Contribution of understory species to total ecosystem aboveground and belowground biomass in temperate Pinus pinaster Ait. forests

Gonzalez, Maya; Augusto, Laurent; Gallet‐Budynek, Anne; Xue, Jianming; Yauschew-Raguenes, Nathalie; Guyon, Dominique; Trichet, Pierre; Delerue, Florian; Niollet, Sylvie; Andréasson, Frida; Achat, David L.; Bakker, Mark R.

doi:10.1016/j.foreco.2012.10.026

Cited by 67 publications

(36 citation statements)

References 63 publications

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“…Concerning the soil, roots were also credited as being a large carbon pool (Nadelhoffer & Raich 1992), representing between 20 to 40 % of the total carbon stocks in forest soils (Jackson et al 1997 Jackson et al 1997). The understorey was reported to represent between 1-7% on average of the total ecosystem aboveground biomass for temperate forests (Dupouey et al 2000, Peichl & Arain 2006, Gonzalez et al 2013. Under high light conditions due to low stand density or more canopy openings, understorey biomass would be expected to be higher (Sabo et al 2009, Ares et al 2010, as more light and more resources such as water and nutrients are available for understorey primary productivity (Gonzalez et al 2013).…”

Section: Iforest -Biogeosciences and Forestrymentioning

confidence: 99%

“…The understorey was reported to represent between 1-7% on average of the total ecosystem aboveground biomass for temperate forests (Dupouey et al 2000, Peichl & Arain 2006, Gonzalez et al 2013. Under high light conditions due to low stand density or more canopy openings, understorey biomass would be expected to be higher (Sabo et al 2009, Ares et al 2010, as more light and more resources such as water and nutrients are available for understorey primary productivity (Gonzalez et al 2013). For our cork oak stands, despite a low stand density and the presence of openings throughout the stands, the part of understorey vegetation in the total aboveground ecosystem biomass varied on average between only 0.4 to 2.3% of total stand aboveground biomass for stand densities over 200 stems ha -1 and below 100 stems ha -1 , respectively.…”

Section: Iforest -Biogeosciences and Forestrymentioning

confidence: 99%

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Carbon storage in degraded cork oak (Quercus suber) forests on flat lowlands in Morocco

Oubrahim¹,

Boulmane²,

Bakker³

et al. 2016

iForest

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The present study aims to quantify the carbon stored in a degraded cork oak (Quercus suber L.) ecosystem in the north west of Morocco, in view of potential management implications. To this end, carbon stocks were evaluated in the first 100 cm of the soil, the cork oak trees, and the understorey species (both above-and belowground). Results show that the total carbon stocks in the cork oak ecosystem ranges from 65 to 237 Mg ha -1 with a mean value of 121 Mg ha -1 . The first 100 cm of the soil (including the forest floor) represents the largest carbon pool (~51% of the total organic carbon) of the ecosystem. Tree biomass (above-and belowground tissues of cork oak) represents the second largest pool (47%), whereas the contribution of the understorey is less than 2%. Within the first 100 cm of the soil, over 87% of all the soil organic carbon is situated in the first 40 cm of the soil depth. The amount of carbon stored here ranges from 30 to 110 Mg ha -1 and these organic carbon stocks vary considerably with the stand basal area of the cork oak (R 2 = 0.82). In practice, the carbon stocks of the different pools considered are strongly correlated with the stand density of the cork oak stands. In the semi-arid forest ecosystems of our study, management prescriptions aiming at increasing the standing biomass of the cork oak should thus considerably contribute, both directly through tree biomass and indirectly through increased soil organic matter, to efficient carbon sequestration.

