Guangdong Road(guang dong tong lu )

Nanling

Nanling is the general name of the mountains in the south of Chu state (similar to Qinling) in the period of Emperor Qinshihuang's southern expedition to Guangdong and Guangxi. It is the watershed between the Yangtze River System (Dongting Lake system Poyang Lake system) and the Pearl River system and the surrounding mountains. Scope: it starts from Guilin City in Guangxi in the West and ends at Dayu County in Ganzhou City in Jiangxi Province in the East. The north line is from the south of Shaoyang City in Hunan Province to the south of Yongzhou City to the south of Chenzhou City. The south line is from the north of Hezhou City in Guangxi Province to the north of Qingyuan City in Guangdong Province to the north of Shaoguan City.

Nanling is much larger than Wuling: Nanling and Lingnan to its south are both regional areas. Wuling is only a famous place in Nanling. Five strategic sites related to the important southward march in the early Qin and Han Dynasties are prominently known as Wuling, namely Yuechengling, Dupangling (jieyangling), mengzhuling, Qitianling and Dayuling, which are later called Dashan and even mountain range .

Other mountains or mountains in Nanling: Guilin Haiyang mountain, Yongzhou Jiuyi mountain, Chenzhou Xianghualing mountain, Qiwei mountain and Dadong mountain in the north of Qingyuan City, Dayao Mountain and Weiling mountain in the north of Shaoguan, Qingyun Mountain (the main peak is on the boundary of two provinces) and Jiulian Mountain (the main peak is close to the boundary of two provinces) in the northeast of Shaoguan, and Sanbai mountain (the intersection of three provinces) in the southeast of Ganzhou.

brief introduction

Range

Nanmountains, also known as Nanling, is the general name of the mountainous area (the area connecting Hunan, Guangxi, Jiangxi and Guangdong) in the south of Chu state during the first Emperor Qin's southern expedition to Guangdong and Guangxi (the important project is the construction of Lingqu), which was inherited by later generations. Therefore, Nanling refers to the mountainous area connecting Jiangxi Province in Hunan Province with Guangdong and Guangxi in the south, that is, the watershed between the Yangtze River System (Dongting Lake system Poyang Lake system) and the Pearl River system and the surrounding mountains.

Specific scope: it starts from the northeast and east of Guilin City in Guangxi (involving Yuechengling and Dupangling) in the west, and reaches Dayu County in Ganzhou City in Jiangxi Province (Dayuling) in the East. The north line is from the south of Shaoyang City in Hunan Province (involving Yuechengling) - the majority of Yongzhou City (involving Yuechengling, Dupangling and mengzhuling) - the south of Chenzhou City (Qitianling). The south line is from the north of Hezhou City in Guangxi Province (involving Dupangling and mengzhuling) Mengzhuling, Lianyang mountains (Lianshan mountains and Yangshan mountains) in Lianyang area of northern Qingyuan City, Guangdong Province (outside Wuling), northern Shaoguan City (involving Dayuling) and southern Ganzhou City (three hundred mountains).

Boundary: the 80 Li da'nan mountain in the northwest is the southern remnant of the Xuefeng mountain range, and the southeast of it belongs to the Yuechengling area (nearby is Maoer Mountain, the first peak in South China). In the northeast, the Dongjiang Reservoir in Chenzhou City is the dividing line, and in the northeast is the Luoxiao mountains. In the East, the three hundred mountains in southern Jiangxi are the watershed between the Yangtze River system and the Pearl River system.

Wuling is the representative

Wuling and other mountains are marked on many kinds of maps in China. Wuling is one of the famous strategic areas in the Nanling area. The reason why Wuling is famous is that it was a military fortress in the early period. The five strategic areas related to the important southward March route in the early Qin and Han Dynasties were highlighted and called Wuling (all with military sites in the Qin and Han dynasties).

The five mountains are Yuechengling, Dupangling (jieyangling), mengzhuling, Qitianling and Dayuling (between Hunan and Guangxi).

The change of Wuling reference: from ridge to mountain. In the early Qin and Han Dynasties, there were five military strategic fortresses, which referred to mountains or tailing. Later, they were generally called Dashan and even mountain ranges (including the main mountain, the main branch and the remaining veins). For example, Yuechengling was originally a military fortress stationed in the north of Xing'an County in Guangxi during the period of Emperor Qinshihuang's founding of Lingqu (opening up the Yangtze River and Pearl River Systems). In the early days of Dayuling, it was a fortress like tailing (including Yuling and Meiling ancient roads), and later it was generally called Dashan and even Zhishan.

Other mountains

It also includes Guilin Haiyang mountain, Yongzhou Jiuyi mountain, Chenzhou Xianghualing mountain, Qiwei mountain and Dadong mountain in Lianyang area in the north of Qingyuan City, Dayao Mountain in the northwest of Shaoguan City, Weiling mountain in the North (which was called Xiaoyu mountain by some people in ancient times, therefore, weilingguan was called Xiaoyu mountain pass by some people), Qingyun Mountain (main peak) in the northeast of Shaoguan across QUANNAN County in the south of Ganzhou City These mountains are larger than Qitianling (Yangming Mountain range in Yongzhou City, Hunan Province is very large. There are different opinions on whether it belongs to Nanling in Xiangjiang River System).

From the northwest of Guangxi Zhuang Autonomous Region to the south of Hunan Province, to the south of Jiangxi Province to the north of Guangdong Province, it separates the Yangtze River Basin and the Pearl River Basin.

