Accumulation and release of plant nutrients in decomposing Scots pine needle litter. Long-term decomposition in a Scots pine forest II

1982 ◽  
Vol 60 (8) ◽  
pp. 1561-1568 ◽  
Author(s):  
Håkan Staaf ◽  
Björn Berg
Keyword(s):  
Weight Loss ◽  
Scots Pine ◽  
Nutrient Dynamics ◽  
Pine Forest ◽  
Plant Nutrient ◽  
Pine Needle ◽  
Needle Litter ◽  
Scots Pine Forest ◽  
Net Release

Plant nutrient dynamics in decomposing needle litter were measured during a 5-year period in a Scots pine forest in central Sweden. As seen over the whole 5-year period, the nutrients were retained (to a litter weight loss of about 75%) in the order Mn < Ca < K < Mg < S < N < P. During the first 1.5 years there was a net increase of N and P whereafter a net release took place. A similar but less pronounced development could be seen for S, whereas Ca, K, Mn, and Mg were released from the start of the incubation. It is suggested that P was the most limiting element for microbial activity during this first phase. There appeared to be only little initial leaching from the litter and the different behaviours of the elements could largely be explained by their concentration in litter in relation to the needs of microorganisms and to their solubility. K and Mg were the elements that were released at rates most similar to organic matter weight loss.

scholarly journals Plasticity of Fine-Root Traits Under Long-Term Irrigation of a Water-Limited Scots Pine Forest

2019 ◽  
Vol 10 ◽  
Author(s):  
Ivano Brunner ◽  
Claude Herzog ◽  
Lucía Galiano ◽  
Arthur Gessler
Keyword(s):  
Scots Pine ◽  
Fine Root ◽  
Root Traits ◽  
Pine Forest ◽  
Scots Pine Forest

Lignin and holocellulose relations during long-term decomposition of some forest litters. Long-term decomposition in a Scots pine forest. IV

1984 ◽  
Vol 62 (12) ◽  
pp. 2540-2550 ◽  
Author(s):  
Bjorn Berg ◽  
Gunnar Ekbohm ◽  
Charles McClaugherty
Keyword(s):  
United States ◽  
Scots Pine ◽  
Field Experiments ◽  
The United States ◽  
Pine Forest ◽  
Chemical Components ◽  
Asymptotic Value ◽  
Asymptotic Values ◽  
Scots Pine Forest

We investigated the relative changes in celluloses and lignin during decomposition of leaf and needle litters and wood in field experiments. The litter came from two different forest systems: one in the United States and one in Sweden. We found that the fraction of holocellulose in the total lignocellulose (Q) during decomposition approached an asymptotic value at which the disappearance of both the chemical components proceeded at the same rate. Different litter types approached different asymptotic values of Q. Possible implications of the finding are discussed.

scholarly journals Lessons learned from a long‐term irrigation experiment in a dry Scots pine forest: Impacts on traits and functioning

2022 ◽  
Author(s):  
Arun K. Bose ◽  
Andreas Rigling ◽  
Arthur Gessler ◽  
Frank Hagedorn ◽  
Ivano Brunner ◽  
...  
Keyword(s):  
Scots Pine ◽  
Pine Forest ◽  
Lessons Learned ◽  
Scots Pine Forest

Changes in organic chemical components of needle litter during decomposition. Long-term decomposition in a Scots pine forest. I

1982 ◽  
Vol 60 (8) ◽  
pp. 1310-1319 ◽  
Author(s):  
Björn Berg ◽  
Kai Hannus ◽  
Thomas Popoff ◽  
Olof Theander
Keyword(s):  
Scots Pine ◽  
Chemical Components ◽  
Organic Chemical ◽  
Pinus Silvestris ◽  
Steryl Esters ◽  
Needle Litter ◽  
Field Incubation ◽  
Scots Pine Forest ◽  
Soluble Components

The decomposition and organic chemical changes in Scots pine (Pinus silvestris) needle litter were studied for a period of 5 years and until 75% weight loss was reached in field incubation. The changes in components such as various groups of lipophilic extractives, low-molecular carbohydrates, cyclitols, phenolic glycosides, polysaccarides, and lignin were followed. There was a great drop of sugars, steryl esters, and triglycerides during the 1st year of decomposition. Some isoprenoid alcohols, sterols, and some acids belonged to the most stable of the soluble components. Of the solid residue the arabinans decomposed rapidly, the cellulose decomposed somewhat faster than the hemicelluloses as a group, and the lignin decomposed rather slowly (about 48% in 5 years).

