Effects of clear-cutting on nitrogen leaching and fine root dynamics in a cool-temperate forested watershed in northern Japan

Fukuzawa, Karibu; Shibata, Hideaki; Takagi, Kentaro; Nomura, Mutsumi; Kurima, Noriko; Fukazawa, Tatsuya; Satoh, Fuyuki; Sasa, Kaichiro

doi:10.1016/j.foreco.2006.01.001

Cited by 72 publications

(60 citation statements)

References 10 publications

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“…1) in northern Japan (Fukuzawa et al, 2006). In that study, an approximately 50 % decrease in fine root biomass due to understory vegetation cutting was found to induce an increase in the maximum nitrate concentration in stream water from 3 µmol L −1 to ca.…”

Section: U Tsunogai Et Al: Quantifying the Effects Of Clear-and Strmentioning

confidence: 78%

“…15 µmol L −1 and that in soil solution from 30 µmol L −1 to more than 100 µmol L −1 . These results implied that nitrogen uptake by the understory vegetation was important to preventing nitrogen leaching after tree-cutting, and that the decline of this nitrogen uptake by removal of understory vegetation led to marked nitrate leaching to stream water (Fukuzawa et al, 2006). However, the importance of atmospheric nitrate as the source of increased nitrate in the stream water has not been evaluated to date.…”

Section: U Tsunogai Et Al: Quantifying the Effects Of Clear-and Strmentioning

confidence: 99%

“…The study site has been described in detail by Fukazawa et al (2006) and Takagi et al (2009). Clear-cutting of trees and subsequent strip-cutting of understory vegetation were conducted in a cool-temperate forested watershed in the Teshio Experimental Forest of Hokkaido University in northern Japan ( Fig.…”

Section: Site Description and Managementmentioning

confidence: 99%

“…1) and net ecosystem production over the forest stands has been monitored as part of a project known as the Carbon Cycle and Larch Growth experiment (CC-LaG) (Takagi et al, 2009). Clear-cutting of trees surrounding the tower with an area of 13.7 ha was conducted from January to March 2003 (Takagi et al, 2009;Fukuzawa et al, 2006). Following clear-cutting, logs were transported outside of the basin, while Sasa spp.…”

Section: Site Description and Managementmentioning

confidence: 99%

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Quantifying the effects of clear-cutting and strip-cutting on nitrate dynamics in a forested watershed using triple oxygen isotopes as tracers

et al. 2014

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Abstract. Temporal variations in the stable isotopic compositions of nitrate dissolved in stream water eluted from a cool-temperate forested watershed (8 ha) were measured to quantify the biogeochemical effects of clear-cutting of trees and subsequent strip-cutting of the understory vegetation, dwarf bamboo (Sasa senanensis), with special emphasis on changes in the fate of atmospheric nitrate that had been deposited onto the watershed based on 17 O values of nitrate. A significant increase in stream nitrate concentration to 15 µmol L −1 in spring of 2004 was correlated with a significant increase in the 17 O values of nitrate. Additionally, the high 17 O values of +14.3 ‰ suggest that the direct drainage of atmospheric nitrate accounted for more than 50 % of total nitrate exported from the forested watershed peaking in spring. Similar increases in both concentrations and 17 O values were also found in spring of 2005. Conversely, low 17 O values less than +1.5 ‰ were observed in other seasons, regardless of increases in stream nitrate concentration, indicating that the majority of nitrate exported from the forested watershed during seasons other than spring was remineralized nitrate: those retained in the forested ecosystem as either organic N or ammonium and then been converted to nitrate via microbial nitrification.When compared with the values prior to strip-cutting, the annual export of atmospheric nitrate and remineralized nitrate increased more than 16-fold and fourfold, respectively, in 2004, and more than 13-fold and fivefold, respectively, in 2005. The understory vegetation (Sasa) was particularly important to enhancing biological consumption of atmospheric nitrate.

