In the shang and zhou, in the spring and autumn and the warring states period, more than one thousand years, the song has been active in hebei, henan and shandong and other northern regions.Han northern and southern dynasties, the song has been disseminated in shanxi, shaanxi, gansu, hubei, anhui, jiangxi, zhejiang and other places.In the tang and song dynasties, the song has expanded to sichuan, guangxi, hunan, guangdong, fujian and other places, especially in shengxing in Shanxi Province.Qing dynasty into Taiwan.Song dynasty (960-1279 AD), song about 880000 people, about 1.1 of the population, in 16th place.For song first big province of shaanxi, accounting for the national song of the total population of 19.4, 4 of population in shaanxi province.In the national distribution mainly concentrates in shaanxi, henan, hebei, sichuan, this song song four province about 67;Secondly distributed in shanxi, zhejiang, shandong, three provinces in the song and concentrated in 16.The country formed the qinchuan, song ji yu two center population, song live mainly in the north.

During the Ming dynasty (1368-1644 AD), song about 540000 people, about 0.57 of the population, to the Ming dynasty 37 a surname.Song, yuan, Ming 600 national pure population growth rate is 20, the song is negative population growth, net song's population fell by 330000, 600 years, is to reduce the most populous surname common surnames in China.In the face of war and slaughter, vulnerable groups in the first place should be the main force in the north, in northern song is surname, nature is the most losses.Shandong for song first big province, accounting for the total song 17.1 of the population.In the national distribution mainly concentrates in shandong, jiangxi (15.3) and (13.5), zhejiang province, the three provinces of song song about about 46;Secondly distributed in shanxi, jiangsu, hebei, song of the three provinces and concentration of 25.Song, yuan, Ming is more than 600 years, song great changing pattern of the distribution of the total.The population is mainly from the north to east, southeast, south migration.The southern song had great development in these 600 years.Across the country to form the LuJi, jiangxi, zhejiang north jiangsu south two large pieces of song populated areas.

Contemporary song of the population has reached 9.72 million, 22 is the country most popular, the total population of about 0.81.Population of nearly 600 years since the Ming dynasty song surged to nearly 9.72 million by 540000, nearly 18 times as much.An average of nearly 93 million people of the Ming dynasty and the contemporary population by 1.2 billion, the population increased by 13 times.Song of the population increases faster than the population increase speed, nearly 1000 song population increase rate is in "V" shape trend.In the national distribution mainly concentrates in four provinces of shandong, sichuan, henan, hebei, roughly song 44 of the population;Secondly distributed in heilongjiang, anhui, jiangsu, hubei, these four provinces and 24.Shandong for song of the total population of 15, for the first big province, song of the province's population of 1.6.The country formed a LuJi henan, sichuan, heilongjiang three pieces of high ratio of area of song.In the nearly 600 years, song degree and direction of migration and during the period of song, yuan, Ming had the very big difference, especially from the eastern to the central China, north China of a property is greater than from north to south and east of migration, at the same time, to the southwest, northeast of immigration has become the important direction of flow.

The distribution frequency of contemporary song

Song of the highest population density per unit area in the eastern shandong, jiangsu, heilongjiang, liaoning dalian, chengdu, sichuan province in northern area, the song of the population reached 3.3 or more people per square kilometer, in some areas is as high as 7 or more people.Song distribution density diagram (see image 5.2.4 A) showed that the highest density of (more than 3.3 people per square km) area occupies A land area of 4.9, song population about 2.14 million;2.2-3.3 / occupies a land area of 9.8 square kilometers of area, song population about 2.49 million;1.1-2.2 / occupies a land area of 24.3 square kilometers of area, song population about 3.56 million;0.1 a 1.1 people per square kilometer area occupies a land area of 40, song population about 1.46 million;Less than 0.1 people per square km area 21 of the total land area, song a population of about 70000.Song distribution is very wide, but unevenly.Song in the crowd distribution frequency diagram (see image 5.2.4 B) show that song in north China, northeast sichuan and is one of the more common surname.Song in the eastern shandong, heilongjiang, jilin northeast generally reach the highest, accounted for the proportion of the population in 1.4 above, some 2.5 above, the covering area of about 5.6 of the total area of the country;In western shandong, JinJiYu, several most, Su Wan western hubei most of sichuan, liaoning, jilin, Inner Mongolia and the east, song frequency in the 0.7 1.4, the covering area of about 28 of the total area of the country;Northern yunnan, guizhou, south north eastern sichuan, hunan, hubei, jiangxi, fujian, zhejiang most, northwest southeast of Taiwan, eastern qinghai, song frequency in the 0.35 0.7, the covering area of about 19.4 of the total area of the country;Song in other parts of the frequency is less than 0.35, the covering area of about 47 of the total area of the country, including the frequency region accounted for 28 less than 0.1.

Blood type distribution characteristics

Song people's blood type distribution of the total is: O 3.05 million, accounts for 31.3;A type 2.76 million, accounts for 28.4;B 2.97 million, accounts for 30.6;AB 940000, accounting for 9.7.Song total population of 9.72 million.

Southeast of north of north shandong, jiangsu, anhui, hebei, heilongjiang, liaoning, sichuan chengdu area is large, jilin song common areas, occupies a land area of about 14.7, 4.63 million, song about the song 47.6 of the population.O type 1.42 million, type 1.3 million, type 1.44 million B, type AB 470000.

Most of north China, other parts of sichuan, southern, northern zhejiang, jiangsu, south anhui, to several area, occupies a land area of about 24.3, song 3.56 million, 36.6 of the total population of song.O type 1.12 million, type 1.02 million, type 1.09 million B, type AB 330000.Other areas for song less area, occupies a land area of about 61, 1.53 million, song song of the total population of about 15.8.O type 510000, type 440000, type 440000 B, type AB 140000.