvolcanic rocks. The geological structure belongs to Quzhou sag in Zhuji, the Yangtze paraplatform fold belt in western Zhejiang. Plate structure belongs to the late Proterozoic Pacific plate subduction zone. The city belongs to a stable area where the peak value of vibration acceleration is less than 0.05g g.

The landform is a hilly basin in the middle of Zhejiang Province. Surrounded by mountains in the northeast, low mountains in the southwest meander and the central plain stretches. There are four mountains in the territory: Longmen Mountain and Jin Huashan in the north and east, Qianligang Mountain branch in the northwest and Xianxialing remnant vein in the south. Three mountains: Beishan, Nanshan and Xishan. Two basins: Jinqu Basin and Duntou Basin. A plain: Sanjiang Valley Plain. The mountainous hills are 822 square kilometers, the basin plain is 403 square kilometers and the water surface is 85 square kilometers. Since ancient times, it has been called "six mountains, one water and three fields".

All the rivers in the territory belong to Qiantang River system. Qujiang flows from west to east, and Jinhua River flows into Lanxi City from east to west, forming Lanjiang.

The urban climate belongs to the subtropical monsoon region of East Asia. Warm and humid, with four distinct seasons, high temperature in summer and autumn, cold in winter and spring, and obvious plum rain and drought. 7? September was also affected by the typhoon. It has both basin climate and vertical distribution characteristics. Annual average temperature 17.6? C annual average precipitation 1476.5mm, total sunshine hours 1766.2h, annual average wind speed 1.6m/s, annual average evaporation 1388.6mm, annual average relative humidity of 76%, and annual average frost-free period of 264 days. Superior climatic conditions create a good ecological environment, but at the same time, rainy days and droughts can easily lead to floods and droughts.

The city is located at the junction of hilly and mountainous areas in western Zhejiang and Jinqu Basin. The surface of the earth is characterized by divided and broken low hills. The geological structure in most areas belongs to Qiantang River gully belt, and the mountains belong to Tianmu Mountain, Qianligang Mountain and Longmen Mountain system. /kloc-main peak over 0/000 meters 12, mainly distributed in the northwest and southeast of China. The mountain range is generally northeast-southwest. The overall terrain is high in the northwest and southeast, low in the middle and inclined from southwest to northeast. The water system gathers from the periphery to the middle, and the main rivers flow from southwest to northeast, which is basically consistent with the trend of mountains. Mountains and hills account for 88.6% of the city's total area. The mountains in the north and west are composed of sandstone, limestone and shale from Paleozoic to Cenozoic, with obvious erosion, deep cutting and steep slopes, with a relative height difference of 400-600 meters and a slope of 30-40 degrees. There are hills below 200m in the south, with gentle terrain and round slope, which is generally below 15 degrees and wide river valley. The plain below 50 meters above sea level is 2 15 square kilometers, accounting for 9.4% of the city's total area. The valley plain is mainly distributed on the banks of Xin 'anjiang River, Shouchangjiang River and Lanjiang River, with fertile land and good irrigation and drainage conditions. It is the main agricultural area of this city, and also an important producing area of commercial livestock and poultry.

Changshan County, located in the west of Zhejiang Province, is the source of Qiantang River, the mother river of Zhejiang Province, with a total area of 1.099 square kilometers and jurisdiction over 6 towns, 5 townships and 3 streets 1.80 administrative villages with a population of 330,000. In the 23rd year of Jian 'an in the Eastern Han Dynasty (AD 2 18), the county was founded, formerly known as Ding Yang, with a history of 1800 years, with profound historical and cultural accumulation. Located in the center of the golden tourist line in the south of the Yangtze River, Huangshan Mountain, Wuyishan Mountain, Sanqingshan Mountain, Qiandao Lake and other national and provincial tourist attractions are all around, and you can enjoy the beautiful scenery of nature in Changshan. Located on the edge of Fujian, Zhejiang, Jiangxi and Anhui provinces, it is the main gateway for Zhejiang to open to the outside world, the first stop for Jiangxi to go to Zhejiang and the first stop for the central and western regions to go to the Yangtze River Delta region, and it is also an important intersection of the Yangtze River Delta, the Pan-Pearl River Delta and the Haixi Economic Zone. The county has obvious comprehensive transportation advantages, with highways, national highways and provincial highways criss-crossing and extending in all directions. It is an important transportation hub in Zhejiang in the national highway planning network. Jiujingqu Railway runs through Changshan and Tongjiang to the sea, which is the "golden channel" connecting Zhejiang with the central and western regions. The characteristic stone resources such as bluestone, flower stone and inkstone are of excellent quality, and there is the largest professional market for bluestone and flower stone in East China, which is the "hometown of ornamental stones in China". Geological relics are of great value to scientific research and tourism. There is the first "golden nail" profile in China, which is known as "a living teaching material in geological history". The ecological environment in the territory is superior, with a forest coverage rate of 73.2%. Rich in land resources, the available land area is 320,000 mu. The total amount of water resources is 65.438+0.3 billion cubic meters, and the exit water quality is 654.38+0.000%. It maintains the third-class water standard and the perennial air quality is above Grade II. It is an important ecological barrier for the national ecological demonstration area and Zhejiang Province. A good ecological environment has bred many famous and excellent new agricultural products, enjoying the reputation of "Hometown of Huyou in Changshan, China", "Hometown of Edible Fungi in China" and "Hometown of Camellia oleifera in China".

