The emergence of rice agriculture in Korea: archaeobotanical perspectives

This paper reviews archaeobotanical records on the beginning and spread of rice agriculture in the Korean peninsula. Argument for the earliest evidence of domesticated rice at the Sorori site, 15,000 years ago, is invalid. The evidence for rice cultivation in the Neolithic (Chulmun) is still insufficient although rice remains have been reported from a few late Neolithic sites in central-western Korea which dated to about 3000 BC. The existence of rice agriculture in the Bronze Age (Early and Middle Mumun: c.1300 ∼ 300 BC), on the other hand, is demonstrated by the high percentage and/or frequency of rice remains among crops recovered from various sites, as well as through the numerous findings of paddy fields. Rice appears to have been introduced from the Liaodong region, China, while so called 'southern diffusion route' that the beginning of rice cultivation was first stimulated by influences from Southeast Asia or South China is no more valid. Charred rice remains recovered from the Bronze Age dwellings consist of dehusked clean grains and weedy seeds are very rare among samples containing rice grains, which could be related with the harvesting and processing methods of rice. Measurements of charred rice grains also will be reported in this paper. Agricultural villages disappear from the archaeological records from the third century BC, which corresponds to the beginning of the Early Iron Age (Late Mumun), and reappear from the late first century with the emergence of urban societies.     

关于中国稻作起源证据的讨论与商榷

本文是对傅稻镰等人最近的文章批评中国栽培水稻起源研究缺乏证据、提出长江下游水稻栽培开始于公元前4000年这一观点一文的回应。我们首先考察中国从野生稻采集到水稻栽培过程研究的相关文献．进而从水稻形态学和考古学的角度对早期水稻遗存加以研究。讨论集中在以下三个方面：长江流域最早水稻栽培的时间：长江下游和淮河流域初期栽培水稻的遗存;考古遗存所见水稻粒形态大小变化的意义。我们也考察了傅文用来区分野生水稻和栽培水稻的几个标准：考古纪录中所见的未成熟稻遗存、水稻粒的增大和水稻粒的形态。根据已经发表的资料和我们对水稻的研究,我们认为到全新世早期（距今9000年前后）,南北中国的新石器时代居民就可能已经收获野生稻并开始水稻栽培了。     

New data and new issues for the study of origin of rice agriculture in China

China was one of the major centers for the origin of agriculture in the world. The origins of agriculture in China, especially the origin of rice agriculture, made a significant contribution not only to the occurrence of Chinese civilization but also to the development of world history. Recently, the study on the origin of rice agriculture has attracted the attention of the academic community due to the dramatic development of archaeobotanical research in China. In recent years, the flotation technique has widely implemented in archaeological excavations in China. As the result, a tremendous amount of plant remains have been recovered from archaeological sites, including those much related to the study of early rice agriculture. The new data provide direct archaeological evidence for, and raise some new issues about, the origin of rice agriculture in China. For example, the rice remains from the Shangshan site, dated to ca. 10,000 cal. B.P., suggest the beginning of rice cultivation regardless of whether that rice was domesticated or not. The quantitative analysis of plant remains recovered by floatation from the Jiahu site, dated to ca. 8,000 cal. B.P., revealed that the subsistence of the Jiahu people mainly relied on fishing/hunting/gathering, while the products of rice cultivation and animal husbandry were only a supplement to their diet. The ongoing excavation, with floatation and water-sieving, at the Tianluoshan site, dated to 6,000 to 7,000 cal. B.P., suggests that rice farming, though important, was only part of a broader subsistence pattern of the Hemudu Culture, and rice domestication culminated after 6,500 B.P and the beginning of rice domestication remain unclear.     

First Approach to Study the Presence of Domesticated Camelids (Lama glama) in the Chaco‐Santiago Region,a Marginal Zone of the South Central Andes

We analysed bone remains of camelids from the Maquijata site, assigned to the late pottery‐making and farming stage (ca. 800–400 BP), in order to differentiate between domestic and wild species in the Chaco‐Santiago archaeological region. This region is considered marginal to the Argentine Northwest regarding its cultural development and has received less attention than other regions. South American camelids have been one of the major resources in this continent, with domestication recorded in the South Central Andes at around 4400–3000 BP. We applied osteometric techniques and multivariate statistical analyses to proximal phalanges; the results showed interspecific differentiation of archaeological specimens, though with some methodological application issues. These results are the first contribution regarding the presence of domesticated animals in the study area. Copyright © 2012 John Wiley & Sons, Ltd.     

