Ecosystem carbon stocks and distribution under different land-uses in north central Alberta, Canada

Arevalo, Carmela B.M.; Bhatti, Jagtar S.; Chang, Scott X.; Sidders, Derek

doi:10.1016/j.foreco.2009.01.034

Cited by 99 publications

(65 citation statements)

References 48 publications

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“…This study demonstrated a significant loss of biomass C after conversion to CFP, which is similar to previous observations [36,37]. Forest conversion led to a reduction in biomass C by 41 Mg¨ha´1.…”

Section: Land Use Change Decreased Biomass Csupporting

confidence: 91%

Ecosystem Carbon Stock Loss after Land Use Change in Subtropical Forests in China

Fan

Guan

et al. 2016

Forests

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Converting secondary natural forests (SFs) to Chinese fir plantations (CFPs) represents one of the most important (8.9 million ha) land use changes in subtropical China. This study estimated both biomass and soil C stocks in a SF and a CFP that was converted from a SF, to quantify the effects of land use change on ecosystem C stock. After the forest conversion, biomass C in the CFP (73 Mg¨ha´1) was significantly lower than that of the SF (114 Mg¨ha´1). Soil organic C content and stock decreased with increasing soil depth, and the soil C stock in the 0-10 cm layer accounted for more than one third of the total soil C stock over 0-50 cm, emphasizing the importance of management of the top soil to reduce the soil C loss. Total ecosystem C stock of the SF and the CFP was 318 and 200 Mg¨ha´1, respectively, 64% of which was soil C for both stands (205 Mg¨ha´1 for the SF and 127 Mg¨ha´1 for the CFP). This indicates that land use change from the SF to the CFP significantly decreased ecosystem C stock and highlights the importance of managing soil C.

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Section: Land Use Change Decreased Biomass Csupporting

confidence: 91%

Ecosystem Carbon Stock Loss after Land Use Change in Subtropical Forests in China

Fan

Guan

et al. 2016

Forests

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“…In the context of global change, afforested poplar plantations for bioenergy are effective to offset carbon (C) emissions because they can contribute to fossil fuel displacement and C storage on former agricultural land [5][6][7][8]. Therefore, increasing our knowledge about C cycling and storage in poplar plantations is important to assess the C balance of this expanding type of land use.…”

Section: Introductionmentioning

confidence: 99%

Plastic Allometry in Coarse Root Biomass of Mature Hybrid Poplar Plantations

et al. 2015

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In this study, we sampled coarse root biomass of three poplar clones in four 13-year-old hybrid poplar (Populus spp.) plantations, with the objective of developing an allometric relationship between diameter at breast height (DBH) and coarse root biomass. A second objective was to test significance of site, clone and ×site clone interaction effects on coarse root biomass, using analysis of covariance (ANCOVA), with DBH as a covariate. Across the four sites, the general allometric relationship between DBH and coarse root biomass was highly significant (R 2 =0.78, p<0.001). However, given the high significance of the site effect (p< 0.001) in the ANCOVA and the differences in data distribution between sites, two allometric relationships were developed based on the fertility class of sites (high and moderate). Environmentspecific allometric relationships developed for two site fertility classes had a better fit (R 2 =0.81-0.90, p<0.001). ANCOVA, with DBH as a covariate and site fertility class as a main effect, also showed that both of these variables significantly affected (p <0.001) coarse root biomass allocation. Environmentspecific equations showed that higher coarse root biomass was allocated in harsher environments for a given DBH, probably to improve access to growth limiting soil nutrients or to build-up larger storage sites for amino acids and non-structural carbohydrates. Consequently, poplar coarse root biomass growth is both driven by ontogeny (size) and environment, reflecting the plasticity of the root system of mature poplars. Implications of using general vs. environment-specific equations in estimating stand-level root biomass and shoot to root ratios are discussed. Shoot to root ratios calculated using environment-specific equations were more strongly correlated to key environmental variables than ratios calculated using the general equation, with soil NO 3 supply rate being the strongest predictor of the ratio (R 2 =0.90, p<0.001).

