Comparative Reaction of Larch (Larix sibirica Ledeb.) Radial Increment to Climate Change in the Forest-Steppe and Highlands of Southern Siberia

2018 ◽  
Keyword(s):  
Climate Change ◽  
Larix Sibirica ◽  
Forest Steppe ◽  
Radial Increment ◽  
Southern Siberia

Comparative Reaction of Larch (Larix sibirica Ledeb.) Radial Increment on Climate Change in the Forest Steppe and Highlands of Southern Siberia

2018 ◽  
Vol 11 (4) ◽  
pp. 388-395 ◽  
Author(s):  
V. I. Kharuk ◽  
I. A. Petrov ◽  
M. L. Dvinskaya ◽  
S. T. Im ◽  
A. S. Shushpanov
Keyword(s):  
Climate Change ◽  
Larix Sibirica ◽  
Forest Steppe ◽  
Radial Increment ◽  
Southern Siberia

scholarly journals The radial increment of European ash (Fraxinus excelsior L.) under climate change, Ukraine

2020 ◽  
Vol 66 (No. 7) ◽  
pp. 288-298
Author(s):  
Iryna Koval ◽  
Nadiya Maksymenko
Keyword(s):  
Climate Change ◽  
Radial Growth ◽  
Winter Precipitation ◽  
Fraxinus Excelsior ◽  
Forest Steppe ◽  
Radial Increment ◽  
Ash Trees ◽  
Negative Effect ◽  
Second Period ◽  
European Ash

 The aim of the study was to compare the response of the radial increment of European ash (Fraxinus excelsior L.) in the Western and Eastern forest steppe of Ukraine to climate change. The growth-climate relationships were estimated for 1961–1987 and 1988–2014 in Western and Eastern parts of the forest steppe. The results indicate that the sensitivity of the ash radial increment in stands of the Western and Eastern forest steppe to climate variations in the second period (1988–2014) was increased compared to the first period (1961–1987). In the second period correlation analysis and response function showed a negative effect of summer droughts on the ash radial increment for both stands. Also a negative effect of winter precipitation on tree rings of ash trees in the Western forest steppe during the second period was detected. The radial growth response to climate change showed an increase in the response of European ash radial growth to climate change, which was confirmed for European ash for both stands in the Western and Eastern forest steppe.

scholarly journals Climate Variability May Delay Post-Fire Recovery of Boreal Forest in Southern Siberia, Russia

2021 ◽  
Vol 13 (12) ◽  
pp. 2247
Author(s):  
Qiaoqi Sun ◽  
Arden Burrell ◽  
Kirsten Barrett ◽  
Elena Kukavskaya ◽  
Ludmila Buryak ◽  
...  
Keyword(s):  
Climate Change ◽  
Climate Variability ◽  
Scots Pine ◽  
Vegetation Index ◽  
Fire Regime ◽  
Climatic Conditions ◽  
Forest Steppe ◽  
Strong Impact ◽  
Southern Siberia ◽  
Increased Temperature

Prolonged dry periods and increased temperatures that result from anthropogenic climate change have been shown to increase the frequency and severity of wildfires in the boreal region. There is growing evidence that such changes in fire regime can reduce forest resilience and drive shifts in post-fire plant successional trajectories. The response of post-fire vegetation communities to climate variability is under-studied, despite being a critical phase determining the ultimate successional conclusion. This study investigated the responses of post-fire recruited species to climate change and inter-annual variability at 16 study sites that experienced high-severity fire events, mostly in early 2000, within the Scots pine forest-steppe zone of southeastern Siberia, Russia. These sites were originally dominated by Scots pine, and by 2018, they were recruited by different successional species. Additionally, three mature Scots pine stands were included for comparison. A Bayesian Additive Regression Trees (BART) approach was used to model the relationship between Landsat-derived Normalized Difference Vegetation Index (NDVI) time series, temperature and precipitation in the 15 years after a stand-replacing fire. Using the resulting BART models, together with six projected climate scenarios with increased temperature and enhanced inner-annual precipitation variability, we simulated NDVI at 5-year intervals for 15 years post-fire. Our results show that the BART models performed well, with in-sample Pseudo-R2 varying from 0.49 to 0.95 for fire-disturbed sites. Increased temperature enhanced greenness across all sites and across all three time periods since fires, exhibiting a positive feedback in a warming environment. Repeatedly dry spring periods reduced NDVI at all the sites and wetter summer periods following such dry springs could not compensate for this, indicating that a prolonged dry spring has a strong impact consistently over the entire early developmental stages from the initial 5 years to 15 years post-fire. Further, young forests showed higher climate sensitivity compared to the mature forest, irrespective of species and projected climatic conditions. Our findings suggest that a dry spring not only increases fire risk, but also delays recovery of boreal forests in southern Siberia. It also highlights the importance of changing rainfall seasonality as well as total rainfall in a changing climate for post-fire recovery of forest.

