Journal Home > Volume 4 , Issue 2
Background

Forest fertilization offers a means to increase the production of renewable resources. Nitrogen is the most common fertilizer in boreal upland forests. There is plenty of research on the effect of nitrogen fertilization on volume growth, but less research on the optimal timing of fertilization and optimal management of fertilized stands.

Methods

This study used simulation and optimization to analyze the profitability of fertilization, optimal management of fertilized stands and the effects of fertilization on cash flows and timber yields. The management of 100 stands representing the most common growing sites of Scots pine and Norway spruce was optimized.

Results

Fertilization improved profitability in most of the analyzed stands. Profitability improved most in spruce stands growing on mesic site. Improving stem quality increased the economic benefit of fertilization. The timber yields of medium-aged conifer stands can be increased by almost 1 m3ha-1a-1 (15%) in sub-xeric pine and mesic spruce sites and about 0.5 m3ha-1a-1 (5%) in mesic pine and herb-rich spruce sites when the recommended nitrogen dose (150 kg ha-1) is applied once in 30 years.

Conclusions

Nitrogen fertilization of boreal conifer forest should be used mainly in spruce-dominated stands growing on medium sites. The gains are the highest in stands where the mean tree diameter is 16-20 cm and stand basal area is 14-20 m2ha-1.


menu
Abstract
Full text
Outline
About this article

Optimal nitrogen fertilization of boreal conifer forest

Show Author's information Timo Pukkala( )
University of Eastern Finland, PO Box 11180101 Joensuu, Finland

Abstract

Background

Forest fertilization offers a means to increase the production of renewable resources. Nitrogen is the most common fertilizer in boreal upland forests. There is plenty of research on the effect of nitrogen fertilization on volume growth, but less research on the optimal timing of fertilization and optimal management of fertilized stands.

Methods

This study used simulation and optimization to analyze the profitability of fertilization, optimal management of fertilized stands and the effects of fertilization on cash flows and timber yields. The management of 100 stands representing the most common growing sites of Scots pine and Norway spruce was optimized.

Results

Fertilization improved profitability in most of the analyzed stands. Profitability improved most in spruce stands growing on mesic site. Improving stem quality increased the economic benefit of fertilization. The timber yields of medium-aged conifer stands can be increased by almost 1 m3ha-1a-1 (15%) in sub-xeric pine and mesic spruce sites and about 0.5 m3ha-1a-1 (5%) in mesic pine and herb-rich spruce sites when the recommended nitrogen dose (150 kg ha-1) is applied once in 30 years.

Conclusions

Nitrogen fertilization of boreal conifer forest should be used mainly in spruce-dominated stands growing on medium sites. The gains are the highest in stands where the mean tree diameter is 16-20 cm and stand basal area is 14-20 m2ha-1.

Keywords: Optimal management, Forest fertilization, Response model

References(31)

Bahr A, Ellström M, Akselsson C, Ekblad A, Mikusinska A, Wallander H (2013) Growth of ctomycorrhizal fungal mycelium along a Norway spruce forest nitrogen deposition gradient and its effect on nitrogen leakage. Soil Biol Biochem 59:38-48

Bergh J, Nilsson U, Allen HL, Johansson U, Fahlvik N (2014) Long-term responses of Scots pine and Norway spruce stands in Sweden to repeated fertilization and thinning. Forest Ecol Manage 320:118-128

Brumme R, Beese F (1992) Effects of liming and nitrogen fertilization on emissions of CO2 and N2O from a temperate forest. J Geophys Res 97:851-858

Gundersen P, Schmidt IK, Raulund-Rasmussen K (2006) Leaching of nitrate from temperate forests - effects of air pollution and forest management. Environ Rev 14:1-57

Hedwall P-O, Gong P, Ingerslev M, Bergh J (2014) Fertilization in northern forests - biological, economic and environmental constraints and possibilities. Scand J Forest Res 29(4):301-311

Hökkä H, Repola J, Moilanen M (2012) Modelling volume growth response of young Scots pine (Pinus sylvetris) stands to N, P, and K fertilization in drained Peatland sites in Finland. Can J Forest Res 42:1359-1370

Hooke R, Jeeves TA (1961) "Direct search" solution of numerical and statistical problems. J ACM 8:212-229

Insam H, Palojärvi A (1995) Effects of forest fertilization on nitrogen leaching and soil microbial properties in the Northern calcareous Alps of Austria. Plan Soil 168-169:75-81