Prehistory of Native Americans on the Central American Land Bridge: Colonization,Dispersal, and Divergence

The Central American land bridge has served as a passageway for animals and humans moving between North and South America. Nevertheless, after the first waves of human immigration at the end of the Pleistocene, contact between the native peoples who remained on this isthmus and other peoples living in continental areas where civilization ultimately developed, is characterized, according to the field record, by the transfer of crops, technologies, and goods, until ca.1400 BP when speakers of Mesoamerican languages occupied the northwestern edge (Gran Nicoya). The ancestors of modern-day speakers of Chibchan and Chocoan languages underwent social and cultural diversification mostly within the confines of the land bridge. Some Precolumbian residents altered vegetation immediately after first arrival at least 11,000 years ago, and began to add domesticated crops to their subsistence inventory between 9000 and 7000 BP. Maize and manioc (or cassava), domesticated outside the land bridge, were introduced in Preceramic times, early in the period between 7000 and 4500 BP, and gradually dominated regional agriculture as they became more productive, and as human populations increased and spread into virgin areas. Diversity in material culture is visible ca. 6000 BP, and becomes more apparent after the introduction of pottery ca. 4500 BP. By 2000 BP culture areas with distinctive artifact inventories are discernible. Between 2500 and 1300 BP hierarchies among regions, sites, social groups, and individuals point to the establishment of chiefdoms whose elite members came to demand large numbers of costume and sumptuary goods. A few special centers with stone sculptures and low-scale architecture served a social universe larger than the chiefdom, such as clusters of recently fissioned social groups with memories of a common heritage. Social interactions on the land bridge, endowed with productive bottomlands, highland valleys, and coastal habitats, appear always to have been strongest among neighboring groups.     

The cultivation of perennial rice,an early phase in Southeast Asian agriculture?

Domesticated rice, Oryza sativa L., though a perennial, is nowadays usually cultivated as an annual. This has led a number of commentators to misinterpret the historical record. The older view that rice was domesticated around the Bay of Bengal and in parts of mainland Southeast Asia has been replaced by competing views of earliest domestication in that region and in the Yangzi valley. Botanical considerations point clearly to the retention of perennial characteristics while archaeological and historical evidences point to cultivation with more than a single harvest from an initial planting – the practice of ratooning. Evidence is reviewed briefly for China and more extensively for Southeast Asia. Modern field evidence is used to support the notion that ratooning was probably more widespread in the past and that this practice may represent an early phase in the history of rice agriculture in Southeast Asia as it does in China.     

山东沭河上游出土人骨的食性分析研究

本研究通过对山东沭河上游大汶口文化晚期及春秋战国时期 2块人骨的碳、氮同位素分析和无机成分的锶、钡、钙等微量元素分析 ,恢复了当时人的食物结构。结论有以下两点 :1 由同位素分析可知 ,本地区贫民老百姓的食物在大汶口晚期时以C4植物为主 ,大约占 6 5 1 %的比例。此时期的食物结构存在贫富差异 ,富有者的食谱主要以C3植物为主 ,大约占 6 6 4 %的比例。 2 通过对小朱家村遗址出土的 1块人骨样品的微量元素分析 ,反映出同位素分析所表明的C3植物 ,除了少量种植的稻米外 ,可能还包括胡桃属、榛属、栗属、豆科等采集植物。     

The last glaciation in the Western Mourne Mountains,Northern Ireland

During the late‐Midlandian (25–13 ¹⁴C ka BP), the last Irish Ice Sheet was thicker in the Western Mourne Mountains than previously argued. Geomorphological and sedimento‐logical analysis shows that regional ice from the Irish Ice Sheet spilled over the mountains, reaching a major limit 5 km along Pigeon Rock Valley. These findings differ from the previous view that a local valley glacier occupied the valley during this period. The pattern of deglaciation was reconstructed using glacial and periglacial evidence. A complex topographic environment in the upper reaches of the valley suggests that regional ice stagnated as it wasted away. During the Nahanagan Stadial (Younger Dryas, ca. 11–10 ka ¹⁴C BP) an arcuate ridge was formed on the western flank of the valley. Calculations suggest that the Equilibrium Line Altitude, influenced by topographic conditions favourable for snow accumulation, was approximately between 1736 m and 1386 m lower during the Nahanagan Stadial than at present.     

