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  • 1
    Online Resource
    Online Resource
    Late-Holocene palaeoclimatic change at the Dongnimdong archaeological site, Gwangju, SW Korea
    SAGE Publications ; 2007
    In:  The Holocene Vol. 17, No. 5 ( 2007-07), p. 665-672
    Details
    In: The Holocene, SAGE Publications, Vol. 17, No. 5 ( 2007-07), p. 665-672
    Abstract: A late-Holocene swamp sediment record is presented from the Dongnimdong archaeological site in SW Korea. Pollen analysis, geochemical analyses and radiocarbon dating have been used to reconstruct the vegetation and climatic changes. According to the pollen records, temperate deciduous broadleaved trees combined with herbs predominated in the study area ecology. Reduction of deciduous broadleaved trees with the spread of herbaceous taxa found in the middle part ( c. 3300—2600 yr BP) indicates climatic change toward cooler and drier conditions. Significant increase in sand content and concomitant decrease in TOC content may suggest the occurrence of a period of drought. Vegetation changes recorded in the pollen sequence indicate the destruction of lowland deciduous forests and an accompanied expansion of grasses resulting from the climate changes. However, the increase of cultivation-accompanied herbs and excavated wooden tools for agriculture suggest the significant anthropogenic influence on the vegetation changes.
    Type of Medium: Online Resource
    ISSN: 0959-6836 , 1477-0911
    URL: Article
    DOI: 10.1177/0959683607078997
    RVK:
    RA 1000
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2007
    detail.hit.zdb_id: 2027956-5
    SSG: 14
    SSG: 3,4
    Location Call Number Limitation Availability
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    Online Resource
  • 2
    Online Resource
    Online Resource
    Vertebrate burrows in late pleistocene paleosols at Korean Palaeolithic sites and their significance as a stratigraphic marker
    Cambridge University Press (CUP) ; 2007
    In:  Quaternary Research Vol. 68, No. 2 ( 2007-09), p. 213-219
    Details
    In: Quaternary Research, Cambridge University Press (CUP), Vol. 68, No. 2 ( 2007-09), p. 213-219
    Abstract: A vertebrate burrow-bearing layer of late Pleistocene age is commonly found at many Paleolithic archaeological sites in Korea. The burrows are straight to slightly curved in horizontal (plan) view and gently inclined in lateral (sectional) view. They are interpreted as having been produced by rodent-like mammals based on their size and architecture. The significance of such burrow-bearing layers as a characteristic stratigraphic marker unit is demonstrated by high burrow abundance, consistent stratigraphic position, lack of stratigraphic recurrence at these sites, and widespread geographic extent. Three dating methods, tephrochronology, radiocarbon, and OSL dating, were used to infer the age of these burrow-bearing layers. The dating results indicate that they were formed between ca. 40,000 and 25,000 yr (MIS 3−2), and this suggests that this layer can be used as a stratigraphic time-marker in late Pleistocene paleosol sequences for this region.
    Type of Medium: Online Resource
    ISSN: 0033-5894 , 1096-0287
    URL: Article
    DOI: 10.1016/j.yqres.2007.05.001
    RVK:
    RA 1000
    Language: English
    Publisher: Cambridge University Press (CUP)
    Publication Date: 2007
    detail.hit.zdb_id: 1471589-2
    detail.hit.zdb_id: 205711-6
    SSG: 13
    SSG: 14
    Location Call Number Limitation Availability
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    Online Resource
  • 3
    Online Resource
    Online Resource
    GCM‐related uncertainty in forecasting irrigation and design water requirement for paddy rice fields
    Wiley ; 2018
    In:  International Journal of Climatology Vol. 38, No. 3 ( 2018-03), p. 1298-1313
    Details
    In: International Journal of Climatology, Wiley, Vol. 38, No. 3 ( 2018-03), p. 1298-1313
    Abstract: The aim of this study is to identify the global circulation model (GCM)‐related uncertainties regarding the climate‐change impacts that affect the water management in paddy rice fields. The crop evapotranspiration, effective rainfall, net irrigation water requirement (NIWR), and design water requirement (DWR) were simulated from 1981 to 2100 using 36 climate‐change outputs of 23 GCMs. In particular, the DWR indicates the NIWR of a drought with a 10‐year return period, which is used for the design of an agricultural reservoir in the Republic of Korea. The NIWR is the main factor for determining irrigation water supply and managing agricultural water resource. The average changes of the NIWR compared with the periods from 1981 to 2014 are from 5.2 to 8.3% in the central region and from 3.2 to 6.1% in the southern region under RCP (representative concentration pathways) 4.5. The largest increase from the average NIWR was simulated by the MIROC‐ESM (745.8 mm year −1 ). These results showed that the selection of GCM could lead to overestimates or underestimates of the potential impacts of climate change. Therefore, water managers should consider that each GCM simulated a different NIWR to enable the application of the appropriate GCMs for drought management, water‐resource development, or irrigation supply. Under the GCMS variations, an NIWR was identified, thereby allowing for a DWR estimation for which multi‐GCMs were used. Under RCP 4.5, the DWR gradually increased in future periods compared with the trends from 1981 to 2014, and the average rates increased 9.4% and 6.0% in the central and southern regions, respectively. The results showed that if the capacity of an agricultural water‐resource facility is maintained at its present status, an increase of the DWR may lead to water‐supply shortage.
    Type of Medium: Online Resource
    ISSN: 0899-8418 , 1097-0088
    URL: Issue
    URL: Article
    DOI: 10.1002/joc.2018.38.issue-3
    DOI: 10.1002/joc.5244
    RVK:
    RA 1000
    Language: English
    Publisher: Wiley
    Publication Date: 2018
    detail.hit.zdb_id: 1491204-1
    SSG: 14
    Location Call Number Limitation Availability
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