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Section: U Tsunogai Et Al: Quantifying the Effects Of Clear-and Strmentioning

confidence: 78%

Section: U Tsunogai Et Al: Quantifying the Effects Of Clear-and Strmentioning

confidence: 99%

Section: Site Description and Managementmentioning

confidence: 99%

Section: Site Description and Managementmentioning

confidence: 99%

See 2 more Smart Citations

Quantifying the effects of clear-cutting and strip-cutting on nitrate dynamics in a forested watershed using triple oxygen isotopes as tracers

et al. 2014

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“…That contrasts with clear-cutting and intensive site preparation, which have been shown to impair soil and retard the recovery of carbon accumulations over time [43]. In this study, we disregarded whether forest management influenced the quality of stream water, because a previous study showed that its influence is small, given the rich vegetation on the region's forest floor [44].…”

Section: Discussionmentioning

confidence: 99%

Structural Complexity and Ecosystem Functions in a Natural Mixed Forest under a Single-Tree Selection Silviculture

et al. 2017

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Abstract:The objective of forest management has become broader, and it is essential to harmonize timber production with conservation of the forest ecosystem. Selection cutting is recognized as a major alternative of clear-cutting, because it can maintain the complexity and heterogeneity of a natural forest; however, its long-term evaluations are limited. This study compared various attributes of stand structures, which are indicators of biodiversity and ecosystem carbon stock between managed and unmanaged blocks (12.6 ha area in total) in a natural mixed forest in Hokkaido, the northernmost island of Japan. We found that 30 years' implementation of single-tree selection did not affect the volume, size structure, species diversity nor spatial distribution of overstory trees in the managed stands. Also, the total carbon stock in the managed stands was almost equal to that of the unmanaged stands. In contrast, several structural attributes and indicator elements that are significant for biodiversity (such as large-diameter live trees, dead trees, cavities, epiphytic bryophytes, and some avian guilds) showed marked decrease in the managed stands. We conclude that it is required to leave these structures and elements to some extent for deriving the merit of the management as an alternative silvicultural regime in the region.

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Early snowmelt by an extreme warming event affects understory more than overstory trees in Japanese temperate forests

et al. 2022

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The occurrence of extreme warm events and early snowmelt is predicted to increase in high‐latitude ecosystems, even during periods of time when there is no coincident reduction in total precipitation. However, because extreme events like these occur unpredictably, little is known about how advancing snowmelt by a single extreme warm event, without a reduction in precipitation amount, influences overstory trees and understory vegetation simultaneously in an ecosystem. We conducted a warming experiment (four 20 × 20 m plots) in temperate forests of Japan to determine the effects of earlier snowmelt on both understory dwarf bamboo plants and overstory birch trees. Our experimental treatment advanced snowmelt by about 10 days and increased soil temperatures that were associated with increased rates of soil nitrogen (N) mineralization and nitrification. Furthermore, these changes led to lower C:N ratios of leaves together with the greater growth of understory bamboo vegetation, with no changes in leaf C:N or growth rates of overstory birch trees. Together, our results demonstrate that advancing snowmelt by an extreme warm event in temperate forests is likely to affect N cycling and will benefit understory vegetation without a commensurate change in overstory vegetation, likely due to the increase in available soil N. These results also demonstrate that with the projected increase in the frequency of extreme warm events and advanced snowmelt, understory vegetation is likely to benefit more than overstory trees in Japanese temperate forests with heavy snow.

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Effects of clear-cutting on nitrogen leaching and fine root dynamics in a cool-temperate forested watershed in northern Japan

Cited by 72 publications

References 10 publications

Quantifying the effects of clear-cutting and strip-cutting on nitrate dynamics in a forested watershed using triple oxygen isotopes as tracers

Quantifying the effects of clear-cutting and strip-cutting on nitrate dynamics in a forested watershed using triple oxygen isotopes as tracers

Structural Complexity and Ecosystem Functions in a Natural Mixed Forest under a Single-Tree Selection Silviculture

Early snowmelt by an extreme warming event affects understory more than overstory trees in Japanese temperate forests

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