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“…The highest content of labile carbon (C L ) was also determined in the forest ecosystem (Table 2). In the organic matter of this ecosystem, a large number of labile components are, because it accumulates especially in the upper parts of the soil profile as well as its mixing with the mineral particles is deficient (Arevalo et al, 2009), and thus their concentrations increase, while their stabilization is limited. The second the highest content of C L , unlike TOC, was in the agro-ecosystem.…”

Section: Resultsmentioning

confidence: 99%

Stability of Organic Mater of Haplic Chernozem and Haplic Luvisol of Different Ecosystems

Tobiašová¹,

Dębska²,

Banach-Szott³

2013

JCEA

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In this study, the changes in soil organic matter (SOM) and the possibilities of their monitoring in a shorter period of time by means of carbon parameters were followed. The experiment includes four ecosystems (forest, meadow, urban, and agro-ecosystem) on Haplic Chernozem (Močenok, Horná Kráľová, Trnava) and Haplic Luvisol (Ludanice, Veľké Zálužie, Lovce) of different localities. The objectives of this study were assessment of the differences in the stability of soil organic matter in different ecosystems and in soil types using labile forms of carbon and nitrogen, and also with dependence on particle size distribution. The highest contents of total organic carbon (TOC) and labile carbon (C L ) were in a forest ecosystem, but in case of other ecosystems, the differences were determined only in the contents of C L . After forest ecosystem, the highest content of C L was in agro-ecosystem > meadow ecosystem > urban ecosystem. Based on parameter of lability of carbon (L C ), the most labile carbon can be evaluated also in the forest ecosystem (0.209) > agroecosystem (0.178) > meadow ecosystem (0.119) and urban ecosystem (0.116). In the case of nitrogen, the differences were observed between the soils. Higher contents of NT and N L were recorded in Haplic Chernozen than in Haplic Luvisol. Contents of TOC (P < 0.05; r = -0.480), C NL (P < 0.05; r = -0.480), and N L (P < 0.01; r = -0.545) were in a negative correlation with the content of sand fraction. The values of studied parameters in meadow and urban ecosystems were relatively balanced, because in both cases, the vegetation cover were grass, pointing to a significant influence of vegetation on the parameters of SOM. ekosystémoch a pôdnych typoch s využitím labilných foriem uhlíka a dusíka a v závislosti od pôdnej textúry. Najvyššie obsahy TOC aj C L boli v lesnom ekosystéme, ale medzi ostatnými ekosystémami boli stanovené rozdiely len v obsahoch C L . Po lesnom ekosystéme bol najvyšší obsah C L v agroekosystéme > lúčnom ekosystéme > urbánnom ekosystéme. Na základe parametra lability uhlíka (L C ) môžeme tiež hodnotiť za najlabilnejší uhlík v lesnom ekosystéme (0,209) > agro-ekosystéme (0,178) > lúčnom ekosystéme (0,119) a urbánnom ekosystéme (0,116). V prípade dusíka boli zaznamenané rozdiely medzi pôdnymi typmi. Vyššie obsahy NT aj N L boli zaznamenané v černozemi ako v hnedozemi. Obsahy TOC (P < 0.05; r = -0.480), C NL (P < 0.05; r = -0.483) a N L (P < 0.01; r = -0.545) boli v negatívnej závislosti od obsahu frakcie piesku. Hodnoty sledovaných parametrov v lúčnom a urbánnom ekosystéme boli pomerne vyrovnané, pretože v obidvoch prípadoch boli vegetačným krytom trávy, čo poukazuje na výrazný vplyv vegetácie na parametre SOM.

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Ecosystem carbon stocks and distribution under different land-uses in north central Alberta, Canada

Cited by 99 publications

References 48 publications

Ecosystem Carbon Stock Loss after Land Use Change in Subtropical Forests in China

Ecosystem Carbon Stock Loss after Land Use Change in Subtropical Forests in China

Plastic Allometry in Coarse Root Biomass of Mature Hybrid Poplar Plantations

Stability of Organic Mater of Haplic Chernozem and Haplic Luvisol of Different Ecosystems

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