Siberian pine decline and mortality in southern siberian mountains

Харук, В. И.; Im, Sergei T.; Oskorbin, P. A.; Petrov, Il’ya A.; Ranson, K.J.

doi:10.1016/j.foreco.2013.08.042

Cited by 59 publications

(52 citation statements)

References 32 publications

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“…Application of the drought-triggered fire regime to simulation of potential future climate based on linear extrapolation of observed warming ( Figure A1d) in the region along the southern boundary of the boreal zone results in greater incidence of drought, both on the south-facing slope and at lower elevations along north-facing slopes. Under this warming scenario, vegetation shifts upslope on both aspects, and the ribbon forests on the south-facing slopes decrease in vigor and biovolume, which is in accordance with observations [38,39,85] and previous modeling studies [47,86]. Warming ambient temperatures increase the PET demands on vegetation, but if no concurrent increase in precipitation occurs, vegetation becomes stressed and either dies from temperature-based drought stress or more easily succumbs to mortality from insects, fire, pathogens, or windthrow.…”

Section: Drought-triggered Firesupporting

confidence: 90%

Simulating Changes in Fires and Ecology of the 21st Century Eurasian Boreal Forests of Siberia

Brazhnik¹,

Hanley²,

Shugart³

2017

Forests

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Abstract:Wildfires release the greatest amount of carbon into the atmosphere compared to other forest disturbances. To understand how current and potential future fire regimes may affect the role of the Eurasian boreal forest in the global carbon cycle, we employed a new, spatially-explicit fire module DISTURB-F (DISTURBance-Fire) in tandem with a spatially-explicit, individually-based gap dynamics model SIBBORK (SIBerian BOReal forest simulator calibrated to Krasnoyarsk Region). DISTURB-F simulates the effect of forest fire on the boreal ecosystem, namely the mortality of all or only the susceptible trees (loss of biomass, i.e., carbon) within the forested landscape. The fire module captures some important feedbacks between climate, fire and vegetation structure. We investigated the potential climate-driven changes in the fire regime and vegetation in middle and south taiga in central Siberia, a region with extensive boreal forest and rapidly changing climate. The output from this coupled simulation can be used to estimate carbon losses from the ecosystem as a result of fires of different sizes and intensities over the course of secondary succession (decades to centuries). Furthermore, it may be used to assess the post-fire carbon storage capacity of potential future forests, the structure and composition of which may differ significantly from current Eurasian boreal forests due to regeneration under a different climate.

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Section: Drought-triggered Firesupporting

confidence: 90%

Simulating Changes in Fires and Ecology of the 21st Century Eurasian Boreal Forests of Siberia

Brazhnik¹,

Hanley²,

Shugart³

2017

Forests

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“…Radiation increase + Inventory data of growing stock volume, NDVI data set from Advanced Very High Resolution Radiometer (AVHRR), measurements of tree ring-widths Myneni et al (1997), Ichii et al (2013), Berner et al (2013) Heat waves MODIS-derived enhanced vegetation index Kharuk et al (2013), periods of severe mortality in coniferous forests were observed during the past decades, including e.g. spruce-fir forests in northern European Russia and the Russian Far East, Siberian pine (Pinus sibirica) in Central Siberia (Man'ko and Gladkova, 2001;.…”

Section: Drivermentioning

confidence: 99%

“…spruce-fir forests in northern European Russia and the Russian Far East, Siberian pine (Pinus sibirica) in Central Siberia (Man'ko and Gladkova, 2001;. Kharuk et al (2013) suggest that soil water stress is the main factor in forest mortality in the eastern Kuznetzky Alatau Mountains of South Siberia. They detected pine mortality primarily on areas with steep slope; birch and aspen trees in the same area, however, did not show drought stress.…”

Section: Drivermentioning

confidence: 99%

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Tamm Review: Observed and projected climate change impacts on Russia’s forests and its carbon balance

Schaphoff

Reyer

Schepaschenko

et al. 2016

Forest Ecology and Management

108

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a b s t r a c tRussia's boreal forests provide numerous important ecosystem functions and services, but they are being increasingly affected by climate change. This review presents an overview of observed and potential future climate change impacts on those forests with an emphasis on their aggregate carbon balance and processes driving changes therein. We summarize recent findings highlighting that radiation increases, temperature-driven longer growing seasons and increasing atmospheric CO 2 concentrations generally enhance vegetation productivity, while heat waves and droughts tend to decrease it. Estimates of major carbon fluxes such as net biome production agree that the Russian forests as a whole currently act as a carbon sink, but these estimates differ in terms of the magnitude of the sink due to different methods and time periods used. Moreover, models project substantial distributional shifts of forest biomes, but they may overestimate the extent to which the boreal forest will shift poleward as past migration rates have been slow. While other impacts of current climate change are already substantial, and projected impacts could be both large-scale and disastrous, the likelihood for a tipping point behavior of Russia's boreal forest is still unquantified. Other substantial research gaps include the large-scale effect of (climate-driven) disturbances such as fires and insect outbreaks, which are expected to increase in the future. We conclude that the impacts of climate change on Russia's boreal forest are often superimposed by other environmental and societal changes in a complex way, and the interaction of these developments could exacerbate both existing and projected future challenges. Hence, development of adaptation and mitigation strategies for Russia's forests is strongly advised.

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“…Lack of precipitation (or increased variability in rainfall and drought events) and increases in temperature could be major factors responsible for reduced tree growth as well as increased mortality and susceptibility to insects and diseases (Hanson and Weltzin, 2000;Allen et al, 2010;Adams et al, 2012;Williams et al, 2012). Pines are particularly susceptible to the negative effects of drought globally (Bigler et al, 2006;Klos et al, 2009;Kharuk et al, 2013;Granda et al, 2014) and especially in the southeastern U.S. (Vose and Swank, 1994;Bhuta et al, 2009;Bracho et al, 2012;Graham et al, 2012).…”

Section: Drought and Climate Changementioning

confidence: 99%