DOI: 10.1016/j.palaeo.2017.01.047
论文题名: Last 1000 years of environmental history in Southern Bucovina, Romania: A high resolution multi-proxy lacustrine archive
作者: Florescu G. ; Hutchinson S.M. ; Kern Z. ; Mîndrescu M. ; Cristea I.A. ; Mihăilă D. ; Łokas E. ; Feurdean A.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2017
卷: 473 起始页码: 26
结束页码: 40
语种: 英语
英文关键词: Catchment erosion
; Climate change
; Human impact
; Lake sediments
; Last millennium
; Palaeoenvironmental reconstruction
英文摘要: Geo-ecological and landscape change studies at a local scale are scarce in Central-Eastern Europe and particularly in Romania. However, this focus is directly relevant to ecosystems and humans as both are dependent on local environmental changes. We perform a high-resolution, multi-proxy analysis of physical and geochemical sediment properties, coupled to plant macrofossil, pollen and charcoal analysis at Iezerul Sadovei Lake and present the first palaeoenvironmental reconstruction from Bucovina Mountains, the north-eastern Romania. The sedimentary record, spanning the last 950 years, is laminated throughout and reveals high intensity catchment responses to changes in hydrological conditions and human impact. Results show major landscape disturbances 950 years ago and during the last 200 years. The enhanced catchment instability from the onset of sedimentation to 1400 CE was characterised by landsliding and subsequent erosion and related mainly to natural factors. However, the most recent (since c. 1800 CE) environmental changes, i.e., deforestation, enhanced channel and slope erosion and lake in-filling are a consequence of direct human interventions. Changes in the composition and extent of forest cover were also driven by the combination of natural disturbances, climate variability and anthropogenic activities. From 1400 CE, and more clearly over the last 200 years, early successional and disturbed habitat taxa appeared to respond primarily to anthropogenic drivers, including forest management. The higher proportion of Abies alba (30%) and Fagus sylvatica (20%) in the local forest, and their dramatic decline, was recorded earlier (i.e., 1150 CE and 1400 CE respectively) than reported in other parts of the Romanian Carpathians. Using this palaeoenvironmental evidence as an analogue, projected climate changes, i.e., increased seasonal heavy precipitation and more frequent extreme events, superimposed on increasing human pressure are likely to lead to the destabilisation of the catchment through erosion and possible reactivation of landslides. © 2017 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/67865
Appears in Collections: 过去全球变化的重建
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作者单位: Stefan cel Mare University, Department of Geography, 13 Universităţii Street, Suceava, Romania; School of Environment and Life Sciences, University of Salford, Salford, Greater Manchester, United Kingdom; Institute for Geological and Geochemical Research, Research Centre for Astronomy and Earth Sciences MTA, Budaörsi street 45, Budapest, Hungary; Institute of Nuclear Physics, Polish Academy of Sciences, Radzikowskiego 152, Krakow, Poland; Babeş-Bolyai University, Department of Geology, 1 M. Kogalniceanu str., Cluj-Napoca, Romania; Biodiversity and Climate Research Centre BiK-F, 25 Senckenberganlage, Frankfurt am Main, Germany
Recommended Citation:
Florescu G.,Hutchinson S.M.,Kern Z.,et al. Last 1000 years of environmental history in Southern Bucovina, Romania: A high resolution multi-proxy lacustrine archive[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2017-01-01,473