The is a partially agricultural, archeological culture of northern

Honshu , historically called , is the largest and most populous island of Japan. It is located south of Hokkaidō across the Tsugaru Strait, north of Shikoku across the Inland Sea, and northeast of Kyūshū across the Kanmon Straits. The island separ ...

and southern

Hokkaido is Japan's second largest island and comprises the largest and northernmost prefecture, making up its own region. The Tsugaru Strait separates Hokkaidō from Honshu; the two islands are connected by the undersea railway Seikan Tunnel. The la ...

(700–1200 CE) that has been identified as

Emishi The (also called Ebisu and Ezo), written with Chinese characters that literally mean "shrimp barbarians," constituted an ancient ethnic group of people who lived in parts of Honshū, especially in the Tōhoku region, referred to as in contemp ...

, as a

Japanese Japanese may refer to: * Something from or related to Japan, an island country in East Asia * Japanese language, spoken mainly in Japan * Japanese people, the ethnic group that identifies with Japan through ancestry or culture ** Japanese diaspor ...

-Emishi mixed culture, as the incipient modern Ainu, or with all three synonymously. Scholars frequently equate Satsumon people with

, a culture that emerged in northern

as early as the 5th century CE. This proposition is based on similarities between Ainu and Emishi skeletal remains as well as a number of place names across Honshu that resemble Ainu words. It is possible that the emergence of Satsumon culture in Hokkaido was triggered by immigration of Emishi people from Honshu. However, there are many differences between Emishi and Satsumon. For instance, horse riding and rice agriculture, neither of which were present in ancient Hokkaido, were both central to Emishi lifestyle. It may have arisen as a merger of the

Yayoi The started at the beginning of the Neolithic in Japan, continued through the Bronze Age, and towards its end crossed into the Iron Age. Since the 1980s, scholars have argued that a period previously classified as a transition from the Jōmon p ...

–

Kofun are megalithic tombs or tumuli in Northeast Asia. ''Kofun'' were mainly constructed in the Japanese archipelago between the middle of the 3rd century to the early 7th century CE.岡田裕之「前方後円墳」『日本古代史大辞典』� ...

and the Jōmon cultures. The Satsumon culture appears to have spread from northeastern Honshu into southern Hokkaido. The Ainu culture is now generally considered to have originated from the merging of the

Okhotsk culture The Okhotsk culture is an archaeological coastal fishing and hunter-gatherer culture that developed around the southern coastal regions of the Sea of Okhotsk, including Sakhalin, northeastern Hokkaido, and the Kuril Islands during the last half o ...

and the Satsumon culture.

Subsistence

Iron tools seem to have prevailed around the end of Epi-Jomon, so that stone tools disappeared in the Satsumon period. Among subsistence activities, hunting, gathering and fishing continued to be the most important. Locations of large settlements at estuaries indicate the importance of

salmon Salmon () is the common name for several list of commercially important fish species, commercially important species of euryhaline ray-finned fish from the family (biology), family Salmonidae, which are native to tributary, tributaries of the ...

. Although cultivation of

buckwheat Buckwheat (''Fagopyrum esculentum''), or common buckwheat, is a flowering plant in the knotweed family Polygonaceae cultivated for its grain-like seeds and as a cover crop. The name "buckwheat" is used for several other species, such as '' Fago ...

and

barley Barley (''Hordeum vulgare''), a member of the grass family, is a major cereal grain grown in temperate climates globally. It was one of the first cultivated grains, particularly in Eurasia as early as 10,000 years ago. Globally 70% of barley pr ...

is presumed for the Epi-Jomon, reliable evidence increases for the Satsumon as follows: buckwheat,

rice Rice is the seed of the grass species ''Oryza sativa'' (Asian rice) or less commonly ''Oryza glaberrima ''Oryza glaberrima'', commonly known as African rice, is one of the two domesticated rice species. It was first domesticated and grown i ...

, barley,

wheat Wheat is a grass widely cultivated for its seed, a cereal grain that is a worldwide staple food. The many species of wheat together make up the genus ''Triticum'' ; the most widely grown is common wheat (''T. aestivum''). The archaeologi ...

sorghum ''Sorghum'' () is a genus of about 25 species of flowering plants in the grass family (Poaceae). Some of these species are grown as cereals for human consumption and some in pastures for animals. One species is grown for grain, while many othe ...

foxtail millet Foxtail millet, scientific name ''Setaria italica'' (synonym ''Panicum italicum'' L.), is an annual grass grown for human food. It is the second-most widely planted species of millet, and the most grown millet species in Asia. The oldest evidenc ...

barnyard millet ''Echinochloa'' is a very widespread genus of plants in the grass family and tribe Paniceae. Some of the species are known by the common names barnyard grass or cockspur grass. Some of the species within this genus are millets that are grown ...

Chinese millet Foxtail millet, scientific name ''Setaria italica'' (synonym ''Panicum italicum'' L.), is an annual grass grown for human food. It is the second-most widely planted species of millet, and the most grown millet species in Asia. The oldest evidenc ...

green gram The mung bean (''Vigna radiata''), alternatively known as the green gram, maash ( fa, ماش٫ )٫ mūng (), monggo, or munggo (Philippines), is a plant species in the legume family.Brief Introduction of Mung Bean. Vigna Radiata Extract G ...

perilla ''Perilla'' is a genus consisting of one major Asiatic crop species ''Perilla frutescens'' and a few wild species in nature belonging to the mint family, Lamiaceae. The genus encompasses several distinct varieties of Asian herb, seed, and vegeta ...

melon A melon is any of various plants of the family Cucurbitaceae with sweet, edible, and fleshy fruit. The word "melon" can refer to either the plant or specifically to the fruit. Botanically, a melon is a kind of berry, specifically a "pepo". The ...

adzuki bean ''Vigna angularis'', also known as the adzuki bean , azuki bean, aduki bean, red bean, or red mung bean, is an Annual plant, annual vine widely cultivated throughout East Asia for its small (approximately long) bean. The cultivars most familiar ...

and

hemp Hemp, or industrial hemp, is a botanical class of ''Cannabis sativa'' cultivars grown specifically for industrial or medicinal use. It can be used to make a wide range of products. Along with bamboo, hemp is among the fastest growing plants o ...

. The rice may have been imported from the mainland or, if cultivated at all, grown in dry fields. Opinions divide among those who, taking Satsumon culture as the periphery of the Kofun culture of the mainland, argue that such crops supplied a large portion of the diet, and those who think it provided only a small part and the culture was basically a continuation of the Epi-Jomon.

Society

Even the largest Satsumon settlements show scarce evidence of social stratification. The "Hokkaido-type kofun", which have been discovered in several sites in southwestern Hokkaido, are very important in this context. They are at the end of the "Final Kofun" of northern Tōhoku, which themselves were late, extreme reductions of normal kofun of the central area which had fallen into disuse by the time of the Hokkaido type. There are various opinions about the status of those buried in Hokkaido type kofun. Some see them as immigrants from Tōhoku, others as indigenous chiefs who had a special relationship with the government of the mainland, and that such a scale of tomb could be made by normal heads of family.

References

Archaeological cultures of East Asia Archaeology of Japan Ainu history {{ainu-stub