DOI: 10.1016/j.foreco.2013.08.042
Scopus记录号: 2-s2.0-84884132125
论文题名: Siberian pine decline and mortality in southern siberian mountains
作者: Kharuk V.I. ; Im S.T. ; Oskorbin P.A. ; Petrov I.A. ; Ranson K.J.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 310 起始页码: 312
结束页码: 320
语种: 英语
英文关键词: Climate-induced tree mortality
; Drought impact on forests
; Siberian pine decline
; Tree die-off
Scopus关键词: Climate variables
; Die-off
; Precipitation gradients
; Russian far east
; Siberian pine decline
; Spatial patterns
; Tree mortality
; Vegetation index
; Drought
; Landforms
; Radiometers
; Water supply
; Forestry
; aridity
; coniferous tree
; data interpretation
; dendrochronology
; drought resistance
; drought stress
; evapotranspiration
; growth rate
; Landsat
; MODIS
; mortality
; mountain region
; population decline
; satellite data
; vegetation index
; Drought
; Forestry
; Water Supply
; Kuznetsk Alatau
; Russian Federation
; Siberia
英文摘要: The causes and resulting spatial patterns of Siberian pine mortality in eastern Kuznetzky Alatau Mountains, Siberia were analyzed based on satellite (Landsat, MODIS) and dendrochronology data. Climate variables studied included temperature, precipitation and Standardized Precipitation-Evapotranspiration Index (SPEI) drought index. Landsat data analysis showed that stand mortality was first detected in the year 2006 at an elevation of 650m, and extended up to 900m by the year 2012. Mortality was accompanied by a decrease in MODIS-derived vegetation index (EVI). The area of dead stands and the upper mortality line were correlated with increased drought. The uphill margin of mortality was limited by elevational precipitation gradients. Dead stands (i.e., >75% tree mortality) were located mainly on southern slopes. With respect to slope, mortality was observed within a 7-20° range with greatest mortality occurring on convex terrain. Tree radial increment measurements correlate and were synchronous with SPEI (r2=0.37, rs=80). The results also showed the primary role of drought stress on Siberian pine mortality. A secondary role may be played by bark beetles and root fungi attacks. The observed Siberian pine mortality is part of a broader phenomenon of "dark needle conifers" (DNC, i.e., Siberian pine, fir and spruce) decline and mortality in European Russia, Siberia, and the Russian Far East. All locations of DNC decline coincided with areas of observed drought increase. The results obtained are one of the first observations of drought-induced decline and mortality of DNC at the southern border of boreal forests. Meanwhile if model projections of increased aridity are correct DNC within the southern part of its areal may be replaced by drought-resistant Pinus silvestris and Larix sibirica. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66268
Appears in Collections: 影响、适应和脆弱性
There are no files associated with this item.
作者单位: V.N. Sukachev Institute of Forest, Siberian Federal University, Krasnoyarsk, Russian Federation; NASA's Goddard Space Flight Center, Greenbelt, MD 20771, United States
Recommended Citation:
Kharuk V.I.,Im S.T.,Oskorbin P.A.,et al. Siberian pine decline and mortality in southern siberian mountains[J]. Forest Ecology and Management,2013-01-01,310