Carbon Dynamics of Larch Plantations in Northeastern China and Japan

Jomura, Mayuko; Wang, W. J.; Masyagina, Oxana V.; Homma, Shoko; Kanazawa, Yoichi; Zu, Yuan Gang; Koike, Takao

doi:10.1007/978-1-4020-9693-8_20

Cited by 4 publications

(5 citation statements)

References 49 publications

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“…The share of components on the aboveground biomass varies across species [61,62]. The results in this study showed that wood biomass had the largest contribution to aboveground biomass, and tree stem (wood plus bark) contributed for approximately 80%, whereas leaf represented the smallest portion, which is consistent with several published studies related to larch [50,63]. As the trees grow larger, the relative contribution of the stem and branch to the aboveground biomass increases, while that of leaf and bark decreases.…”

Section: Discussionsupporting

confidence: 91%

Aboveground Biomass Allocation and Additive Allometric Models for Natural Larix gmelinii in the Western Daxing’anling Mountains, Northeastern China

Meng

Jia

Liu

et al. 2019

Forests

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Accurate estimates of tree component and aboveground biomass strongly depend on robust and precise allometric equations. However, site-specific and suitable biomass equations are currently scarce for natural Larix gmelinii forests in the western Daxing’anling Mountains, northeastern China. This study aimed to evaluate the biomass allocation patterns within tree components and develop additive allometric biomass equations for species of L. gmelinii. A total of 58 trees were destructively sampled and measured for wood (inside bark), bark, branch and leaf biomass. For each component, we assessed the share of biomass allocated to different components by computing its ratio; we also tested two allometric equations based on diameter at breast height (dbh) alone, and dbh fitted with height (h) as independent variables. Seemingly unrelated regression methodology was used to fit an additive system of biomass allometric equations. We performed an independent dataset to evaluate the predictive ability of the best model system. The results revealed that wood biomass accounted for approximately 60% of the aboveground biomass. Wood and branch biomass ratios increased with increasing dbh, while a reverse trend was observed for bark and leaf biomass ratios. All models showed good fitting results with Adj.R2 = 0.958–0.995. Tree dbh provided the lowest estimation errors in the regressions associated with branches and leaves, while dbh2 × h generated the most precise models for stems (wood and bark). We conclude that these allometric equations will accurately predict biomass for Larix trees in the western Daxing’anling Mountains.

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Section: Discussionsupporting

confidence: 91%

Aboveground Biomass Allocation and Additive Allometric Models for Natural Larix gmelinii in the Western Daxing’anling Mountains, Northeastern China

Meng

Jia

Liu

et al. 2019

Forests

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“…This strongly indicates that the species allocates more biomass to root in colder sites, namely, the root-shoot ratio increases latitudinally [37]. In addition, the root-shoot ratio is an important factor for estimating belowground biomass when biomass models are not available [38].…”

Section: Discussionmentioning

confidence: 99%

Fine Root Biomass and Its Relationship with Aboveground Traits of Larix gmelinii Trees in Northeastern China

Meng

Jia

Zhou

et al. 2018

Forests

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Fine roots play a prominent role in forest carbon flux, nutrient and water acquisition; however, information on fine roots remains scarce due to the limitation of measuring methods. In this study, a nested regression method was used to estimate the biomass and surface area of fine roots of individual Larix gmelinii trees that dominate northernmost China. Aboveground traits including leaf biomass, leaf area, stem volume and aboveground biomass were also investigated. In particular, the relationships between leaves and fine roots, in terms of biomass and area, were examined. The results revealed that allometric models of fine roots, total roots, and leaves consistently fit well with Adj. R 2 = 0.92-0.97. The root-shoot ratio at the individual tree level was approximately 0.28. There were robust positive linear correlations between absorption (fine root biomass, fine root surface area) and production (leaf biomass, leaf area) (Adj. R 2 = 0.95, p < 0.001). In conclusion, the close coupling between fine roots and leaves presented in this study provides support for the theory of functional equilibrium.

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“…Similar maximal values of photosynthetic rates for Larix gmelinii have been reported from Eastern Siberia (2.7-10.1 μmol CO 2 m −2 s −1 by Vygodskaya et al [82] and ca. 11.3 μmol CO 2 m −2 s −1 by Korzukhin et al [83]), Central Siberia (7.5-11 μmol CO 2 m −2 s −1 [50]), and China (8-11 μmol CO 2 m −2 s −1 [74]).…”

Section: Co 2 Exchange Of Larch Trees In Permafrost Habitatsmentioning

confidence: 97%

“…One of the topics will be described in this section to understand functional traits of larch in permafrost habitats (limited precipitation but rich in water via permafrost) in a continental climate, for example, Siberia (Russia): needle CO 2 assimilation, respiration, and intra-tree carbon transfer using 13 C labeling of mature larch trees. In China, the ecophysiological study is very limited but most studies were oriented CO 2 flux monitoring to contribute CO 2 balance in the atmosphere [74] but the acute estimation of non-photosynthetic organs [75] and soil respiration under different land-use [56]. Here we mainly focus on the ecophysiology of central Siberia studies.…”

Section: Russia and Chinamentioning

confidence: 99%

Larch: A Promising Deciduous Conifer as an Eco-Environmental Resource

Qu¹,

Wang²,

Masyagina³

et al. 2022

Conifers - Recent Advances

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Larch species are widely distributed in the northern hemisphere where permafrost and seasonal frozen soil exist. This species with heterophyllous shoots has been intensively planted in northeast Asia as well as in northeast China as the principal afforestation species for restoring agricultural lands to forests from 1999. Although approximately 15 species exist in the northern hemisphere and they are easy to hybridize. Among them, Japanese larch grows the fastest and was exported to Europe as a breeding species from early 20s. Although Japanese larch is tolerant to cold, it suffered from various biological stresses. After nearly 40 years of vigorous breeding effort, hybrid larch F1 (Dahurian larch × Japanese one) was developed with simple propagation methods. With the use of free-air CO2 enriched (FACE) systems, we revealed growth responses of the F1 and its parent larches to environmental conditions. From experiments, F1 showed high responses to elevated CO2 and O3 but not so much to N loading. As future perspectives for larch plantations as an important eco-environmental resource, we expect to afforest F1 seedlings infected with ectomycorrhizae (e.g., Suillus sp.) for efficient afforestation at nutrient-poor sites and at the same time for the production of delicious mushrooms.

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Carbon Dynamics of Larch Plantations in Northeastern China and Japan

Cited by 4 publications

References 49 publications

Aboveground Biomass Allocation and Additive Allometric Models for Natural Larix gmelinii in the Western Daxing’anling Mountains, Northeastern China

Aboveground Biomass Allocation and Additive Allometric Models for Natural Larix gmelinii in the Western Daxing’anling Mountains, Northeastern China

Fine Root Biomass and Its Relationship with Aboveground Traits of Larix gmelinii Trees in Northeastern China

Larch: A Promising Deciduous Conifer as an Eco-Environmental Resource

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