Raising Practices of Neolithic Livestock Evidenced by Stable Isotope Analysis in the Wei River Valley,North China

Although a patchwork of projects shows a process of agriculture intensification in North China during the Neolithic, the impact of cereal farming on animal husbandry and their mutual interaction remain cloudy. This study reports bone collagen δ¹³C and δ¹⁵N of humans and animals from Wayaogou (ca 6.5–6.0 kyrs bp ) and Dongying (ca 5.9–5.6 kyrs bp , 4.6–4.0 kyrs bp ) to explore temporal trend of livestock raising and particularly the importance of millet fodder to stock raising practices in the Wei River valley, North China. The isotopic evidence overall shows that millet products increased in human and domestic animal diets during the mentioned chronological span. δ¹³C values of pigs and dogs at Dongying are higher than those at Wayaogou, implying that the importance of millet nutrients increased to animal husbandry diachronically. Interestingly, δ¹³C results of domestic cattle of Dongying late phase (−14.1 ± 1.1‰, N = 5) are more enriched than Wayaogou wild Bos (−17.8 ± 0.3‰, N = 3), indicating that millet fodder had taken a significant place in early cattle husbandry. Besides, differences between Bos species of the two periods also imply that δ¹³C values of bone collagen constitute a potential indicator for tracing the origin of cattle husbandry in North China. In addition, domestic sheep at Dongying produced similar isotope data to wild ovicaprid at Wayaogou, suggesting that they possibly had grazed for the most in grassland and therefore experienced a different lifestyle from cattle. Copyright © 2014 John Wiley & Sons, Ltd.     

Plant exploitation of the last foragers at Shizitan in the Middle Yellow River Valley China: evidence from grinding stones

China is one of the few centers in the world where plant domestication evolved independently, but its developmental trajectory is poorly understood. This is because there is considerably less data from the terminal Pleistocene and early Holocene documented in China than in other regions, such as the Near East and Mesoamerica, and previous studies on Paleolithic subsistence in China have largely focused on animal hunting rather than plant gathering. To resolve these problems the current research investigated the range of plants used by late Paleolithic hunter–gatherers in the middle Yellow River region where some of the earliest farmers emerged. We employed usewear and starch analyses on grinding stones to recover evidence for plant use in a hunting–gathering population at a late Paleolithic site, Shizitan Locality 9 in Jixian, Shanxi (ca. 13,800–8500 cal. BP). The usewear analysis shows that all artifacts preserved a range of usewear patterns best matching multiple tasks and indicating multi-functional use. Starch remains recovered from these tools indicate that the Shizitan people collected and processed many types of grass seeds (Panicoideae and Pooideae subfamilies), acorns (Quercus sp.), beans (Phaseoleae tribe) and yams (Dioscorea sp.). The Shizitan people represented some of the last hunter–gatherers in the middle Yellow River region. Their broad spectrum subsistence strategy was apparently carried on by the first Neolithic farmers in the same region, who collected similar wild plants and eventually domesticated millets. The trajectory from intensified collection of a wide range of wild plants to domestication of a small number of species was a very long process in north China. This parallels the transition from the “broad spectrum revolution” to agriculture in the Near East.     

Land-use change for rice and foxtail millet cultivation in the Chengtoushan site,central China,reconstructed from weed seed assemblages

Archaeobotanical analysis of moat sediments from the Neolithic site of Chengtoushan, Hunan, China, provides evidence of the land-use change for rice and foxtail millet cultivation around the site. Rice constantly appeared through the three phases of Daxi culture with high percentages, while accompanying wetland species of paddy field weeds gradually decreased. In contrast, foxtail millet increased together with upland field and ruderal weeds through the time. These changes suggest that foxtail millet cultivation was established with the expansion of dry farming in region of the site, while rice cultivation was continuously practiced on the alluvial plain surrounding the site. This diversification of land-use through the addition of foxtail millet cultivation may be attributed to population increase or as a buffer to natural disasters such as flooding. In addition, gathering of wild nuts and fruits continued alongside cultivation. These multiple strategies for food procurement provided sustainable food supply for the population of Chengtoushan for 1,800 years.     