Jiangshan County, located at the junction of Zhejiang, Fujian and Jiangxi provinces, is the southwest gateway of Zhejiang Province and one of the sources of Qianjiang River. In the fourth year of Tang Wude (AD 62 1), the county was established, and in 1987, the county was withdrawn to set up a city. Jiangshan is an excellent tourist city in China and a strong tourist economy city in Zhejiang Province. Jiang Lang, the only world natural heritage in Jiangsu, Zhejiang and Shanghai, has formed three core scenic spots, namely, Jianglang Mountain-Qingyang, Xianxia Ancient Road-Dai Li Secret House, Erbadu-Fugaishan, and the regional characteristic culture of "4+ 1". As a famous historical and cultural town in China and the hometown of Chinese folk art, the ancient town culture of Erbadu has a population of 1 1,000, a surname of 1.42 and a dialect of 1.3. It has preserved 2 kilometers of ancient streets and 36 ancient houses in the Ming and Qing Dynasties, and is known as "the ancient fort in the south of the Yangtze River and the dream-seeking capital". "1" is the village song culture, the representative of Jiangshan rural culture, and the inheritance and development of Jiangshan farmers' four regional characteristic cultures and excellent folk traditions. More than one third of the administrative villages in the city have their own village songs, and their works have won more than 20 national and provincial honors. They are known as "the birthplace of village songs in China", "the hometown of village songs in China" and "the creation base of village songs in China". September 20 13, the village song concert of Jiangshan Culture Auditorium was successfully staged in the Great Hall of the People in Zhejiang Province, which took the lead in launching the brand of "Good Voice in Rural China" in China.

Kecheng District, located in the west of Zhejiang Province, on the upper reaches of Qiantang River, 1985 was built with the land being withdrawn to build the city. It is the seat of Quzhou Municipal Party Committee and Municipal Government and one of the national historical and cultural cities approved by the State Council. Ke Cheng was founded in the Eastern Han Dynasty, with a history of over 1800 years, and a profound cultural heritage. Among them, the most valuable Nanzong Confucius Temple was built by the 48th generation Sun Kongduanyou of Confucius during his southern tour in 1 128. It is one of the only two Confucius temples in China. Kelan Mountain in the south of the city is called the "Eighth Cave of Taoism" with beautiful scenery. This is the reason why the legend "Wang Zhi meets an immortal" in the Book of Jin was included in the China Dictionary of Places of Interest and the Concise Encyclopedia Britannica. There are six ancient city gates in the city, which were built in the Song Dynasty, and the wall of Quzhou Prefecture is the best preserved in the south of the Yangtze River. There are also the ruins of the school pond, Jiaotang and ancient bell tower in the county town where the "three monsters in Quzhou" (white cloth monster, duck monster and one-horned monster) mentioned in Strange Tales from a Lonely Studio. There are three landforms in the whole region: mountains, hills and plains, with an average elevation of 67 meters. The climate throughout the year is mild, with abundant rainfall and sunshine, and the frost-free period is long, which belongs to the subtropical monsoon climate zone. Ke Cheng is rich in water resources. There is a first-class water source in Zhejiang province, and the urban drinking water source is first-class surface water, with a forest coverage rate of 73.7%. The annual air quality is maintained at the national first-class standard. 20 10 successfully passed the acceptance of provincial ecological zone and was named as national ecological demonstration zone. Kecheng District, with fertile soil and rich products, is the "hometown of flowers and trees", "hometown of special birds" and "hometown of citrus" in China. Citrus, in particular, was recorded as early as the Southern and Northern Dynasties and the Northern Wei Dynasty in the Notes on Water Classics. Ming dynasty was listed as a tribute, known as "the good fruit of the South". Now the planting area is more than 200,000 mu, with an annual output of 300,000 tons. It is famous for its sweet taste, rich juice, few stones and bright colors.

