Polyvariance of Ontogeny of Alluvial and Nonalluvial Species of Salix L. (Salicaceae) of the Boreal Zone of Eurasia

2021 ◽  
Vol 14 (5) ◽  
pp. 408-420
Author(s):  
O. I. Nedoseko
Keyword(s):  
2020 ◽  
Vol 35 (4) ◽  
pp. 685-693
Author(s):  
D. A. Danilov ◽  
A. V. Griazkin ◽  
V. A. Sokolova ◽  
I. V. Bacherikov

AbstractThe present study analyzes the composition of pine wood cultivated on artificial plantations in the Leningrad Oblast (Region). Comparing to pine wood from natural stands, a smaller heartwood zone along the height of the pine trunk and a lower content of resinous substances are noted. The content of cellulose and lignin in the heartwood and sapwood of pine is distributed differently along the trunk. The distribution of pentosans and water-soluble substances in the heartwood and sapwood along the trunk is associated with the lignin complex. The component composition of the studied pine wood from planted stands is quite uniform in its indicators if compared to the wood of older natural stands. Sulphate pulping of planted pine wood showed a higher yield of technical cellulose than the average yield from wood obtained at natural stands of the studied region.


2010 ◽  
Vol 48 (10) ◽  
pp. 3652-3662 ◽  
Author(s):  
Anne Lonnqvist ◽  
Yrjö Rauste ◽  
Matthieu Molinier ◽  
Tuomas Hame

2019 ◽  
Vol 27 (2) ◽  
pp. 185-199 ◽  
Author(s):  
James W.N. Steenberg ◽  
Peter N. Duinker ◽  
Irena F. Creed ◽  
Jacqueline N. Serran ◽  
Camille Ouellet Dallaire

In response to global climate change, Canada is transitioning towards a low-carbon economy and the need for policy approaches that are effective, equitable, coordinated, and both administratively and politically feasible is high. One point is clear; the transition is intimately tied to the vast supply of ecosystem services in the boreal zone of Canada. This paper describes four contrasting futures for the boreal zone using scenario analysis, which is a transdisciplinary, participatory approach that considers alternative futures and policy implications under conditions of high uncertainty and complexity. The two critical forces shaping the four scenarios are the global economy’s energy and society’s capacity to adapt. The six drivers of change are atmospheric change, the demand for provisioning ecosystem services, the demand for nonprovisioning ecosystem services, demographics, and social values, governance and geopolitics, and industrial innovation and infrastructure. The four scenarios include: (i) the Green Path, where a low-carbon economy is coupled with high adaptive capacity; (ii) the Uphill Climb, where a low-carbon economy is instead coupled with low adaptive capacity; (iii) the Carpool Lane, where society has a strong capacity to adapt but a reliance on fossil fuels; and (iv) the Slippery Slope, where there is both a high-carbon economy and a society with low adaptive capacity. The scenarios illustrate the importance of transitioning to a low-carbon economy and the role of society’s adaptive capacity in doing so. However, they also emphasize themes like social inequality and adverse environmental outcomes arising from the push towards climate change mitigation.


Flora ◽  
1974 ◽  
Vol 163 (3) ◽  
pp. 230-250 ◽  
Author(s):  
Hiltrun E. Von Riedmüller-Schölm

2018 ◽  
Vol 45 (3) ◽  
pp. 288-297 ◽  
Author(s):  
E. F. Vedrova ◽  
L. V. Mukhortova ◽  
O. V. Trefilova

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