The sensitivity of carbon sequestration to harvesting and climate conditions in a temperate cypress forest: Observations and modeling

Ueyama, Masahito; Kai, Atsushi; Ichii, Kazuhito; Hamotani, Ken; Kosugi, Yukio; Monji, Nobutaka

doi:10.1016/j.ecolmodel.2011.05.006

Cited by 26 publications

(17 citation statements)

References 62 publications

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“…The cross check was conducted with the estimation with other methods both for evapotranspiration (Kosugi and Katsuyama 2007;Matsumoto et al 2011) and for carbon budget . At this site, Ueyama et al (2011) also reported the similar NEE values measured with relaxed eddy accumulation (REA) method.…”

Section: Gap Filling Proceduressupporting

confidence: 65%

Determination of the gas exchange phenology in an evergreen coniferous forest from 7 years of eddy covariance flux data using an extended big‐leaf analysis

Kosugi

Takanashi

Ueyama

et al. 2013

Ecological Research

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We defined gas exchange phenology as the seasonality of the gas exchange characteristics of a forest canopy, and investigated how the gas exchange phenology could be directly detected from an eddy covariance (EC) dataset and its influence on the canopy fluxes within an evergreen Japanese cypress forest. For the detection of gas exchange phenology, we derived three bulk parameters of the extended big‐leaf model (Kosugi et al. ) inversely from EC flux data over a 7‐year period: surface conductance (gc), maximum rate of carboxylation of the “big leaf” (VCMAX), and intercellular CO2 concentration of the “big leaf” (CI). The relationship between gc and the vapor pressure deficit declined in winter and spring. The relationship between the daily ecosystem respiration and air temperature was greater in the spring than in the other seasons. The temperature dependence curve of VCMAX decreased substantially in the winter and was different from that of an evergreen broadleaved forest. A decrease in CI was occasionally coupled with the decrease in canopy gross primary production during April and August, indicating that stomatal closure was responsible for a decline in canopy photosynthesis. Gas exchange phenology should be quantified when understanding the determining factors of the seasonality of canopy fluxes at evergreen coniferous forests.

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Section: Gap Filling Proceduressupporting

confidence: 65%

Determination of the gas exchange phenology in an evergreen coniferous forest from 7 years of eddy covariance flux data using an extended big‐leaf analysis

Kosugi

Takanashi

Ueyama

et al. 2013

Ecological Research

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“…Grant et al (2007) also projected forest decline for mature jack pine forests under climate change in their simulations. However, many other studies have suggested that prolonged rotation lengths would enhance C sequestration (e.g., Liski et al, 2001;Ueyama et al, 2011). For example, longer rotation length (>90 years) in European boreal forests has been suggested to benefit C sequestration (Liski et al, 2001;Kaipainen et al, 2004).…”

Section: Implications For Forest Managementmentioning

confidence: 97%

“…For example, longer rotation length (>90 years) in European boreal forests has been suggested to benefit C sequestration (Liski et al, 2001;Kaipainen et al, 2004). Ueyama et al (2011) also suggested that a 140-year rotation with a harvesting intensity of 70% might sequester more C in a Japanese cypress (Chamaecyparis obtuse) forest. Such conflicting findings are probably because of variations in climate, soil type, and forest type.…”

Section: Implications For Forest Managementmentioning

confidence: 97%

Quantifying the effects of climate change and harvesting on carbon dynamics of boreal aspen and jack pine forests using the TRIPLEX-Management model

Wang

Peng

Kneeshaw

et al. 2012

Forest Ecology and Management

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“…For this reason, terrestrial ecosystem modeling is still considered as being in a developmental stage, and further studies are required to identify specific aspects for refinement or modification. With the current state of performance, it is often the case that models need to be calibrated by adjusting predefined parameters to achieve agreement with the observations (e.g., Chiesi et al 2007;Ichii et al 2010;Ueyama et al 2010Ueyama et al , 2011.…”

Section: Introductionmentioning

confidence: 99%

The role of carbon flux and biometric observations in constraining a terrestrial ecosystem model: a case study in disturbed forests in East Asia

Kondo

Ichii

Ueyama

et al. 2013

Ecological Research

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The process of confining unnecessary freedom is a step toward advanced ecosystem modeling. This study demonstrates the importance of carbon flux and biometric observation in constraining a terrestrial ecosystem model with a simple optimization scheme. At the selected sites from AsiaFlux network, a simultaneous optimization scheme for both carbon flux and biomass was compared with carbon flux‐oriented and biomass‐oriented optimization schemes using the Biome‐BGC model. The optimization scheme oriented to either carbon flux or biomass provided simulation results that were consistent with observations, but with reduced performance in unconstrained variables. The simultaneous optimization scheme yielded results that were consistent with observations for both carbon flux and biomass. By comparing long‐term projections simulated by three schemes, it was found that the optimization oriented only to carbon flux has limited performance because misrepresented biomass significantly affected a projection of carbon exchange through heterotrophic respiration. From these experiments, we found that (1) a process model like Biome‐BGC is capable of reproducing both carbon flux and biomass within acceptable proximity, (2) constraining biomass is importance not just because it is one of carbon cycle components, but also it significantly affects simulations of carbon flux. Thus, it is important to invest more effort to improve simulation of biomass as well as carbon flux.

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The sensitivity of carbon sequestration to harvesting and climate conditions in a temperate cypress forest: Observations and modeling

Cited by 26 publications

References 62 publications

Determination of the gas exchange phenology in an evergreen coniferous forest from 7 years of eddy covariance flux data using an extended big‐leaf analysis

Determination of the gas exchange phenology in an evergreen coniferous forest from 7 years of eddy covariance flux data using an extended big‐leaf analysis

Quantifying the effects of climate change and harvesting on carbon dynamics of boreal aspen and jack pine forests using the TRIPLEX-Management model

The role of carbon flux and biometric observations in constraining a terrestrial ecosystem model: a case study in disturbed forests in East Asia

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