The effects of urea fertilization on carbon sequestration in Douglas-fir plantations of the coastal Pacific Northwest

Shryock, Benjamin; Littke, K.M.; Ciol, Márcia A.; Briggs, David; Harrison, Robert

doi:10.1016/j.foreco.2014.01.040

Cited by 10 publications

(7 citation statements)

References 49 publications

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“…Much of the potential carbon storage lost by thinning (removal of coniferous trees) was restored in the heavily thinned stands at 25 years post-thinning. Fertilization did increase (1.4 times) carbon storage significantly among total crop trees and total conifers and this response fit the predictions of several studies [40,69,71,72]. Indeed, [73] and [35] indicated that fertilization was one of the best methods of forest management to increase carbon sequestration.…”

Section: Stand-level Carbon Storagesupporting

confidence: 81%

“…Incremental silviculture treatments may enhance carbon sequestration, as well as contribute to resilience of managed stands to the potentially difficult growing conditions predicted as a result of climate change [40,41,61]. In a global overview, [6] discussed the risk of drought and heat-induced mortality for the world's forests from climate change.…”

Section: Stand Thinning and Ecosystem Servicesmentioning

confidence: 99%

“…Increasing the productivity of forest stands, stand thinning and fertilization also have the potential to accelerate carbon sequestration as an ecosystem service [39][40][41]. Another major addition to calculations of carbon storage in coniferous trees involves the response of crowns of crop trees to thinning and fertilization.…”

Section: Introductionmentioning

confidence: 99%

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Twenty-Five Years after Stand Thinning and Repeated Fertilization in Lodgepole Pine Forest: Implications for Tree Growth, Stand Structure, and Carbon Sequestration

Sullivan

Sullivan²,

Lindgren³

et al. 2020

Forests

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Silvicultural practices such as pre-commercial thinning (PCT) and repeated fertilization have been used successfully around the world to increase forest biomass for conventional wood products, biofuels, and carbon sequestration. Two complementary studies were designed to test the hypotheses (H) that large-scale PCT and PCT with repeated fertilization of young (13-17 years old) lodgepole pine (Pinus contorta var. latifolia) stands, at 25 years after the onset of treatments, would enhance (H 1 ) productivity and structural features (diameter and height growth, crown volume and dimensions) of crop trees; (H 2 ) merchantable volume of crop trees, (H 3 ) abundance of understory conifer, herb and shrub layers, and (H 4 ) carbon storage (sequestration) of all layers. Results are from two studies in south-central British Columbia, Canada. The PCT study had three densities: 500, 1000, and 2000 stems/ha, an unthinned, and old-growth stand replicated at three areas. The PCT-FERT study had four densities: 250, 500, 1000, and 2000 stems/ha with and without a repeated fertilization treatment, and an unthinned-unfertilized stand, replicated at two areas. Heavily thinned (≤1000 stems/ha) and fertilized stands generally had larger mean diameters and crown dimensions than lightly thinned or unfertilized stands, whereas mean heights of crop trees remained relatively unaffected, and hence partial support for H 1 . Despite differences in stand density (4-and 8-fold) of original crop trees, ingress of intermediate crop trees over the 25 years changed density dramatically. There was no support for H 2 , as mean merchantable volume of total crop trees was similar across stand densities owing to ingress, and was also similar in fertilized and unfertilized stands. In stands thinned to ≤500 trees/ha, there is an anticipated increase in crop tree density of 2.2 to 4.3 times over 25 years compared with the original post-thinning densities. Mean abundance of understory conifers was generally similar among stands owing to successional development towards canopy closure, whereas herbs and shrubs persisted only in canopy gaps in heavily thinned stands, thereby providing no support for H 3 . Mean carbon storage was similar across densities in both studies with ingress contributing a considerable amount to carbon sequestration at the lower densities. Fertilization increased (1.4 times) mean carbon storage significantly among total crop trees, total conifers, and the grand total of all layers, thereby providing partial support for H 4 . Thus, much of the potential above-ground carbon storage lost by thinning was restored in the heavily thinned stands at 25 years post-treatment.Forests 2020, 11, 337 2 of 23Forests 2020, 11, 337 3 of 23 Materials and Methods Experimental Design and Study AreasData from two separate long-term studies with 25-year datasets in naturally regenerated post-harvest lodgepole pine stands were used to test our study hypotheses: (1) PCT only (1988PCT only ( -2013 and (2) PCT with fertilization (PCT+FERT) . The PCT study was lo...

