Regional variation in rate of mass loss of Pinus sylvestris needle litter in Swedish pine forests as influenced by climate and litter quality

1986 ◽  
Vol 1 (1-4) ◽  
pp. 167-180 ◽  
Author(s):  
Vernon Meentemeyer ◽  
Björn Berg
Keyword(s):  
Pinus Sylvestris ◽  
Mass Loss ◽  
Regional Variation ◽  
Litter Quality ◽  
Pine Forests ◽  
Needle Litter

Litter mass loss rates in pine forests of Europe and Eastern United States: some relationships with climate and litter quality

1993 ◽  
Vol 20 (3) ◽  
pp. 127-159 ◽  
Author(s):  
B. Berg ◽  
M. P. Berg ◽  
P. Bottner ◽  
E. Box ◽  
A. Breymeyer ◽  
...  
Keyword(s):  
United States ◽  
Mass Loss ◽  
Litter Quality ◽  
Pine Forests ◽  
Eastern United States ◽  
Litter Mass ◽  
Litter Mass Loss ◽  
Loss Rates

scholarly journals Highly Productive Pine Forests in a Changing Climate

2021 ◽  
pp. 9-23
Author(s):  
Nina F. Kuznetsova ◽  
◽  
Elena S. Klushevskaya ◽  
Elena Yu. Amineva
Keyword(s):  
Pinus Sylvestris ◽  
Scots Pine ◽  
Genetic Material ◽  
Weather Conditions ◽  
Test Site ◽  
Pine Forests ◽  
Soil Drought ◽  
Forest Steppe ◽  
Changing Climate ◽  
Vital State

Forest steppe of the Central Chernozem Region (CCR) of Russia belongs to the zone of highly productive pine forests. In 2015, for the first time a partial destabilization of Scots pine (Pinus sylvestris L.) was recorded within the territory of the CCR. It affected the population, organism and cellular levels of Scots pine (Pinus sylvestris L.). The destabilization was caused by the 8-year heatwave of 2007–2014 followed by a sharp drop in the water table and four severe droughts (2007, 2010, 2012, and 2014). The analysis was carried out on two sites of pine forest plantations growing in the environmentally sound region: the Stupino test site (Voronezh region, typical plantation for the CCR) and the Usman site (Lipetsk region, lands with elevated groundwater level). The results of morphological, cytogenetic and biochemical studies of model trees of the Stupino test site during the following periods are presented: 4 optimal years in terms of weather conditions, 2014 drought year and 2015 destabilization year. It was found that prolonged hydrothermal stress resulted in the transition of pine from the basic equilibrium state to a slightly nonequilibrium state. The trigger mechanism for changing their vital state was a severe autumn soil drought in 2014, after which the plants became weakened right before winter. A decrease in cone bioproductivity by the traits of seed fullness and the total number of seeds per cone, a change in population sampling structure, an increase in the number of mitosis pathologies, and an increase in proline content in needles were observed despite optimal weather conditions in 2015. The recovery of species was studied for three subsequent optimal years on the example of the Stupino and Usman populations. Experimental data indicate that the processes of vital state normalization involve profound changes in metabolism and require certain energy expenditures. It took the Stupino population longer to return to the regional norm, which indicates a different depth of destabilization of the tree genetic material of the studied populations. For citation: Kuznetsova N.F., Klushevskaya E.S, Amineva E.Yu. Highly Productive Pine Forests in a Changing Climate. Lesnoy Zhurnal [Russian Forestry Journal], 2021, no. 6, pp. 9–23. DOI: 10.37482/0536-1036-2021-6-9-23

scholarly journals Discrimination of Scots pine forests in the Iberian Central System (Pinus sylvestris var. iberica, Pinaceae) by means of pollen analysis. Phytosociological considerations

Lazaroa ◽  
2013 ◽  
Vol 34 (1) ◽  
pp. 191-208 ◽  
Author(s):  
José Antonio López-Sáez ◽  
Daniel Sánchez-Mata ◽  
Francisca Alba-Sánchez ◽  
Daniel Abel-Schaad ◽  
Rosario G. Gavilán ◽  
...  
Keyword(s):  
Pinus Sylvestris ◽  
Scots Pine ◽  
Pollen Analysis ◽  
Pine Forests ◽  
Central System ◽  
Scots Pine Forests

Foliar litter position and decomposition in a fire-maintained longleaf pine – wiregrass ecosystem