Wild or domesticated: DNA analysis of ancient water buffalo remains from north China

Recent zooarchaeological studies on water buffalo (Bubalus sp.) remains from China and south Asia question the traditional view that water buffalo were first domesticated in Neolithic China over 7000 years ago. The results from several recent population genetic studies of modern domesticated buffalo (Bubalus bubalis) are not consistent with each other, placing the original center of buffalo's domestication in south Asia, southeast Asia, or China. This paper reports a study using an ancient DNA approach to analyze water buffalo remains from Neolithic sites in north China to investigate their affinities with modern domesticated water buffalo, and to shed light on the origin of modern domesticated water buffalo in China.A 169 bp fragment of D-loop mitochondrial DNA was successfully amplified and verified for 13 of 24 bone samples obtained from seven archaeological sites along the Wei River valley in Shaanxi Province, China. The bone samples which yielded positive DNA can be dated to 8000–3600 cal. BP. The phylogenetic analysis of the obtained DNA sequences along with modern water buffalo sequences indicated that the ancient water buffalos were not the direct ancestor of modern domesticated water buffalo. However, the phylogenetic analysis, along with BLAST searches of these ancient DNA sequences, did demonstrate their relatedness to water buffalo more so than to any other bovid species, confirming the existence of indigenous wild (but now extinct) water buffalo species (B. mephistopheles) in ancient China.The DNA analysis of these ancient remains failed to establish direct links between modern domesticated water buffalo (B. bubalis) and indigenous water buffalo (B. mephistopheles) from ancient China. If further DNA studies of more ancient remains from other regions of China confirm the observation of solely indigenous water buffalo species in ancient China, it would suggest modern water buffalo might not have been first domesticated in China.     

Consilience of genetics and archaeobotany in the entangled history of rice

Major leaps forward in understanding rice both in genetics and archaeology have taken place in the past decade or so—with the publication of full draft genomes for indica and japonica rice, on the one hand, and with the spread of systematic flotation and increased recovery of archaeological spikelet bases and other rice remains on early sites in China, India and Southeast Asia. This paper will sketch a framework that coherently integrates the evidence from these burgeoning fields. This framework implies a reticulate framework in the phylogeny of early cultivated rice, with multiple starts of cultivation (two is perhaps not enough) but with the key consolidations of adaptations that must have been spread through hybridisation and therefore long-distance cultural contacts. Archaeobotanical evidence allows us to document the gradual evolutionary process of domestication through rice spikelet bases and grain size change. Separate trends in grain size change can be identified in India and China. The earliest centre of rice domestication was in the Yangtze basin of China, but a largely separate trajectory into rice cultivation can be traced in the Ganges plains of India. Intriguingly, contact-induced hybridisation is indicated for the early development of indica in northern India, ca. 2000 BC. An updated synthesis of the interwoven patterns of the spread of various rice varieties throughout Asia and to Madagascar can be suggested in which rice reached most of its historical range of important cultivation by the Iron Age.     

中国新石器时代早期文化遗存的新发现和新思考

本文依据中国新石器时代早期文化遗存的新发现,提出稻作农业的起源和早期发展形式是中心起源、边缘发展的看法,即稻作农业大约在公元前１００００年起源于自然食物来源充足的中国南方腹心地带,于公元前７０００年后发展于“富裕的食物采集文化”区边缘的两湖平原西部地区和钱塘江流域,并逐步向淮河流域推进。     

Dental evolution in prehistoric Native Americans of the Ohio valley area. I. Wear and pathology

Temporal patterns of tooth wear rates (loss of crown height) and dental pathologies (caries, abscess, and tooth loss) are estimated for 40 Native American populations of the upper Ohio River valley area ranging in time from the Late Archaic (ca. 3500 years BP ) to Protohistoric times (ca. 350 years BP ). Within this time span three ‘dental cultural ecological environments’ are recognized: high rates of wear, low frequencies of pathology (Late Archaic), low rates of wear, low frequencies of pathologies (Woodland, ca. 2500–1000 years BP ), and low rates of wear and high frequencies of pathologies (Late Prehistoric, ca. post-1000 years BP ). Phenotypic selection acting to maintain tooth size is associated with pre-ceramic, hunter–fisher–gatherers in the first dental environment. The introduction and development of ceramics at the end of the Late Archaic is associated with significant reduction in tooth wear rates and reduction in size of maxillary teeth, most likely due to selection. From at least the Middle Woodland period (ca. 2000 years BP ) to the end of the time sequence considered, tooth size in Ohio Valley Native Americans was stable, with minor fluctuations due to genetic drift. At present there is no evidence that major changes in diet at the beginning of the Late Prehistoric period affected tooth size, even though the frequencies of dental pathologies increased dramatically. © 1997 John Wiley & Sons, Ltd.     

