Effects of tending practices on nutrient dynamics in a young stand of sugi (Cryptomeria japonica) and hinoki (Chamaecyparis obtusa)

Haibara, Kikuo; Aiba, Yoshinori

doi:10.1016/0378-1127(90)90139-3

Cited by 6 publications

(4 citation statements)

References 4 publications

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“…High precipitation and warm temperature during the growing season stimulate soil N mineralization and discharge of nitrate. Even in forests with high levels of N retention, stream water in Japanese forests does not show seasonal variation in nitrate concentration, and nitrate discharge is observed in the rainy season (Aiba et al 1985;Haibara and Aiba 1990;Mitchell et al 1997). …”

Section: Response In Japanese Forestsmentioning

confidence: 99%

“…Even below this threshold of N deposition, forests may have potential risk depending on forest age (e.g. Vitousek and Reiners 1975;Haibara and Aiba 1990), land-use history (e.g., Hansen 2007), vegetation composition . Promising management practice for forests with a high risk of N leaching includes selective harvesting, replanting, thinning, and fertilization of limiting nutrient (Fenn et al 1998).…”

Section: Forest Managementmentioning

confidence: 99%

“…It is well known that clear cutting in catchments induces a significant increase of nitrate concentration in stream water, due to cessation of plant N uptake and stimulation of N mineralization (Likens et al 1970). Nitrate loss after clear cutting lasts 3-5 years in European forests (Gundersen et al 2006), and 8-9 years in Japanese coniferous plantations (Haibara and Aiba 1990;Fukushima and Tokuchi 2008) before returning to the pre-cut level. Removal of Nr with minimum nitrate leaching is likely to be achieved by selective harvesting and thinning, although these practices may also induce nitrate leaching temporally.…”

Section: Forest Managementmentioning

confidence: 99%

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Ecological risks in anthropogenic disturbance of nitrogen cycles in natural terrestrial ecosystems

Fujimaki

Sakai

Kaneko

2009

Ecological Research

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Anthropogenic addition of reactive nitrogen (Nr) to the biosphere is increasing globally and some terrestrial ecosystems are suffering from a state of excess Nr for biological nitrogen (N) demand, termed N saturation. Here, we review the ecological risks in relation to N saturation and prospective responses to N saturation. Excess Nr increases the risks of local extinction of rare plant species, encouragement of exotic plant species, disturbance of nutrient balance in plant organs, and increase of herbivory in plant communities. On the ecosystem scale, excess bioavailable N induces forest decline, disturbance of nutrient cycling within ecosystems, depending on vegetation, soil, land-use, and N-loading history. These Nr risks will increase in the Asian region, where impacts of Nr in natural terrestrial ecosystems have been scarcely studied. Whether much of the terrestrial ecosystems on a global level are in the sate of N saturation or not is still controversial, but the potential risks of excess Nr seem to be increasing. The fundamental ways to mitigate Nr risks are to reduce Nr production, prevent Nr translocation, and promote conversion of Nr to N 2 . Temporal, but promising actions against ecological N risks may include management of forests and riparian zones, and carbon addition in grassland.

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Section: Response In Japanese Forestsmentioning

confidence: 99%

Section: Forest Managementmentioning

confidence: 99%

Section: Forest Managementmentioning

confidence: 99%

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Ecological risks in anthropogenic disturbance of nitrogen cycles in natural terrestrial ecosystems

Fujimaki

Sakai

Kaneko

2009

Ecological Research

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“…NO 3 Likens et al, 1969Martin et al, 1985Tiedemann et al, 1988Haibara and Aiba, 1990Swank et al, 2001 Katou et al, 1996Katou et al, 2004 1 1 Fe Al 1987Al 1993 Cl NO 3…”

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confidence: 99%

Retardation of Nitrogen Leaching by the NO3- Adsorption in the Subsoil in a Watershed of Old Japanese Cedar and Cypress Stands.

梨恵子¹,

浩人²,

喜久雄³

2007

J. Jpn. For. Soc.

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Volcanic ash soils contain appreciable quantities of anion adsorption capacity (AEC) due to the variable charge, and they adsorb anions by non-specific adsorption. To study the effect of this characteristic on the NO 3 dynamics in forest soil, the NO 3 adsorptiondesorption process by the A-horizon and the B-horizon soils that are under the influence of volcanic ash were determined by the batch and the column methods. The batch experiment indicated that the adsorbed NO 3 by the B-horizon soils increased with the additive KNO 3 concentration. This result revealed the characteristics of the anion adsorption due to the variable charge soils. The A-horizon soils adsorbed less amount of NO 3 than B-horizon soils. The NO 3 adsorption amounts were negatively correlated with the total C concentration in soils, suggesting the amount of positive charge in the soil was controlled by the organic matter. Meanwhile, the NO 3 adsorption amounts were negatively correlated with pH in the A-horizon soils. Therefore, the A-horizon soils have variable charge due to the presence of humic substances, which was different from the B-horizon in composition of the positive charge. From the column experiment, the NO 3 concentrations in soil water of the field before and after cutting, and the thickness of the B-horizon soil, the increment of NO 3 adsorption amounts in the subsoil after cutting was calculated to be approximately 60 kgN ha 1 . This value indicated that the subsoil temporarily retained large amounts of N decomposed and released from forest floor, which inhibited the rapid increase in the NO 3 concentration of stream water. When the soil columns filled with adsorbed NO 3 were combined with deionized water, the entire additive NO 3 was finally leached out from the columns. Therefore, it is expected that, while the increase in NO 3 leaching from the cutting watershed would be reduced, the period of the increase would be long. From the column experiment and field observation, SO 4 2 leaching is also expected to increase followed by NO 3 leaching, in the future.

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Nutrient management of forests under stress for improved health and increased productivity

Huettl

Hunter

1992

Fertilizer Research

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Effects of tending practices on nutrient dynamics in a young stand of sugi (Cryptomeria japonica) and hinoki (Chamaecyparis obtusa)

Cited by 6 publications

References 4 publications

Ecological risks in anthropogenic disturbance of nitrogen cycles in natural terrestrial ecosystems

Ecological risks in anthropogenic disturbance of nitrogen cycles in natural terrestrial ecosystems

Retardation of Nitrogen Leaching by the NO3- Adsorption in the Subsoil in a Watershed of Old Japanese Cedar and Cypress Stands.

Nutrient management of forests under stress for improved health and increased productivity

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