Short-term effects of hardened wood ash and nitrogen fertilisation in a Norway spruce forest on soil solution chemistry and humus chemistry studied with different extraction methods

Clarke, Nicholas; Økland, Tonje; Hanssen, Kjersti; Nordbakken, Jørn‐Frode; Wasak, Katarzyna

doi:10.1080/02827581.2017.1337921

Cited by 10 publications

(8 citation statements)

References 32 publications

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“…This may be due to shadowing impact of other stand parameters on age effect on litterfall. Therefore, stand growth (m 3 ha −1 ), which is the main influential factor on litterfall (Clarke et al, 2018) is under the control of substantially crown closure, growing stock and site index. Studies on the factors influencing the differences in the amounts of forest litter between or within tree species have shown that many factors could be responsible.…”

Section: Discussionmentioning

confidence: 99%

Farklı Yaşlardaki Kazdağı Göknar Meşçerelerinde (Abies nordmanniana subsp. equi-trojani (Steven) Spach) Toprak Organik Karbon ve Azot Stoklarındaki Değişimin Belirlenmesi

Savacı

Sarıyıldız

2020

Bartın Orman Fakültesi Dergisi

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Most of the carbon in forest ecosystems is stored in the forest litter and in the soil. Soil organic carbon (SOC) and total nitrogen (TN) stocks are, however, highly variable. Forest carbon stocks and fluxes vary with forest age, and relationships with forest age are often used to estimate fluxes for regional or national carbon inventories. Therefore, it is extremely important to determine the effect of stand age on SOC and TN stocks and the amount of tree species on the distribution. The objective of this study was to estimate SOC and TN stocks of Kazdağı fir (A. nordmanniana subsp. equi-trojani (Steven) Spach) in the northwest (Ilgaz) and northeast (Inebolu) of Kastamonu. Three sites of fir stand, aged 38, 57, 60, 66, 90, 100, 183, 250, 283 and 306 years were selected in pure fir forests. The results showed significant differences in the amounts of forest litter, SOC and TN stocks among the different stand ages. Kazdağı fir stands older than 100 years had much higher forest litter than the younger fir stands. The highest amount of forest litter was under the 306 years old fir stands (30.3 Mg ha-1) while the lowest amount of forest litter was under the 100 years old fir stands (3.95 Mg ha-1). When 0-30 cm soil depth was considered, the fir stands aged 100 and over generally showed higher SOC stocks than the fir stands younger than 100 years old, with the exception of 38 and 57 years old fir stands which had the highest SOC (166.7 Mg C ha-1). Similarly, for TN stocks, it was also seen that the fir stands aged 100 or over had higher TN stocks than the fir stands younger than 100 years old. Our results have indicated that the forest litter, SOC and TN stocks of fir stands are more dependent on stand age. Our results have indicated that the forest litter, SOC and TN stocks of fir stands are more dependent on stand age.

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Section: Discussionmentioning

confidence: 99%

Farklı Yaşlardaki Kazdağı Göknar Meşçerelerinde (Abies nordmanniana subsp. equi-trojani (Steven) Spach) Toprak Organik Karbon ve Azot Stoklarındaki Değişimin Belirlenmesi

Savacı

Sarıyıldız

2020

Bartın Orman Fakültesi Dergisi

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“…Studies have shown that nitrogen fertilisation leads to detectable short-term increases in soil solution N concentrations (Clarke et al 2018b ), and can also increase N concentrations in streams draining fertilised areas (Laudon et al 2011 ; Haugland et al 2015 ). The increased N can affect surface water acidification and studies have identified changes in aquatic plant community composition, with a shift towards more N tolerant species (Haugland et al 2015 ).…”

Section: Exploring the Impacts Of Intensified Forestry On Surface Watmentioning

confidence: 99%

“…However, given the high demand for N in most Nordic forest surface waters, water quality effects are hard to detect even a few hundred meters downstream of fertilised sites (Schelker et al 2016 ). Fertilisation with wood ash is currently not allowed in Norway (Regulation on Fertilisers of Organic Origin), but a field experiment has shown no clear short-term effects of wood ash spreading in forests on soil solution chemistry (Clarke et al 2018b ).…”

Section: Exploring the Impacts Of Intensified Forestry On Surface Watmentioning

confidence: 99%

Climate mitigation and intensified forest management in Norway: To what extent are surface waters safeguarded?

Sundnes

Karlsson

Platjouw

et al. 2020

Ambio

Self Cite

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While the role of forestry in mitigating climate change is increasingly subject to political commitment, other areas, such as water protection, may be at risk. In this study, we ask whether surface waters are sufficiently safeguarded in relation to the 2015 launch of a series of measures to intensify forest management for mitigation of climate change in Norway. First, we assess how impacts on water are accounted for in existing regulations for sustainable forestry. Secondly, we provide an overview of the impacts of forestry on water quality relevant to three support schemes: afforestation on new areas, increased stocking density in existing forests, and forest fertilisation. Lastly, we assess the uncertainties that exist with regard to surface waters in the implementation of these measures. We find that the safeguards in place are adequate to protect water resources at the point of initiation, but there is a large degree of uncertainty as to the long-term effect of these mitigation measures.

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“…Clearcutting reduces the stand level demand for N and can promote increased N leaching which can be observed for as much as ten years following clearcutting (Likens et al 1970;Kreutzweiser et al 2008;Futter et al 2014;Schelker et al 2016). Compared to conventional harvest (SOH) removal of felling residues (WTH) reduces the leaching of N after the clearcut and can thereby counteract N accumulation resulting from atmospheric deposition (Lundborg 1997;Clarke et al 2018). The magnitude and duration of N leaching is generally higher in more productive stands, and higher NO 3 leaching results in larger depletion of Ca in the soil pool.…”

Section: Stem-only Vs Whole-tree Harvestmentioning

confidence: 99%

“…The magnitude and duration of N leaching is generally higher in more productive stands, and higher NO 3 leaching results in larger depletion of Ca in the soil pool. In a field study of the effect of SOH vs. WTH in Norway, Clarke et al (2018) found that removal of needles and branches substantially reduced the leaching of N to soil water, presumably because there was less dead organic matter available for decomposition.…”

Section: Stem-only Vs Whole-tree Harvestmentioning

confidence: 99%

Intensified forestry as a climate mitigation measure alters surface water quality in low intensity managed forests

Valinia

Kaste

Wright

2020

Scandinavian Journal of Forest Research

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Short-term effects of hardened wood ash and nitrogen fertilisation in a Norway spruce forest on soil solution chemistry and humus chemistry studied with different extraction methods

Cited by 10 publications

References 32 publications

Farklı Yaşlardaki Kazdağı Göknar Meşçerelerinde (Abies nordmanniana subsp. equi-trojani (Steven) Spach) Toprak Organik Karbon ve Azot Stoklarındaki Değişimin Belirlenmesi

Farklı Yaşlardaki Kazdağı Göknar Meşçerelerinde (Abies nordmanniana subsp. equi-trojani (Steven) Spach) Toprak Organik Karbon ve Azot Stoklarındaki Değişimin Belirlenmesi

Climate mitigation and intensified forest management in Norway: To what extent are surface waters safeguarded?

Intensified forestry as a climate mitigation measure alters surface water quality in low intensity managed forests

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