The origin of rice cultivation in the Lower Yangtze Region,China

About the former half of the sixth millennium bc (Kuahuqiao culture) settlement area expanded to alluvial lowlands in the lower Yangtze region, and during the fifth millennium bc (Hemudu culture), adaptation to the wetland settings established. Although older rice remains have been found in this area, it is safe to say that rice cultivation began during Kuahuqiao and Hemudu cultures. At the beginning, it was only a part of broad-spectrum production highly dependent on lacustrine resources, and it took another millennium to establish the ancient civilization (Liangzhu culture) based on rice cultivation.     

Evidence for a Neolithic Age fire-irrigation paddy cultivation system in the lower Yangtze River Delta,China

Establishing stable cropping systems was vital in antiquity, assuring certain yields and enabling ancient people to settle, thus possibly causing various modern food habits and culture to form around the world, especially in cereal-cultivation-dominated countries. China, one of the most famous ancient agricultural countries, has a long history of rice planting, and the fire-irrigation paddy cultivation system is prevalent in the lower Yangtze region, which is considered a rice domestication center. However, its origin and cultivation pattern remain unclear. We studied a famous agricultural vestige, the Chuodun site, involved in rice planting in the lower Yangtze River Delta in eastern China, during the Neolithic Age. Clear evidence from archaeology, paleobiology, pedology and biogeochemistry suggest both that the rice fire-irrigation cultivation system formed during the Neolithic Age and that ancient peoples lived there steadily. Under this extensive cultivation system, soil structures and properties changed significantly; in particular, it left more black carbon in the soil and increased the organic carbon soil stability, which can be used to reconstruct prehistoric environments. Meanwhile, the prevalent fire-irrigation paddy cultivation system used by farmers in this area, though for a different purpose than ancient people, may be inherited from the Neolithic Age.     

Early Neolithic diets at Baijia,Wei River valley,China: stable carbon and nitrogen isotope analysis of human and faunal remains

Stable carbon and nitrogen isotope values are presented for faunal and human bone collagen from Baijia, in the Wei River valley region of Shaanxi Province, China. The remains have a calibrated age range of ca. 5709–5389 BC, and correspond with the early Neolithic Laoguantai Period. Stable isotopic results indicate that human diets included millet and probably aquatic foods such as fish and shellfish. Bovid samples are tentatively identified as water buffalo, and have a mean δ¹³C value of −14.6‰, which reflects some millet consumption. Whether bovids were grazing on wild millet, or had diets directly influenced by humans, is not known. The single Sus sample from Baijia had a diet dominated by C3 plants and is thus unlikely to have been a domesticated animal. Overall, the stable isotope results presented here conform to the current concept that the people of the Laoguantai culture were millet farmers, who had subsistence strategies that included hunted wild foods.     

Ancient olive DNA in pits: preservation,amplification and sequence analysis

The olive tree (Olea europaea) was domesticated by vegetative propagation of selected wild individuals with superior fruit. Later, new cultivars were established repeatedly from feral trees or from crosses between wild, feral, and domesticated trees. Thus the genetic background of many contemporary domesticated lines is a mixture of ancient cultivars and local wild trees. Ancient DNA may illuminate the complicated process of olive domestication because such DNA sequences provide data about ancient genomes that existed closer to the domestication events. Well preserved DNA must be available for such studies, even though in the Mediterranean region, where olive cultivation took place, the climatic conditions are not favorable for DNA preservation. To select for well preserved pits we measured their proportions of lignin by IR spectroscopy, and correlated this with parameters of DNA quality such as template length in an olive-specific repeat array, and template quantity as determined by real-time PCR amplification. Archaeological pits that passed these tests did contain high quality ancient DNA. We present the first ancient olive DNA sequences and compare them to modern wild, feral and domesticated lines.     

中国最早的稻作与稻作农业起源中心

产生最早稻作的地方未必一定能成为稻作起源的中心,中国最早的稻作可能在华南北部诞生,中国稻作农业起源的中心首先是在长江中游,长江下游和淮河上游也可能是另外的两个中心。