Abstract
The aim of the study was to estimate how the deadwood of different tree species in various stages of decomposition affected nutrient dynamics. The deadwood of eight species (common alder, common aspen, common ash, silver fir, pedunculate oak, Norway spruce, common hornbeam and silver birch) was selected. Three logs from each species in the third, fourth and fifth decay classes were chosen for analysis. Wood in the third decay class was characterised by larger hard fragments, fragmented bark and no branches; in the fourth decay class, it was characterised by small pieces and a fragmented bark; and in the fifth decay class, it was characterised by a soft texture and no bark. The investigation was carried out in the Czarna Rózga Reserve in Central Poland. Tension lysimeters were installed under each log in the humus horizon. The water samples collected from tension lysimeters were chemically analysed in the laboratory. The water chemistry was analysed by means of ion chromatography using a DIONEX ICS 5000 unit. The leachate obtained from different tree species contained different ion concentrations. The high similarity of the concentration of total anions and statistically significant differences in the content of total cations were determined in the leachate from the wood of coniferous and deciduous species. The concentration of the cations increases with the advancement of the decomposition level. A general linear model analysis demonstrates that wood species and the decomposition classes are of equal importance in defining the ion composition of the filtrate leaching from deadwood. Wood at the highest decomposition stage releases more ions to the surface soil layers than wood at the lower decay class. An exception from the rule is the wood of birch, which in the III decay class releases more ions than in its higher decay classes. When comparing the ionic composition of leachate released from wood of coniferous and deciduous tree species, the latter are characterised by higher cation concentrations in comparison with coniferous species. Among the deciduous species, wood of such species as ash, hornbeam, aspen, birch and alder has the most favourable effects on the soil surface horizons through its supply with ionic substances. The ash wood releases high amounts of calcium, hornbeam wood releases magnesium and sodium, and aspen releases calcium, potassium and nitrate anion. From the analysed coniferous species, fir wood has a more favourable effect in terms of ion release to soil than spruce wood.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 13
Claim · model-written summary
Leachate from different tree species contained different ion concentrations.
Not reportedDirection
Verbatim
e0“The leachate obtained from different tree species contained different ion concentrations”
Claim · model-written summary
Total anion concentrations were highly similar between coniferous and deciduous wood leachates.
Verbatim
e0“The high similarity of the concentration of total anions and statistically significant differences in the content of total cations were determined in the leachate from the wood of coniferous and deciduous species”
Claim · model-written summary
Total cation content differed significantly between coniferous and deciduous wood leachates.
Not reportedDirection
Verbatim
e0“statistically significant differences in the content of total cations were determined in the leachate from the wood of coniferous and deciduous species”
Claim · model-written summary
Cation concentrations increased with decomposition level.
Verbatim
e0“The concentration of the cations increases with the advancement of the decomposition level”
t0“tree species”
Claim · model-written summary
Tree species and decomposition class contributed equally to filtrate ion composition.
Not reportedDirection
Verbatim
e0“wood species and the decomposition classes are of equal importance in defining the ion composition of the filtrate leaching from deadwood”
Claim · model-written summary
Wood at the highest decomposition stage released more ions to surface soil than lower decay wood.
Verbatim
e0“Wood at the highest decomposition stage releases more ions to the surface soil layers than wood at the lower decay class”
t0“tree species”
Claim · model-written summary
Birch wood released more ions in decay class III than in higher decay classes.
Verbatim
e0“wood of birch, which in the III decay class releases more ions than in its higher decay classes”
Claim · model-written summary
Deciduous wood leachate had higher cation concentrations than coniferous wood leachate.
Verbatim
e0“the latter are characterised by higher cation concentrations in comparison with coniferous species”
e1“coniferous and deciduous tree species”
Claim · model-written summary
Ash, hornbeam, aspen, birch and alder wood had favorable effects on surface soil through ionic supply.
- Taxon
- ash, hornbeam, aspen, birch and aldere0
- Outcome
- most favourable effects on the soil surface horizonse0
Not reportedDirection
Verbatim
e0“wood of such species as ash, hornbeam, aspen, birch and alder has the most favourable effects on the soil surface horizons through its supply with ionic substances”
Claim · model-written summary
Ash wood released high amounts of calcium.
Verbatim
e0“The ash wood releases high amounts of calcium”
Claim · model-written summary
Hornbeam wood released magnesium and sodium.
Verbatim
e0“hornbeam wood releases magnesium and sodium”
Claim · model-written summary
Aspen wood released calcium, potassium and nitrate anion.
Verbatim
e0“aspen releases calcium, potassium and nitrate anion”
Claim · model-written summary
Fir wood released ions to soil more favorably than spruce wood.
Verbatim
e0“fir wood has a more favourable effect in terms of ion release to soil than spruce wood”