DOI: 10.1016/j.foreco.2013.06.045
Scopus记录号: 2-s2.0-84881015039
论文题名: Crossdating of disturbances by tree uprooting: Can treethrow microtopography persist for 6000years?
作者: Šamonil P. ; Schaetzl R.J. ; Valtera M. ; Goliáš V. ; Baldrian P. ; Vašíčková I. ; Adam D. ; Janík D. ; Hort L.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 307 起始页码: 123
结束页码: 135
语种: 英语
英文关键词: Dendrochronology
; Pb-210
; Radiocarbon
; Soil disturbance dating
; Tree-census
; Tree-uprooting microtopography
Scopus关键词: Dendrochronology
; Micro topography
; Pb-210
; Radiocarbon
; Soil disturbances
; Tree-census
; Cesium
; Charcoal
; Climatology
; Ecosystems
; Lead
; Population statistics
; Soils
; Surveys
; Forestry
; census
; charcoal
; dendrochronology
; environmental disturbance
; forest ecosystem
; fungus
; lead isotope
; longevity
; microtopography
; paleoecology
; radiocarbon dating
; radiometric method
; rooting
; sedimentation rate
; treehole
; Cesium
; Charcoal
; Ecosystems
; Forestry
; Lead
; Meteorology
; Soil
; Surveys
; Central Europe
; Great Lakes [North America]
英文摘要: Establishing disturbance frequencies in different types of forest ecosystems is an area of considerable research. We use several overlapping dating methods - robust repeated tree-censuses, dendrochronology and radiometric techniques (radionuclides 14C, 210Pb, 137Cs, 226Ra) - to date 302 pit-mounds, formed by uprooting, in 3 different forest ecosystems. Our research goal was to better understand the disturbance frequencies in these ecosystems and establish the potential longevity of treethrow mounds. At the same time, we tested the applicability of multiple dating methods in different kinds of stands, including two sites in Central Europe and one in the Great Lakes region, USA.We used tree-census data to establish the ages of the youngest (<37yr) uprooting events, 210Pb dating (including 137Cs and 226Ra) to date treethrow events younger than ca. 200years, dendrochronological dating for sites less than ca. 400years old, and radiocarbon dating for assumed older sites. In order to maximize the reliability of these age estimates, we compared the dates by evaluating different methods with maximal overlap - a method we call crossdating. Theoretically, our data provide (i) "minimum-limiting" ages of disturbance events, using dendrochronology, tree-censuses, 210Pb- and/or 14C-dating of samples from the organo-mineral sedimentation funnel within the treethrow pit, (ii) "real" ages of events, using dendrochronology, and/or (iii) "upper-real" or "maximum-limiting" ages of the events, using 14C-dating on remnants of uprooted trunks and charcoal from buried A-horizons in mounds.Responses in the radial growth of trees near by uprooting disturbances were usually detectable for 20years, and were specific to each region and tree species. Repeated tree-censuses (13,795 trees from 72.84ha) suggested that the ratio of bole breakages to uprootings was 2-3:1, and that the treethrow rotation period approximated 1250-1380years for some sites in Central Europe. At our European, beech-dominated sites, the maximal longevity of the treethrow microtopography was ca. 220years on the fine-textured Haplic Cambisols and exceeded 1700years on sandy-loam Entic Podzols. Finally, on the sand-textured Albic Podzols of northern Michigan, even greater longevities were achieved, with one mound returning a 14C age of 5260±30 BP (median of calibration age 4077 BC) - by far the oldest feature reported in the literature. Sedimentation rates in treethrow pits, calculated using the 210Pb technique, were 0.05-0.28cmyear-1 in the beech-dominated European forests, and 0.07-1.4cmyear-1 in the hardwoods of Michigan. Radiocarbon dating of fungal sclerotia in treethrow pits can also help inform the disturbance history. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66394
Appears in Collections: 影响、适应和脆弱性
There are no files associated with this item.
作者单位: Department of Forest Ecology, Silva Tarouca Research Institute for Landscape and Ornamental Gardening, Lidicka 25/27, 657 20 Brno, Czech Republic; Department of Geography, Michigan State University, 128 Geography Building, East Lansing, MI 48824, United States; Faculty of Forestry and Wood Technology, Mendel University in Brno, Zemedelska 1, 613 00 Brno, Czech Republic; Institute of Geochemistry, Mineralogy and Mineral Resources, Faculty of Science, Charles University in Prague, Albertov 6, 128 43 Prague 2, Czech Republic; Laboratory of Environmental Microbiology, Institute of Microbiology of the ASCR v.v.i., Videnska 1083, 14220 Praha 4, Czech Republic
Recommended Citation:
Šamonil P.,Schaetzl R.J.,Valtera M.,et al. Crossdating of disturbances by tree uprooting: Can treethrow microtopography persist for 6000years?[J]. Forest Ecology and Management,2013-01-01,307