The height is generally about 1000 meters. A few granite peaks are 1500 meters above sea level. Such as Miaoershan (2142 meters), zhenbaoding (2138 meters), jiucailing (2009 meters), matangding (1787 meters), Qitianling (1510 meters), etc. There are valley basins between the mountains. The basins in the western part of Nanling are mostly composed of limestone, forming karst landform; the basins in the eastern part of Nanling are mostly composed of red glutenite, forming Danxia landform through weathering and erosion. "Danxia" is named after Danxia Mountain in the southwest of Dayu mountain.

The valley pass constitutes the north-south traffic channel, mainly including: one is Guiling Road, which is low between Yuechengling and Haiyangshan. From 221 BC to 206 BC, Lingqu (Xing'an canal) was dug between the upper reaches of Guijiang River and Xiangjiang River. It is the only waterway connecting the Yangtze River system and the Pearl River system, and now the Xiang GUI railway passes through it. The second is Zheling Road, which passes through Wushui Valley in the upper reaches of Beijiang River and Beijing Guangzhou railway. The third is Meiling Road, Nanxiong in Zhenshui Valley in the upper reaches of the Northwest River, xiaomeiguan in yuedayuling to the upper reaches of Ganjiang River, which is the main access road between Guangdong and Jiangxi. Although the height of Nanling is not large, it plays an important role in blocking the cold wave going south and the typhoon coming from southeast. In the south of Nanling, the climate is warm all year round, and frost and snow are rare. In the north of Nanling, the winter is cold and the flying snow is common, so it becomes an important boundary of physical geography. During the Yanshanian movement, a large number of granites intruded into the upper part of the crust in Nanling area, forming rich non-ferrous metal deposits under the action of high temperature and high pressure, among which tungsten and antimony deposits are the most abundant and the most concentrated producing areas in the world.

geographical position

It is located in the border of Hunan Province, Jiangxi Province, Guangdong Province and Guangxi Zhuang Autonomous Region.

It is about 24 ° 00 ′ - 26 ° 30 ′ N and 110 ° 116 ° E.

Watershed characteristics

It has its own characteristics

Nanling is the watershed between the Yangtze River System (Dongting Lake system Poyang Lake system) and the Pearl River system and the surrounding mountains.

Yuechengling mountains in the West: Fuyi water in the east of Zijiang River in Dongting Lake water system in the north, Xiangjiang River in Dongting Lake water system in the south, and Xing'an County and Lingchuan County in the south of southwest corner of Yuechengling mountains are the birthplaces of several branches of Xijiang River in Guilin City in Guangxi. During the first emperor of Qin Dynasty, he went south to Guilin and built a famous building here

Linqu canal

In order to connect the Yangtze River system and the Pearl River system, people and materials were transported from the Xiangjiang River system to Guilin, and later Guilin county was established.

Qitianling is the watershed between Leishui, a tributary of Xiangjiang River, and Wushui, the West source of Beijiang River in Pearl River system.

The Dayuling mountains in the East are the watershed between Ganjiang River source in Poyang Lake system and Beijiang River in Pearl River system.

It's the same watershed in several other mountains.

Not limited to water diversion

The watershed is small and the surrounding mountains are large. Nanling has the characteristics of watershed, but it is not limited to watershed. For example, the part of Yuechengling in Hunan is in Dongting Lake water system (the headwaters of Zijiang River and Xiangjiang River are deep into Guilin City, Guangxi, one is in Ziyuan County, and the other is near Lingqu of Xing'an County). Only the southwest part of Yuechengling is the watershed between Yangtze River and Pearl River, that is to say, most sections of Yuechengling have no watershed Sign.

North and South are similar

Nanling

Nanling is a dividing line, and the north and the south are clearly separated: the south of the five ridges is Guangdong and Guangxi, and the north of the five ridges is Hunan and Jiangxi; on one side, it belongs to South China, on the other side, it belongs to Jiangnan. Nanling is a link between the north and the south. Lingnan and Lingbei are inseparable from each other. This link is the similarity of Nanling.

1. The similarity lies in things

Nanling is a mountain range, but there are mountains without veins. It is divided into five groups: Dayu mountain, Qitian mountain, dupang mountain, Mengzhu mountain and Yuecheng mountain. So Nanling is also called "Wuling". After many times of orogeny, the East-West structural line of Nanling Mountain was disturbed by the Northeast structural line of Cathaysian style, so it became fragmented, forming many north-south and northeast southwest valleys, in which the river was immersed, and the valley of mountain pass became the channel of North-South communication.

Many times of orogeny also made the magmatic activity in Nanling area frequent, so the mountains in Nanling are mostly composed of granite bodies, so there are many mineral deposits in Nanling Mountains, especially the non-ferrous metals such as tungsten, tin, aluminum, zinc and so on. The valley of Nanling is also very distinctive. It is composed of weak bedrock such as red ore rock or cyan limestone. In addition, Nanling is located in the subtropical area of southern China, with high temperature and rainy weather, and obvious rain erosion. The red rocks in the valley are eroded by rain, and many tall and handsome red rocks in Chibi appear. Against the background of subtropical evergreen trees, they form very beautiful scenery, such as Danxia Mountain, Jinyan mountain and Jinjiling mountain in northern Guangdong, Feitian mountain and Bianjiang River in southern Hunan. Because Danxia Mountain is the most typical landscape, it is also called "Danxia landform" by geologists. If the valley is limestone, in the rain erosion, the development of another landform - karst landform (named after a place in former Yugoslavia). Karst landform (also known as karst landform) is more beautiful,

Chinese PinYin : Guang Dong Tong Lu