Issakainen J, Moilanen M (1998) Lannoituksen vaikutus puolukka- ja mustikkasatoihin ja marjojen ravinnepitoisuuksiin kangasmailla (Effects of fertilization on the yields and nutrient concentrations of blueberry and lingonberry on mineral soils). Folia For 3:379-391, In Finnish

Jin X, Pukkala T, Li F, Dong L (2017) Optimal management of Korean pine plantations in multifunctional forestry. J Forest Res (in print)https://doi.org/10.1007/s11676-017-0397-4
DOI

Khan SA, Mulvaney RL, Ellsworth TR, Boast CW (2007) The myth of nitrogen fertilization for soil carbon sequestration. J Env Qual 36:1821-1832

Kukkola M, Saramäki J (1983) Growth response in repeatedly fertilized pine and spruce stands on mineral soils. Commun Inst Forest Fenn 114:55

Kukkola M, Nöjd P (2000) Kangasmetsien lannoitusten tuottama kasvunlisäys Suomessa 1950-1998. Metsätieteen aikakauskirja 4/2000: 603-612

Laasasenaho J (1982) Taper curve and volume equations for pine spruce and birch. Commun Inst Forest Fenn 108:74

Malinen J, Kilpeläinen H, Piira T, Redsven V, Wall T, Nuutinen T (2007) Comparing model-based approaches with bucking simulation-based approach in the prediction of timber assortment recovery. Forestry 80(3):309-321

Mehtätalo L (2002) Valtakunnalliset puukohtaiset tukkivähennysmallit männylle, kuuselle, koivulle ja haavalle. Metsätieteen aikakauskirja 4(2002):575-591

Nilsen P (2001) Fertilization experiments on forest mineral soils: A review of the Norwegian results. Scand J Forest Res 16(6):541-554

Mulvaney RL, Khan SA, Ellsworth TR (2009) Synthetic nitrogen fertilizers deplete soil nitrogen: A global dilemma for sustainable cereal production. J Env Qual 38:2295-2314

Nohrstedt H-ö (2001) Response of coniferous forest ecosystems on mineral soils to nutrient additions: a review of Swedish experiences. Scand J Forest Res 6:555-573

Ohenoja E (1994) Forest fertilization and the fruiting body production of larger fungi. Effect of fertilization on forest ecosystem. Biol Res Rep 38:140-155

Pettersson F, Högbom L (2004) Long-term growth effects following forest nitrogen fertilization in Pinus sylvestris and Picea abies stands in Sweden. Scand J Forest Res 19:339-347

Pukkala T (2005) Metsikön tuottoarvon ennustemallit kivennäismaan männiköille, kuusikoille ja rauduskoivikoillle. Metsätieteen aikakauskirja 3(2005):311-322

Pukkala T, Lähde E, Laiho O (2013) Species interactions in the dynamics of even- and uneven-aged boreal forests. J Sustain Forest 32(4):371-403

Pukkala T, Lähde E, Laiho O (2014a) Optimizing any-aged management of mixed boreal under residual basal area constraints. J Forest Res 25(3): 627-636.

Pukkala T, Lähde E, Laiho O (2014b) Stand management optimization - the role of simplifications. Forest Ecosyst 1:3 (11 p)

Pukkala T (2015) Optimizing continuous cover management of boreal forest when timber prices and tree growth are stochastic. Forest Ecosyst 2(6):1-13

Pukkala T (2016) Plenterwald, Dauerwald, or clearcut? Forest Policy Econ 62:125-134

Ring E (1995) Nitrogen leaching before and after clear-felling on fertilised experimental plots in a Pinus sylvestris stand in central Sweden. Forest Ecol Manage 72(2-3):151-166

Rummukainen A, Alanne H, Mikkonen E (1995) Wood procurement in the pressure of change - resource evaluation model till year 2010. Acta Forest Fenn 248:1-98

Saarsalmi A, Mälkönen E (2001) Forest fertilization research in Finland: a literature review. Scand J Forest Res 16:514-535

Tahvonen O, Pukkala T, Laiho O, Lähde E, Niinimäki S (2010) Optimal management of uneven-aged Norway spruce stands. Forest Ecol Manage 260:106-115

Publication history
Copyright
Rights and permissions

Publication history

Received: 12 December 2016
Accepted: 14 March 2017
Published: 21 March 2017
Issue date: June 2017

Copyright

© The Author(s) 2017.

Rights and permissions

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Return