Justification of irrigation restoration in the central forest-steppe taking into account the climate change trend

2019 ◽  
Vol 97 (12) ◽  
pp. 59-65
Author(s):  
R. Sajdak ◽  
Ja. Tsvej ◽  
Ju. Tarariko
Keyword(s):  
Climate Change ◽  
Forest Steppe ◽  
Change Trend

scholarly journals Modelling the productivity of Siberian larch forests from Landsat NDVI time series in fragmented forest stands of the Mongolian forest-steppe

2021 ◽  
Vol 193 (4) ◽  
Author(s):  
Stefan Erasmi ◽  
Michael Klinge ◽  
Choimaa Dulamsuren ◽  
Florian Schneider ◽  
Markus Hauck
Keyword(s):  
Climate Change ◽  
Time Series ◽  
Global Climate Change ◽  
Global Climate ◽  
Siberian Larch ◽  
Growing Season ◽  
Forest Productivity ◽  
Forest Steppe ◽  
Fragmented Forest ◽  
Southern Fringe

AbstractThe monitoring of the spatial and temporal dynamics of vegetation productivity is important in the context of carbon sequestration by terrestrial ecosystems from the atmosphere. The accessibility of the full archive of medium-resolution earth observation data for multiple decades dramatically improved the potential of remote sensing to support global climate change and terrestrial carbon cycle studies. We investigated a dense time series of multi-sensor Landsat Normalized Difference Vegetation Index (NDVI) data at the southern fringe of the boreal forests in the Mongolian forest-steppe with regard to the ability to capture the annual variability in radial stemwood increment and thus forest productivity. Forest productivity was assessed from dendrochronological series of Siberian larch (Larix sibirica) from 15 plots in forest patches of different ages and stand sizes. The results revealed a strong correlation between the maximum growing season NDVI of forest sites and tree ring width over an observation period of 20 years. This relationship was independent of the forest stand size and of the landscape’s forest-to-grassland ratio. We conclude from the consistent findings of our case study that the maximum growing season NDVI can be used for retrospective modelling of forest productivity over larger areas. The usefulness of grassland NDVI as a proxy for forest NDVI to monitor forest productivity in semi-arid areas could only partially be confirmed. Spatial and temporal inconsistencies between forest and grassland NDVI are a consequence of different physiological and ecological vegetation properties. Due to coarse spatial resolution of available satellite data, previous studies were not able to account for small-scaled land-cover patches like fragmented forest in the forest-steppe. Landsat satellite-time series were able to separate those effects and thus may contribute to a better understanding of the impact of global climate change on natural ecosystems.

Radial increment dynamics of Scots pine (Pinus sylvestris L.) as an indicator of hydrothermal regime of the Western Transbaikalia forest steppe

2017 ◽  
Vol 10 (5) ◽  
pp. 476-487 ◽  
Author(s):  
A. V. Demina ◽  
L. V. Belokopytova ◽  
S. G. Andreev ◽  
T. V. Kostyakova ◽  
E. A. Babushkina
Keyword(s):  
Pinus Sylvestris ◽  
Scots Pine ◽  
Forest Steppe ◽  
Radial Increment ◽  
Western Transbaikalia ◽  
Hydrothermal Regime

SPATIOTEMPORAL DYNAMICS OF AQUATIC AND ASSOCIATED GEOSYSTEMS IN THE SOUTH OF WESTERN SIBERIA UNDER CLIMATE CHANGE

2020 ◽  
Author(s):  
Dmitriy Chernykh ◽  
Dmitriy Zolotov ◽  
Roman Biryukov ◽  
Dmitriy Pershin
Keyword(s):  
Climate Change ◽  
Western Siberia ◽  
Soil Cover ◽  
Spatiotemporal Dynamics ◽  
Significant Part ◽  
Forest Steppe ◽  
Lake Levels ◽  
The South ◽  
Plant Associations

An unstable lake levels are characteristic for the Ob Plateau territory. Moreover, there are reciprocal level fluctuations. In this regard, both in the steppe and forest-steppe zones of the Plateau, a significant part of geosystems of underlying locations are periodically affected by the hydromorphic factor. It is manifested in the structure of soil cover, micro- and nanorelief, and composition of plant associations.

Climate change versus land-use change—What affects the ecosystem services more in the forest-steppe ecotone?

2021 ◽  
Vol 759 ◽  
pp. 143525
Author(s):  
Fengqi Cui ◽  
Bojie Wang ◽  
Qin Zhang ◽  
Haiping Tang ◽  
Philippe De Maeyer ◽  
...  
Keyword(s):  
Climate Change ◽  
Land Use ◽  
Ecosystem Services ◽  
Land Use Change ◽  
Forest Steppe

scholarly journals Climate response of tree-ring width in Larix sibirica growing in the drought-stressed forest-steppe ecotone of northern Mongolia

2011 ◽  
Vol 68 (2) ◽  
pp. 275-282 ◽  
Author(s):  
Choimaa Dulamsuren ◽  
Markus Hauck ◽  
Hanns Hubert Leuschner ◽  
Christoph Leuschner
Keyword(s):  
Tree Ring ◽  
Ring Width ◽  
Larix Sibirica ◽  
Forest Steppe ◽  
Climate Response ◽  
Tree Ring Width ◽  
Northern Mongolia
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