Qujiang District is located in the west of Zhejiang Province and the upper reaches of Qiantang River. It is a national forest city, a national sanitary city, a national ecological demonstration zone, a hometown of citrus in China, a hometown of bamboo charcoal in China, a national commodity grain base, a national lean pig production base, a high-grade specialty paper industrial base in China, a mining equipment manufacturing base in China and a calcium carbonate industrial base in China. Qujiang District is located on the edge of Zhejiang, Fujian, Jiangxi and Anhui provinces, and is known as the "Qutong Four Provinces". Rich in mineral resources, limestone reserves rank in the forefront of the province, reaching 6 billion tons, rich in water resources, with a first-class water source in Zhejiang Province, with a total reserve of 2.3 billion cubic meters, rich in forest resources and diverse species, with a forest coverage rate of 72.9%. In the third year of Chuping in the Eastern Han Dynasty (A.D. 192), the county was established, and later renamed Xin 'an and An. In the first year of the Republic of China, it was called Qu County, and it has been 1800 years since then. After liberation, it was placed under the agency of Quzhou. Qujiang district was established on 200 1 after many zoning adjustments. Qujiang district has a basin climate, with abundant sunshine and precipitation all year round, good ecology and pleasant environment. There are many national and provincial scenic spots such as Wei Zi National Forest Park, Wuxijiang National Wetland Park, Frog Longmen, Wang Yao and Jiulong Lake.

Longyou county has a long history. During the Shang and Zhou Dynasties, an ancient country, Gu Mi, was established. In the twenty-fifth year of the Qin Dynasty (222 BC), the state of Chu was destroyed by Qin, and Taimu County was established in the land, and it was transferred to Huiji County, which was the Longyou County. In the eighth year of Zhenguan in Tang Dynasty (634), it was renamed Longqiu County. In the Five Dynasties and the Six Years of Wu (93 1), Wang Qian Liu took "mound" and "tomb" as the close meanings, and changed Longqiu to Longyou according to the ups and downs of the county hills like Youlong. 1May, 985, Jinhua area was abolished, Jinhua and Quzhou were designated as provincial cities, and the system of city governing counties was implemented, and Longyou County was under the jurisdiction of Quzhou City. Longyou is rich in water resources, Qujiang and Lingshan pass through the city, and Qujiang Shipyard and Grottoes are located in the east and west of the county. Longyou County is located in Jinqu Basin in the west of Zhejiang Province, with mountains, hills, plains and rivers. Xianxialing remnant vein in the south, Qianligang remnant vein in the north, Jinheng Basin in the middle and Qujiang River cross the middle from west to east, with a flow of 28 kilometers. Gu Mi Culture, located in Sidiyuan Village, Longyou County, is a Neolithic site with a total area of more than 2,000 square meters. In this archaeological excavation, * * * excavated more than 40 perforated stone tools, spinning wheels, stone knives, pottery pieces with carbon black, etc. One of the stone tools with the image of "pig head" shows that the ancestors in western Zhejiang have been raising pigs for more than 4000 years. Its main features are the profound connotation of regional culture and the typical imprint of Liangzhu culture, which occupies a very important position in the study of Gu Mi culture in Longyou. In addition to exquisite jade articles, there are thousands of pottery fragments, and these "wordless gobbledygook" have yet to be interpreted by archaeologists. The territory of Gu Mi is in the west of Yue (now ancient Quzhou). There is a saying in "National Danger" that "Goujian's land is empty in the south, there is danger in the north, there is yin in the east and there is danger in the west", which shows that Gu Mi is a place in the west of Yue State, and its geographical location is around Longyou County, Zhejiang Province. Longyou is located in Jinqu Basin in the west of Zhejiang Province, which is located in Qin, and now belongs to Quzhou City, Zhejiang Province. The Xia and Shang Dynasties were Yue State, the Spring and Autumn Period was Gu Mi, and then Yue State. Chu destroyed Yue and returned to Chu. In about twenty-five years of the King of Qin (222 BC), Taimo (also known as Desert) County was established and placed under Huiji County. The culture here should belong to Yue culture.

