欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
以甘肃省秦安县和礼县考古遗址中发现的粟和黍为研究对象，对其进行了碳同位素的测定，并开展了碳同位素和形态学鉴定方法的检验。结果表明，粟和黍的碳同位素值是不同的，即使是炭化的考古样品，粟和黍的碳同位素值仍然是有差别的，粟较黍的碳同位素值总体偏正。这一方法可以比较简便地检验形态学鉴定的结果是否正确。如果能够建立不同地区不同时段粟和黍的碳同位素值数据库，将会为粟和黍的鉴别提供依据。
英文摘要：
Origin of agriculture researches in the world show that Northern China is the only one where agriculture did not seem to unfold,in situ, from local hunter-gatherers in ten instances known worldwide in which agriculture evolved independently. And foxtail millet （Setaria italica）and common millet （or broomcorn millet; Panicum miliaceum） were staple foods in the semiarid regions of prehistoric China before the popularity of rice and wheat, and even today are still important foods there. However, archaeobotanical remains of foxtail millet and common millet are difficult to distinguish mainly because of their very small sizes and very similar shapes. Here we try to discriminate foxtail millet and common millet by using δ^13C values as indicator. There are three kinds of C4 plants based on photosynthesis： PEP-CK type; NADP-ME type, which includes foxtail millet; NAD-ME type, which includes common millet. Other studies show that different types of C4 plants have different δ^13C values. The charred botanical samples studied were collected from archaeological sites,Qin＇an County and Li County, Gansu Province. They were identified as foxtail millet and common millet in terms of morphology. Using a Dleta Plus produced by Finigan, δ^13C of each sample were analyzed of 12 couples of foxtail millet and common millet from Qin＇an and 14 couples from Li. For Qin＇an County＇s samples,the δ^13C values of foxtail millet are - 11.36%0 - -9.78‰, averaging - 10.39‰ and the δ^13C values of common millet are - 11.85‰ - - 10.02‰, averaging - 10. 87‰, while for Li County＇s samples,the δ^13C values of foxtail millet are -11.76%0 - -9.59%0, averaging -10.46‰ and the δ^13C values of common millet are - 11.93‰ - - 10.49‰, averaging - 11.26‰. As a whole, the δ^13C of charred foxtail millet trends more toward the positive than the δ^13C of charred common millet does. This trend may be used to test if the morphological distinguishing between foxtail millet and common millet is correct. If a database
同期刊论文项目
同项目期刊论文
Reliability of pollen concentration as the indicator of effective moisture in arid and semi-arid reg
Hemlock (Tsuga canadensis) declines at 9800 and 5300 cal. yr BP caused by Holocene climatic shifts i
Magnetostratigraphy and palaeoclimatic significance of Late Neogene aeolian sequence of Lanzhou area
Vegetation history, climate change and human activities over the last 6200 years on the Liupan Mount
Response of geochemical records in lacustrine sediments to climate change and human impact during mi
Effects of positive interactions, sizes ymmetry of competition and abiotic stress on self-thinning i
Sedimentary and Optically Stimulated Luminescence (OSL) dating for formation of the present northern
Reconstructed droughts for the southeastern Tibetan Plateau over the past 568 years and its linkages
Isotopic and geochemical evidence of recharge sources and water quality in the Quaternary aquifer be
GIS- and Machine Learning-Based Modeling of the Potential Distribution of Broadleaved Deciduous Fore
Do fine-grained components of loess indicate westerlies: Insights from observations of dust storm de
Compound-specific hydrogen isotopes of long-chain n-alknaes extracted from topsoil under a grassland
Ultrafine component in Chinese loess and variation over the past 7.6 Ma: implication for pedogenesis
Pollen distribution in large freshwater lake of arid region: a case study on the surface sediments f
The equivalent dose of different grain size quartz fractions from lakeshore sediments in the arid re
Evolution of prehistoric agriculture in central Gansu Province, China: A case study in Qin'an and Li
Moisture changes over the last millennium in arid central Asia: a review, synthesis and comparison w
Quantifying the effect of ecological restoration on soil erosion in China's Loess Plateau region: an
Sedimentation Geochemistry and Environmental Changes during the Late Pleistocene of Paleolake Qarhan
The variation of soil temperature and water content of seasonal frozen soil with different vegetatio
Asian summer monsoon precipitation recorded by stalagmite oxygen isotopic composition in the western
Chloride and the environmental isotopes as the indicators of the groundwater recharge in the Gobi De
Variability of skeletal growth and δ13C in massive corals from the South China Sea:Effects of photos
The Jilantai Salt Lake shorelines in northwestern arid China revealed by remote sensing images. Jour
Stream response to Quaternary tectonic and climatic change: Evidence from the upper Weihe River, cen
Molecular fossil and paleovegetation records of paleosol S4 and adjacent loess layers in the Luochua
Common tree growth anomalies over the northeastern Tibetan Plateau during the last six centuries: im
Spatiotemporal variations of Zr/Rb ratio in three last interglacial paleosol profiles across the Chi
Consistent grain size distribution of pedogenic maghemite of surface soils and Miocene loessic soils
A 1000-year chironomid-based salinity reconstruction from varved sediments of Sugan Lake, Qaidam Bas
Response of regional tree-line forests to climate change: evidence from the northeastern Tibetan Pla
Temporal change of radiocarbon reservoir effect in sugan lake, northwest china during the late Holoc
Drought variations in the eastern part of northwest China over the past two centuries: evidence from
An 850-year ostrcod-shell trace-element record from Sugan Lake, northern Tibetan Plateau, China: Imp
A high resolution record of vegetation and environmental variation through the last ～25,000 years in
Spatial modelling of the variability of the soil moisture regime at the landscape scale in the south
Possible orographic and solar controls of late Holocene centennial-scale moisture oscillations in th
Holocene natural rhythms of vegetation and present potential ecology in the estern Chinese Loess Pla
CPI values of terrestrial higher plant-derived long-chain n-alkanes: a potential paleoclimatic proxy
Modeling sensitivity study of the possible impact of snow and glaciers developing over the Tibetan P
Modeling sensitivity study of the possible impact of snow and glaciers developing over Tibetan Plate
Evaluating the role of climate and tectonics during non-steady incision of the Yellow River: evidenc
Process-Based Soil Erosion Simulation on a Regional Scale: The Effect of Ecological Restoration in t
Modern pollen representation of source vegetation in the Qaidam Basin and surrounding mountains, nor
May-June mean temperature reconstruction over the past 300 years based on tree rings in the Qilian M
Thermally Stable Maghemite Formed By Rapid High Temperature Oxidation of Fine-Grained Synthetic Magn
期刊信息
位置：