气候变化领域集成服务门户(CCPortal): Tree rings reveal dry conditions during Charlemagne's Fossa Carolina construction in 793 CE

CCPortal

DOI	10.1016/j.quascirev.2019.106040
	Tree rings reveal dry conditions during Charlemagne's Fossa Carolina construction in 793 CE
	Muigg B.; Seim A.; Tegel W.; Werther L.; Herzig F.; Schmidt J.; Zielhofer C.; Land A.; Büntgen U.
发表日期	2020
ISSN	0277-3791
卷号	227
英文摘要	The first navigable canal across the main European watershed in southern Germany was the most ambitious and visionary hydro-engineering project of the Early Middle Ages, known as Charlemagne's Fossa Carolina. Hydrological conditions would have been crucial for both the construction process and subsequent navigability. Written sources specify that heavy rain was a crucial factor for the abandonment of the project in late 793 CE, a few months after digging began. Our understanding of past climate variability in this region is, however, limited by the lack of high-resolution proxy archives. Here, we use annually resolved and absolutely dated ring-width measurements of 2469 drought sensitive oaks (Quercus sp.) from Bavaria, Germany, to reconstruct regional changes in hydroclimate back to 500 CE. Periods of anomalously dry summers occurred from ∼600 to 800, ∼900–1000, ∼1200–1400 and ∼1700–1900 CE, whereas increased humidity characterized the 9th century, High Middle Ages (11th–12th century) and the 17th century CE. Relatively dry conditions during the construction period favoured the building progress of the Fossa Carolina. However, the heavy rain which stopped the project in 793 CE is not reflected in radial oak growth. This is likely related to i) the historically recorded event happened outside the growing season and ii) compared to dry extremes, wet extremes are generally less pronounced in tree-ring width. Nevertheless, our results provide the first local hydroclimate reconstruction covering the entire Early Middle Ages and thus, placing the Fossa Carolina in a long-term high-resolution environmental perspective. © 2019 Elsevier Ltd
英文关键词	Anthropocene; Bavaria; Carolingian period; Central Europe; Dendrochronology; Drought reconstruction; Early Middle Ages; Late Holocene; Paleoclimatology; Tree-rings
语种	英语
scopus关键词	Climatology; Drought; Forestry; Rain; Anthropocene; Bavaria; Carolingian period; Central Europe; Dendrochronology; Late Holocene; Middle ages; Paleoclimatology; Tree rings; Construction; Anthropocene; deciduous tree; dendrochronology; drought; growing season; Holocene; hydrometeorology; Middle Ages; nineteenth century; paleoclimate; reconstruction; tree ring; watershed; Bavaria; Carolina; Germany; Puerto Rico; Quercus
来源期刊	Quaternary Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/151664
作者单位	Institute of Forest Sciences, Chair of Forest History, Albert-Ludwigs-University Freiburg, Freiburg, 79106, Germany; Institute of Forest Sciences, Chair of Forest Growth, Albert-Lufwigs-University Freiburg, Freiburg, 79106, Germany; Department for Medieval Archaeology, Eberhard Karls University, Tübingen, 72070, Germany; Bavarian State Department for Cultural Heritage, Thierhaupten, 86672, Germany; Institute of Geography, Chair of Physical Geography, Leipzig University, Leipzig, 04103, Germany; Institute of Botany (210a), University of Hohenheim, Stuttgart, 70599, Germany; University of Applied Forest Sciences, Schadenweilerhof, Rottenburg am Neckar 72108, Germany; Department of Geography, University of Cambridge, Downing Place, CB2 3EN, United Kingdom; Swiss Federal Research Institute WSL, Zürcherstr 111, Birmensdorf, 8903, Switzerland; Global Change Research Centre (CzechGlobe), Bělidla 986/4a, Brno, 603 00, Czech Republic; Department of Geography, Faculty of Science, Masaryk University, Kotlářská 2, B...
推荐引用方式 GB/T 7714	Muigg B.,Seim A.,Tegel W.,et al. Tree rings reveal dry conditions during Charlemagne's Fossa Carolina construction in 793 CE[J],2020,227.
APA	Muigg B..,Seim A..,Tegel W..,Werther L..,Herzig F..,...&Büntgen U..(2020).Tree rings reveal dry conditions during Charlemagne's Fossa Carolina construction in 793 CE.Quaternary Science Reviews,227.
MLA	Muigg B.,et al."Tree rings reveal dry conditions during Charlemagne's Fossa Carolina construction in 793 CE".Quaternary Science Reviews 227(2020).