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Section: Iforest -Biogeosciences and Forestrymentioning

confidence: 99%

Section: Iforest -Biogeosciences and Forestrymentioning

confidence: 99%

Carbon storage in degraded cork oak (Quercus suber) forests on flat lowlands in Morocco

Oubrahim¹,

Boulmane²,

Bakker³

et al. 2016

iForest

View full text Add to dashboard Cite

show abstract

“…Many researchers have focused only on carbon sequestration by the tree [8,[10][11][12]; less is known about the carbon pool in understory vegetation. The understory is an important functional component of the forest ecosystem, especially in plantations; management practices for the understory affect the aboveground biomass and carbon pool [13,14].…”

Section: Introductionmentioning

confidence: 99%

“…Although it represents a small fraction of the C content of forest trees, fine-root growth accounts for approximately one-third of annual net primary production, indicating that a significant amount of assimilated C is allocated to these roots [6,18,19]. Roots are more effective pathways for building up soil organic carbon stocks than foliar litter [13,20]. Stand age and disturbances due to forest management can affect the mass of roots present in soil [21,22] and thus can have a large impact on the soil C balance.…”

Section: Introductionmentioning

confidence: 99%

Carbon Storage in a Eucalyptus Plantation Chronosequence in Southern China

Zeng

Peng

et al. 2015

Forests

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Patterns of carbon (C) allocation across different stages of stand development in Eucalyptus urophylla × E. grandis plantations are not well understood. In this study, we examined biomass and mineral soil C content in five development stages (1, 2, 3, 4-5, and 6-8 years old) of a Eucalyptus stand in southern China. The tree biomass C pool increased with stand age and showed a high annual rate of accumulation. Stems accounted for the highest proportion of biomass C sequestered. The C pool in mineral soil increased initially after afforestation and then declined gradually, with C density decreasing with soil depth. The upper 50 cm of soil contained the majority (57%-68%) of sequestered C. The other biomass components (shrubs, herbaceous plants, litter, and fine roots) accounted for <5% of the total ecosystem C pool. Total C pools in the Eucalyptus plantation ecosystem were 112.9, 172.5, 203.8, 161.1, in the five developmental stages, respectively, with most of the C sequestered below ground. We conclude that Eucalyptus plantations have considerable biomass C sequestration potential during stand development. OPEN ACCESSForests 2015, 6 1764

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“…Research is increasingly focussing on understory vegetation due to the central role of forest components located below the dominant trees (Gonzalez et al 2013). Consequently, capturing the spatial complexity of forest stands with high accuracy (conformity of measurements to true value) is widely recognized as a valuable asset , Liang et al 2016.…”

Section: Introductionmentioning

confidence: 99%

Simulating Various Terrestrial and Uav Lidar Scanning Configurations for Understory Forest Structure Modelling

Hämmerle

Lukač

Chen

et al. 2017

ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci.

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Commission II, WG II/10KEY WORDS: forest structure, understory, laser scanning simulation, full waveform, 3D point cloud analysis, field campaign planning ABSTRACT: Information about the 3D structure of understory vegetation is of high relevance in forestry research and management (e.g., for complete biomass estimations). However, it has been hardly investigated systematically with state-of-the-art methods such as static terrestrial laser scanning (TLS) or laser scanning from unmanned aerial vehicle platforms (ULS). A prominent challenge for scanning forests is posed by occlusion, calling for proper TLS scan position or ULS flight line configurations in order to achieve an accurate representation of understory vegetation. The aim of our study is to examine the effect of TLS or ULS scanning strategies on (1) the height of individual understory trees and (2) understory canopy height raster models. We simulate full-waveform TLS and ULS point clouds of a virtual forest plot captured from various combinations of max. 12 TLS scan positions or 3 ULS flight lines. The accuracy of the respective datasets is evaluated with reference values given by the virtually scanned 3D triangle mesh tree models. TLS tree height underestimations range up to 1.84 m (15.30% of tree height) for single TLS scan positions, but combining three scan positions reduces the underestimation to maximum 0.31 m (2.41%). Combining ULS flight lines also results in improved tree height representation, with a maximum underestimation of 0.24 m (2.15%). The presented simulation approach offers a complementary source of information for efficient planning of field campaigns aiming at understory vegetation modelling.

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Contribution of understory species to total ecosystem aboveground and belowground biomass in temperate Pinus pinaster Ait. forests

Cited by 67 publications

References 63 publications

Carbon storage in degraded cork oak (Quercus suber) forests on flat lowlands in Morocco

Carbon storage in degraded cork oak (Quercus suber) forests on flat lowlands in Morocco

Carbon Storage in a Eucalyptus Plantation Chronosequence in Southern China

Simulating Various Terrestrial and Uav Lidar Scanning Configurations for Understory Forest Structure Modelling

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