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Section: Stand-level Carbon Storagesupporting

confidence: 81%

Section: Stand Thinning and Ecosystem Servicesmentioning

confidence: 99%

See 1 more Smart Citation

Twenty-Five Years after Stand Thinning and Repeated Fertilization in Lodgepole Pine Forest: Implications for Tree Growth, Stand Structure, and Carbon Sequestration

Sullivan

Sullivan²,

Lindgren³

et al. 2020

Forests

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“…If tree mortality is not included, this can distort results. For example, Shryock, Littke, Ciol, Briggs, and Harrison () found that while N fertilization led to a significant increase in the tree C pool (10% increase on average), it did not lead to a significant increase in tree C sequestration at stand level because mortality was higher in fertilized trees. Shen, Moore, and Hatch () also found that mortality in Douglas fir was about 1.4 and 2.1 times higher in stands fertilized with 224 and 448 kg N ha −1 yr −1 , respectively, than in unfertilized plots.…”

Section: Discussionmentioning

confidence: 99%

Global‐scale impacts of nitrogen deposition on tree carbon sequestration in tropical, temperate, and boreal forests: A meta‐analysis

Schulte-Uebbing

Vries

2017

Global Change Biology

232

145

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Elevated nitrogen (N) deposition may increase net primary productivity in N-limited terrestrial ecosystems and thus enhance the terrestrial carbon (C) sink. To assess the magnitude of this N-induced C sink, we performed a meta-analysis on data from forest fertilization experiments to estimate N-induced C sequestration in aboveground tree woody biomass, a stable C pool with long turnover times. Our results show that boreal and temperate forests responded strongly to N addition and sequestered on average an additional 14 and 13 kg C per kg N in aboveground woody biomass, respectively. Tropical forests, however, did not respond significantly to N addition. The common hypothesis that tropical forests do not respond to N because they are phosphorus-limited could not be confirmed, as we found no significant response to phosphorus addition in tropical forests. Across climate zones, we found that young forests responded more strongly to N addition, which is important as many previous meta-analyses of N addition experiments rely heavily on data from experiments on seedlings and young trees. Furthermore, the C-N response (defined as additional mass unit of C sequestered per additional mass unit of N addition) was affected by forest productivity, experimental N addition rate, and rate of ambient N deposition. The estimated C-N responses from our meta-analysis were generally lower that those derived with stoichiometric scaling, dynamic global vegetation models, and forest growth inventories along N deposition gradients. We estimated N-induced global C sequestration in tree aboveground woody biomass by multiplying the C-N responses obtained from the meta-analysis with N deposition estimates per biome. We thus derived an N-induced global C sink of about 177 (112-243) Tg C/year in aboveground and belowground woody biomass, which would account for about 12% of the forest biomass C sink (1,400 Tg C/year).

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“…La fertilización con nitrógeno tiene la capacidad de alterar, significativamente, el ambiente edáfico forestal y puede incrementar el almacenamiento de carbono (Smaill et al, 2008). Shryock et al (2014) citan que la fertilización con nitrógeno aumentó significativamente el carbono secuestrado por árbol, con respecto a las parcelas que no se fertilizaron.…”

Section: Resultado Y Discusiónunclassified

Influencia de la fertilización mineral sobre la retención de carbono en una plantación de pino

Pozo¹,

Sánchez

Echeverría³

2019

RMCF

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Con el objetivo de estimar el efecto que ejerce la fertilización mineral sobre la retención de carbono aplicada de forma fraccionada en los primeros cinco años de establecida la plantación el trabajo consistió en la evaluación de 288 árboles de diferentes edades durante los primeros 41 años de edad en una plantación de Pinus caribaea, establecida en la Estación Experimental Forestal de Viñales en Pinar del Río, Cuba. A partir de un diseño de bloques al azar, se establecieron siete tratamientos diferenciados por las dosis de NPK y regímenes de aplicación, más un tratamiento testigo sin la aplicación de fertilizante químico. Se realizaron mediciones de altura y diámetro y se calculó el volumen a diferentes edades. El análisis evidenció que las dosis de 600 g árbol-1, 800 g árbol-1 y 1 000 g árbol-1 favorecen la retención de carbono de P. caribaea. Con la aplicación de una dosis única de 300 g árbol-1 se obtienen valores inferiores a los del tratamiento testigo.

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The effects of urea fertilization on carbon sequestration in Douglas-fir plantations of the coastal Pacific Northwest

Cited by 10 publications

References 49 publications

Twenty-Five Years after Stand Thinning and Repeated Fertilization in Lodgepole Pine Forest: Implications for Tree Growth, Stand Structure, and Carbon Sequestration

Twenty-Five Years after Stand Thinning and Repeated Fertilization in Lodgepole Pine Forest: Implications for Tree Growth, Stand Structure, and Carbon Sequestration

Global‐scale impacts of nitrogen deposition on tree carbon sequestration in tropical, temperate, and boreal forests: A meta‐analysis

Influencia de la fertilización mineral sobre la retención de carbono en una plantación de pino

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