Carbon storage and soil CO2 efflux rates at varying degrees of damage from pine wilt disease in red pine stands

Jeong, Jaeyeob; Kim, Choonsig; Lee, Kwang Soo; Bolan, Nanthi; Naidu, Ravi

doi:10.1016/j.scitotenv.2012.11.080

Cited by 22 publications

(16 citation statements)

References 21 publications

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“…This function depends on the dynamic equilibrium between the C inputs (C uptake), which involve incorporated plant-derived organic material and turnover rates, and C outputs (C release), which are due to decomposition (Davidson et al, 2011;Davidson and Janssens, 2006;Tian et al, 2011). Small changes in the content of soil OC (SOC) caused by alterations in land use and soil management practices or in soil erosion rates at regional to global scales could significantly impact atmospheric CO 2 concentrations (Díaz-Hernández, 2010;Jeong et al, 2013;Lal et al, 2007) and thereby affect local and global climate conditions (Desjardins et al, 2005;Lal, 2004b). A better understanding of the magnitude, spatial distributions and variations, and the control of OC in soil is necessary for evaluating the main biogeochemical processes and feedbacks involving soil-atmosphere CO 2 exchange (Hergoualc'h and Verchot, 2011;Wang et al, 2010b).…”

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confidence: 99%

Soil Organic Carbon Stocks in Deep Soils at a Watershed Scale on the Chinese Loess Plateau

Wang

Han

Jing-bo

et al. 2015

Soil Science Soc of Amer J

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An accurate evaluation of soil organic C (SoC) stocks is important to C management and to understanding fully the role of soils in the C cycle. However, SoC stocks in deep soils and the factors that affect them have been largely ignored. We measured SoC stocks and other soil properties to a depth of 500 cm (n = 73) under three land uses in the Lao ye Man Qu watershed on the Chinese Loess Plateau. Similar patterns in the vertical distributions of SoC stocks were found under cropland, grassland, and shrubland. However, for the 0-to 200-cm soil layer, SoC stocks were significantly lower under shrubland than under either cropland or grassland. The SoC stocks under cropland, grassland, and shrubland in the 0-to 100-cm layer were 2.64 ± 0.67, 2.50 ± 0.69, and 1.99 ± 0.22 kg m −2 , respectively; in the 0-to 500-cm layer they were 8.34 ± 2.26, 8.37 ± 2.01, and 7.26 ± 1.00 kg m −2 , respectively. Significantly higher SoC stocks occurred in loamy than sandy soils (P < 0.01), and they were lower at the mid than at the upper and lower slope positions. However, SoC stocks were similar in sunlit and shaded soils. Pearson correlation analysis indicated that land use, soil texture, and soil water content significantly affected SoC stocks in each 100-cm soil layer to a depth of 500 cm. Effects of topographic features and pH varied with increasing depth. A considerable amount of SoC was stored in deep soils, indicating the SoC content dependence on time and depth. This information is essential for evaluating C fluxes, estimating C stocks, and for managing the C cycles in regions around the world with deep soils.

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confidence: 99%

Soil Organic Carbon Stocks in Deep Soils at a Watershed Scale on the Chinese Loess Plateau

Wang

Han

Jing-bo

et al. 2015

Soil Science Soc of Amer J

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“…1). The study sites were severely PWD-disturbed regions in Korea since the outbreak of the disease in 1998 (Kwon et al 2011, Jeong et al 2013. By 2014, 8,020,000 trees in forests had been killed by PWD throughout the country (Korea Forest Service 2014).…”

Section: Methodsmentioning

confidence: 99%

“…Mortality in trees affected by PWD causes substantial losses of C and N stocks, with large influences on the C and N cycles in forest ecosystems. Analysis of the impacts of PWD outbreaks on C cycling have been performed on stand scales, and a previous stand-scale study in Korea documented large variability in PWD-affected C stocks (Jeong et al 2013). Numerous uncertainties limit estimates or predictions of the loss of C and N stocks in PWD-disturbed forests.…”

Section: Introductionmentioning

confidence: 99%

“…and red pine (P. densiflora S. et Z.) are the most dominant and important coniferous tree species that are severely disturbed by PWD throughout Korea (Kim et al 2010, Kwon et al 2011, Jeong et al 2013. Although numerous biomass estimation models have been developed for red pine in Korea , Noh et al 2013, no studies are available to predict tree C and N content in disturbed forest ecosystems such as PWD-disturbed forests.…”

Section: Introductionmentioning

confidence: 99%

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Allometric equations to assess biomass, carbon and nitrogen content of black pine and red pine trees in southern Korea

Kim¹,

Yoo²,

Jung³

et al. 2017

iForest

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A total of 74 Japanese black pine (Pinus thunbergii Parl.) and red pine (P. densiflora S. et Z.) trees were destructively sampled in southern Korea, which is severely affected by pine wilt disease (PWD). Species-specific allometric equations were developed to estimate the biomass, carbon (C) and nitrogen (N) content of the tree components (i.e., stem wood, stem bark, branches, needles and roots) based on the diameter at breast height (DBH) and stem diameter at 20 cm aboveground (D20). The C concentrations of the various tree components were not correlated with DBH (P > 0.05), except for the C concentration in the stem bark (r = -0.29, P < 0.05) of the black pine and the branches (r = 0.40, P < 0.05) of the red pine. However, the N concentrations in the stem wood (r = -0.53, P < 0.05), stem bark (r = -0.37, P < 0.05) and branches (r = -0.40, P < 0.05) of the black pine were negatively correlated with DBH. The mean C concentrations of the tree components were not significantly different between the black pine and red pine, except for the stem bark, whereas the mean N concentrations were significantly lower in the black pine than in the red pine, except for the stem bark. The allometric equations developed for the biomass, C and N content for all the tree components were significant (P < 0.05). The adjusted coefficient of determination (adj. R 2 ) of the DBH allometric equations ranged from 0.66 to 0.97, while the coefficients for the D20 equations were between 0.66 and 0.95. Black pines consistently exhibited more biomass, C and N content in the tree components compared with the red pines with similar DBH or D20. These results suggest that the accuracy of estimates for biomass, C and N stocks in black pine and red pine forests could be improved by specific allometric equations for PWD-disturbed forests.

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“…The R s dynamics under typical land use have been observed systematically, especially the R s observations in the forest (Jeong et al, 2013) and grassland ecosystems (Daniel et al, 2015). However, the combined impacts of land use conversion, and soil temperature on R s dynamics in freeze-thaw system are still not clear.…”

Section: Introductionmentioning

confidence: 99%

Soil respiration and carbon loss relationship with temperature and land use conversion in freeze–thaw agricultural area

Ouyang

Lai

Li³

et al. 2015

Science of The Total Environment

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Carbon storage and soil CO2 efflux rates at varying degrees of damage from pine wilt disease in red pine stands

Cited by 22 publications

References 21 publications

Soil Organic Carbon Stocks in Deep Soils at a Watershed Scale on the Chinese Loess Plateau

Soil Organic Carbon Stocks in Deep Soils at a Watershed Scale on the Chinese Loess Plateau

Allometric equations to assess biomass, carbon and nitrogen content of black pine and red pine trees in southern Korea

Soil respiration and carbon loss relationship with temperature and land use conversion in freeze–thaw agricultural area

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