Wucheng District is located in the middle and west of Zhejiang Province, in the abdomen of Jinqu Basin, adjacent to Jindong District in the east, Wuyi County in the south, Longyou County and Suichang City in the west and southwest respectively, and Lanxi City in the north. It is the core area of China excellent tourist city, national historical and cultural city, China top ten tourist city and national garden city Jinhua. 1985 When Jinhua demolished the city, Wucheng District was established. 200 1 The administrative division of Jinhua City was adjusted, and a new Wucheng District was established, in which the She nationality is an indigenous minority. Wucheng, with a long history, is an ancient city of wuyue with profound cultural heritage. Wucheng calendar is the seat of Jinhua county, prefecture, road, government and agency. Changshan County was established in the third year of Chuping in the Eastern Han Dynasty (192), followed by Dongyang County. In the third year of Chen Tianjia (565), Dongyang County was changed to Jinhua County, which was the name of Jinhua. In the thirteenth year of Emperor Wendi (593), the county was abolished and the state was established. Its land was divided into astronomy, so it was named Wuzhou. Wucheng is known as the "Little Zou Lu in the South of the Yangtze River", with the remains of Zicheng in the Tang and Song Dynasties, one of the earliest city walls in China, the Bayong Building where Li Qingzhao chanted eternal songs, the largest Taiping Heavenly Kingdom complex in China, the Jinhua School in the heyday of Neo-Confucianism in the Southern Song Dynasty, and the exquisite picture scrolls left by famous artists such as Wuzhou Kiln and Huang in the Wu, Tang and Song Dynasties. There are national 4A-level tourist attractions in the north of Wucheng, Shuanglong national scenic spots, and suburban Yuan Xian Lake provincial tourist resort in the south of Wucheng. There are many characteristic rural tourist attractions, such as Fan Shen Township with beautiful environment and Shi Gaoshan Terrace, the top ten terraces in China. Wucheng is a famous hometown of Camellia in China, Osmanthus fragrans in China and seedlings (bonsai) in China.

Lanxi City is located in the west of Jinhua City, the middle reaches of Qiantang River and the northern edge of Jinqu Basin. Guangxu's "Lanxi County Records" begins with a clear meaning, "Although the city is small, it is actually four rushes. It is located in the upper reaches of Hangyan River, which is a pass, surrounded by Ou in the south and defended by emblem in the north. It is true that those who are ordered are called important places in eastern Zhejiang. " Wu and Qu rivers join the Lanjiang River at the foot of Lanyin Mountain, go north to Meichenghui Xin 'anjiang River, which is called Fuchun River, and continue north to Fuyang, which is called Qiantang River. Lanxi has been known as "the confluence of three rivers", "the waist of six waters" and "the thoroughfare of seven provinces" since ancient times. Lanxi is an ancient land port. Analysis on the garrison of Xihe River in Jinhua County in the fifth year of Xianheng in Tang Dynasty (674): Jianzhou was a county, followed by a county, belonging to Wuzhou. Because there is a stream under Xiyin Mountain in the county, there are many orchids on the cliff, and the water is named Lanxi. The county is named after water. 1985 May 15 the State Council approved the revocation of Lanxi County's establishment of Lanxi City (county level) and held the inaugural meeting of Lanxi City on July 6. Since ancient times, it has been called "six mountains, one water and three fields". Neijiang belongs to Qiantang River system. Qujiang flows from west to east, and Jinhua River flows into Lanxi City from east to west, forming Lanjiang. Meicheng Town, Meicheng Town, jiande city, 35 kilometers away from Jiande Baisha Town. In the fourth year of Wu of the Three Kingdoms (225), Jiande County was established and the county was ruled here. In 697, in the second year of Tian Tong in the Tang Dynasty, Zhou's rule moved from Luoshan to Jiande, and was later ruled by Zhou Mu and Yanzhou. 1960 used to be the seat of Jiande Institution and Jiande County People's Government. Today is the seat of the people's government of Meicheng Town, Meicheng District, Jiande County. It is named after the shape of the ancient city wall is like half a plum blossom. Meicheng Town is backed by Wulong Mountain Scenic Resort, surrounded by arched peaks on three sides and Xin 'anjiang River on one side, with clear water winding around it. The southeast of the city is the confluence of Xin 'anjiang, Lanjiang and Fuchun rivers. Carefully check the poem "Yanzhou": "It's more urgent to cross the city beach, so divert directly. The tree color contains two towers, and the mountain shape is a state. " Qing Xu Zhengshou's poem Nanguan says, "Wei Yanzhou's twin towers embrace the Yangtze River's T-shaped creek. Bullets in the city walls are dangerous, and the picturesque scenery in Yunshan is autumn. " There are many historical sites in Meicheng, and there are still Nanfeng Tower and Beifeng Tower on the top of Xin 'anjiang Mountain, standing face to face, guarding Meicheng like a drawn sword. * * * Jiande Group was born in Meicheng. Cultural relics with a long history but now forgotten include Qianfeng Pavilion, Unique Building, Spring Pavilion, Huancui Pavilion, Yuquan Pavilion, Bijian Villa and Longmen Tower.