2002 ◽  
Vol 32 (6) ◽  
pp. 928-941 ◽  
Author(s):  
Joseph J Hendricks ◽  
Carlos A Wilson ◽  
Lindsay R Boring
Keyword(s):  
Mass Loss ◽  
Longleaf Pine ◽  
Pinus Palustris ◽  
Soil Surface ◽  
Fire Regimes ◽  
Pine Forests ◽  
N Losses ◽  
Surface Mass ◽  
Decay Constants ◽  
P Immobilization

Foliar litter position and decomposition were assessed in longleaf pine (Pinus palustris Mill.) - wiregrass (Aristida beyrichiana Trin. & Rupr.) woodlands during a 3-year burn interval. Position assessments revealed 57.7 and 67.4% of foliar litter was elevated in wiregrass crowns 1 and 2 years, respectively, following burning. Decomposition assessments revealed soil-surface mass loss decay constants (range 0.097–0.282) similar to those measured in comparable pine forests. However, elevated longleaf pine and wiregrass litter exhibited decay constants (0.052 and 0.074, respectively) 50% lower than corresponding soil-surface rates and among the lowest values in the literature. With the exception of wiregrass, which did not exhibit an immobilization of the nutrients (N, P, Ca, K, and Mg) assessed, foliar litter exhibited either extensive P immobilization with minimal N immobilization or minimal, short-lived immobilization of N, P, or both N and P. The percentage of original N and P remaining after 3 years varied widely among the soil surface (N range 6.3–56.3%; P range 3.4–204.7%) and elevated (N range 76.8–94.9%; P range 52.0–99.2%) litter. These results suggest that fire regimes typically employed in longleaf pine – wiregrass woodlands may balance N losses via volatilization with P limitations via litter immobilization.

Knotwood as a window to the indirect measurement of the decay resistance of Scots pine heartwood

Holzforschung ◽  
2007 ◽  
Vol 61 (5) ◽  
pp. 600-604 ◽  
Author(s):  
Outi Karppanen ◽  
Martti Venäläinen ◽  
Anni M. Harju ◽  
Stefan Willför ◽  
Suvi Pietarinen ◽  
...  
Keyword(s):  
Pinus Sylvestris ◽  
Mass Loss ◽  
Scots Pine ◽  
Total Phenolics ◽  
Decay Resistance ◽  
Indirect Measurement ◽  
The Other ◽  
Extractive Content ◽  
Standing Trees ◽  
Further Development

Abstract There is wide variation in the extractive content and decay resistance of Scots pine (Pinus sylvestris L.) heartwood. The heartwood is not visible in standing trees and only poorly visible in timber. Therefore, it is difficult to identify extractive-rich trees, and consequently the most decay-resistant heartwood. On the other hand, knots are clearly visible in standing trees and timber. In the present paper we studied the possibility of measuring the decay resistance of Scots pine heartwood indirectly on the basis of the extractive concentration of knotwood. The material investigated consisted of 40 felled trees with a wide between-tree variation for extractive content and decay resistance of their heartwood. The extractive content of knotwood was found to be four- to five-fold higher than that of heartwood. Statistically significant correlations were found between the mass loss of heartwood and the concentrations of total phenolics and stilbenes in knotwood (r=-0.54, P<0.001 and r=-0.40, P=0.011, respectively), and for the concentration of total phenolics (r=0.42, P=0.008) and stilbenes (r=0.39, P=0.012) between heartwood and knotwood. We suggest further development of this technique in the context of rapid industrial screening of durable pine heartwood.

Effects of N Deposition Induced by Environmental Pollution on Litter Decomposition Rate of Cortex phellodendri chinensis in Shenyang City

2012 ◽  
Vol 518-523 ◽  
pp. 1913-1917
Author(s):  
Fang Qin Guo ◽  
Wei Chen
Keyword(s):  
Environmental Pollution ◽  
Mass Loss ◽  
Litter Decomposition ◽  
Environmental Conditions ◽  
Decomposition Rate ◽  
Litter Quality ◽  
N Deposition ◽  
Shenyang City ◽  
Litter Decomposition Rate ◽  
Cortex Phellodendri

The effects of N deposition induced by environmental pollution on litter decomposition rate in Shenyang city are analyzed by the reciprocal transplant experiment. By contrasting environments and intraspecific variations in Cortex Phellodendri Chinensis leaf litter quality on mass loss rates to investigate the effects of N deposition on mass loss rates in urban and suburb. The results showed that N deposition in urban significantly affected litter decomposition rate by affecting litter quality and environmental conditions. There was a faster decomposition rate when the environmental conditions or litter quality was affected by N deposition.

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