Carbon and nitrogen pools and fluxes above and below ground in spruce, pine and birch stands in southern Sweden

Hansson, Karna; Fröberg, Mats; Helmisaari, Heljä‐Sisko; Kleja, Dan Berggren; Olsson, Bengt A.; Olsson, Mats; Persson, Tryggve

doi:10.1016/j.foreco.2013.05.029

Cited by 66 publications

(51 citation statements)

References 43 publications

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“…Similar C accumulation in the studied chronosequent silver birch stands was also supported by similar litter production; total aboveground litter production (including the understorey) was of the same magnitude (1.7-1.8 t C ha À1 year À1 ), which is in good accordance with the results reported in Hansson et al (2013b). Total belowground litter production was similar in the pole and premature stands (including the second layer of spruce) (1.2 and 1.0 t C ha À1 year À1 ), being the highest in the middle-age-stand (1.9 t C ha À1 year À1 ).…”

Section: Carbon Budgets In Chronosequent Silver Birch Standssupporting

confidence: 90%

Carbon budgets in fertile silver birch (Betula pendula Roth) chronosequence stands

Varik

Kukumägi

Aosaar

et al. 2015

Ecological Engineering

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Section: Carbon Budgets In Chronosequent Silver Birch Standssupporting

confidence: 90%

Carbon budgets in fertile silver birch (Betula pendula Roth) chronosequence stands

Varik

Kukumägi

Aosaar

et al. 2015

Ecological Engineering

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“…Discussions about the pros and cons of tree species richness for soil nutrients and other ecosystem aspects date back to the early 19th century [25,26], when higher levels of soil N were found in forests with more tree species [27]. The decomposition rate of soil N has been found to be directly affected by tree species [28], which may result in the difference in the abundance of soil available N in different areas. Our findings for the soil available N content are consistent with these findings.…”

Section: Discussionmentioning

confidence: 99%

Soil Degradation and the Decline of Available Nitrogen and Phosphorus in Soils of the Main Forest Types in the Qinling Mountains of China

Zheng

Yuan

Zhang

et al. 2017

Forests

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Soil degradation has been reported worldwide. To better understand this degradation, we selected Pinus armandii and Quercus aliena var. acuteserrata forests, and a mixed forest of Q. aliena var. acuteserrata and P. armandii in the Qinling Mountains in China for our permanent plots and conducted three investigations over a 20-year period. We determined the amounts of available nitrogen (N) and phosphorus (P) in the soil to track the trajectory of soil quality and compared these with stand characteristics, topographic and climatic attributes to analyze the strength of each factor in influencing the available N and P in the soil. We found that the soil experienced a severe drop in quality, and that degradation is continuing. Temperature is the most critical factor controlling the soil available N, and species composition is the main factor regulating the soil available P. Given the huge gap in content and the increasing rate of nutrients loss, this reduction in soil quality will likely negatively affect ecosystem sustainability.

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“…The presence of soil fauna strongly enhances litter disappearance and decomposition (Hättenschwiler & Gasser, 2005;Jacob et al, 2009). Earthworm abundance is generally low under EGs (Chapman, Whitaker & Heal, 1988;Saetre, 1998;Reich et al, 2005;de Schrijver et al, 2012;Frouz et al, 2013;Hansson et al, 2013a), which is an additional limitation to litter decomposition. Earthworm abundance is generally low under EGs (Chapman, Whitaker & Heal, 1988;Saetre, 1998;Reich et al, 2005;de Schrijver et al, 2012;Frouz et al, 2013;Hansson et al, 2013a), which is an additional limitation to litter decomposition.…”

Section: (3) Decomposition Of Dead Organic Mattermentioning

confidence: 99%

Influences of evergreen gymnosperm and deciduous angiosperm tree species on the functioning of temperate and boreal forests

et al. 2014

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It has been recognized for a long time that the overstorey composition of a forest partly determines its biological and physical-chemical functioning. Here, we review evidence of the influence of evergreen gymnosperm (EG) tree species and deciduous angiosperm (DA) tree species on the water balance, physical-chemical soil properties and biogeochemical cycling of carbon and nutrients. We used scientific publications based on experimental designs where all species grew on the same parent material and initial soil, and were similar in stage of stand development, former land use and current management. We present the current state of the art, define knowledge gaps, and briefly discuss how selection of tree species can be used to mitigate pollution or enhance accumulation of stable organic carbon in the soil. The presence of EGs generally induces a lower rate of precipitation input into the soil than DAs, resulting in drier soil conditions and lower water discharge. Soil temperature is generally not different, or slightly lower, under an EG canopy compared to a DA canopy. Chemical properties, such as soil pH, can also be significantly modified by taxonomic groups of tree species. Biomass production is usually similar or lower in DA stands than in stands of EGs. Aboveground production of dead organic matter appears to be of the same order of magnitude between tree species groups growing on the same site. Some DAs induce more rapid decomposition of litter than EGs because of the chemical properties of their tissues, higher soil moisture and favourable conditions for earthworms. Forest floors consequently tend to be thicker in EG forests compared to DA forests. Many factors, such as litter lignin content, influence litter decomposition and it is difficult to identify specific litter-quality parameters that distinguish litter decomposition rates of EGs from DAs. Although it has been suggested that DAs can result in higher accumulation of soil carbon stocks, evidence from field studies does not show any obvious trend. Further research is required to clarify if accumulation of carbon in soils (i.e. forest floor + mineral soil) is different between the two types of trees. Production of belowground dead organic matter appears to be of similar magnitude in DA and EG forests, and root decomposition rate lower under EGs than DAs. However there are some discrepancies and still are insufficient data about belowground pools and processes that require further research. Relatively larger amounts of nutrients enter the soil-plant biogeochemical cycle under the influence of EGs than DAs, but recycling of nutrients appears to be slightly enhanced by DAs. Understanding the mechanisms underlying forest ecosystem functioning is essential to predicting the consequences of the expected tree species migration under global change. This knowledge can also be used as a mitigation tool regarding carbon sequestration or management of surface waters because the type of tree species affects forest growth, carbon, water and nutrient cycling.

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Carbon and nitrogen pools and fluxes above and below ground in spruce, pine and birch stands in southern Sweden

Cited by 66 publications

References 43 publications

Carbon budgets in fertile silver birch (Betula pendula Roth) chronosequence stands

Carbon budgets in fertile silver birch (Betula pendula Roth) chronosequence stands

Soil Degradation and the Decline of Available Nitrogen and Phosphorus in Soils of the Main Forest Types in the Qinling Mountains of China

Influences of evergreen gymnosperm and deciduous angiosperm tree species on the functioning of temperate and boreal forests

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