Temporal variation of litter decomposition in relation to simulated soil climate. Long-term decomposition in a Scots pine forest. V

1985 ◽  
Vol 63 (6) ◽  
pp. 1008-1016 ◽  
Author(s):  
P.-E. Jansson ◽  
B. Berg
Keyword(s):  
Temporal Variation ◽  
Soil Water ◽  
Scots Pine ◽  
Climatic Factors ◽  
Time Lag ◽  
Pine Forest ◽  
Soil Water Tension ◽  
Needle Litter ◽  
Scots Pine Forest ◽  
Soil Climate

Decomposition of Scots pine needle litter was studied in a Scots pine forest in central Sweden. A 6-year series with annual incubations of needle litter was used to analyse the climatic influence on the process. The original litter was of similar chemical properties between years and each year new litter was incubated, in the same way, in the autumn. Sampling took place at time intervals ranging from 1 month to 1 year. Soil climate variables such as temperature and water contents and tensions were calculated with a soil water and heat model from standard meteorological data. Decomposition rates from periods longer than 145 days were correlated with different soil climatic factors. The responses for the 1st and 2nd incubation years were not significantly different, but higher coefficients of determination (r2) were found for the 2nd year. Estimated actual evapotranspiration or soil temperature explained temporal variation of decomposition to about 70%; soil water content only or soil water tension only explained 90%. When moisture and temperature were combined, 95 and 99% of the variation could be explained for the 1st and 2nd year, respectively. When time periods down to 1 month were included, very poor fits were found with the same climate response functions. However, the relationships were improved by an inertia function which indicated a time lag of 2–3 months between soil climate and the response in decomposition rate.

scholarly journals Which Selective Logging Intensity is Most Suitable for the Maintenance of Soil Properties and the Promotion of Natural Regeneration in Highly Continental Scots Pine Forests?–Results 19 Years after Harvest Operations in Mongolia

Forests ◽  
2019 ◽  
Vol 10 (2) ◽  
pp. 141 ◽  
Author(s):  
Gerelbaatar Sukhbaatar ◽  
Baatarbileg Nachin ◽  
Battulga Purevragchaa ◽  
Batsaikhan Ganbaatar ◽  
Khishigjargal Mookhor ◽  
...  
Keyword(s):  
Organic Matter ◽  
Soil Properties ◽  
Total Nitrogen ◽  
Scots Pine ◽  
Natural Regeneration ◽  
Pine Forest ◽  
Selective Logging ◽  
Forest Steppe ◽  
Scots Pine Forest

Scots pine (Pinus sylvestris L.) forests are one of the main vegetation types in the Asian forest-steppe zone. However, over-harvesting currently threatens the natural regeneration and sustainability of these forests. In this study, we examine the long-term effects of different logging intensities on soil properties and natural regeneration in a natural Scots pine forest in the West Khentii Mountains (Mongolia), 19 years after selective logging. Our experimental design included five treatments: clear cut (CC), treatments with high (HI), medium (MI), low (LI) intensities, and a reference parcel with no logging impact at all (RE). We described and quantified the harvest events and applied ANOVA and LMM modeling to analyze and explain the long-term impacts of the logging intensities on soil properties and natural regeneration. We found that logging has a significant negative influence on the physical and chemical properties of the soil because it increases soil compaction and reduces soil nutrients. The most critical impacts of logging were on soil bulk density, total porosity, organic matter, and total nitrogen and phosphorus. The LMM modeling showed that organic matter (OgM), total nitrogen (TN), available K (AK) and pH values are especially impacted by logging. Our study revealed that the values for all of these variables show a linear decrease with increasing selective logging intensity and have a level of significance of p < 0.05. Another finding of this study is that selective logging with low and medium intensities can promote natural regeneration of Scots pine to numbers above those of the reference site (RE). High intensity logging and clear-cuts, however, limit the regeneration of Scots pine, reduce overall seedling numbers (p < 0.05), and create conditions that are suitable only for the regeneration of deciduous tree species. This underlines the risk of Scots pine forest degradation, either by replacement by broad-leaf trees or by conversion into non-forest ecosystems.

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