If you need an accessible version of this item please contact JSTOR User Support

A 538-Year Record of Climate and Treeline Dynamics from the Lower Lena River Region of Northern Siberia, Russia

G. M. MacDonald, R. A. Case and J. M. Szeicz
Arctic and Alpine Research
Vol. 30, No. 4 (Nov., 1998), pp. 334-339
DOI: 10.2307/1552005
Stable URL: http://www.jstor.org/stable/1552005
Page Count: 6
  • Download PDF
  • Cite this Item

You are not currently logged in.

Access your personal account or get JSTOR access through your library or other institution:

login

Log in to your personal account or through your institution.

If you need an accessible version of this item please contact JSTOR User Support
A 538-Year Record of Climate and Treeline Dynamics from the Lower Lena River Region of Northern Siberia, Russia
Preview not available

Abstract

A 538-yr tree-ring chronology and reconstruction of June temperatures were developed from living and dead Larix dahurica trees. The samples were obtained near the lower Lena River in northern Siberia. Dendrochronological techniques were used to estimate the ages of establishment and mortality of Larix dahurica on the presently treeless uplands and to determine the establishment dates of living trees in the lowlands. The 20th century may have experienced the greatest prolonged period of high June temperatures over the past 538 yr. In contrast the greatest prolonged period of cold appears to have occurred during the first half of the 19th century. It was during the 19th century that the uplands lost much of their tree and soil cover. Recruitment of trees occurred in the lowlands during the 20th century, but trees have not been able to recolonize the uplands, possibly due to the lack of suitable soil.

Page Thumbnails

  • Thumbnail: Page 
334
    334
  • Thumbnail: Page 
335
    335
  • Thumbnail: Page 
336
    336
  • Thumbnail: Page 
337
    337
  • Thumbnail: Page 
338
    338
  • Thumbnail: Page 
339
    339