Changes in total carbon and nutrients in soil profiles and accumulation in biomass after a 30-year rotation of Pinus radiata on podzolized sands: Impacts of intensive harvesting on soil resources

Hopmans, P.; Elms, Stephen

doi:10.1016/j.foreco.2009.02.010

Cited by 31 publications

(12 citation statements)

References 31 publications

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“…These results are in agreement with the results of Rossi et al (2009), Qing-Biao et al (2009 and Hopmans and Elms (2009), who concluded that with increasing soil depth, bulk density and pH increased, while the amount of N %, organic matter and OC decreased. Previous studies also have revealed that there is an inverse relationship between soil carbon sequestration and soil depth in arid and semi-arid regions (Rice 2000).…”

Section: Resultssupporting

confidence: 92%

Capability investigation of carbon sequestration in Artemisia aucheri Bioss

Sadeghi

Raeini

2015

Int. J. Environ. Sci. Technol.

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Artemisia spp. is widespread Iranian rangelands, covering more than 50 % of land cover. The present study was conducted to estimate the amount of carbon sequestration in soil containing Artemisia aucheri at different soil depths (0-15 and 15-30 cm), as well as its organs (root, shoot and leaves) and some soil chemical and physical characteristics in the SalehAbad region, 41 km north of HajiAbad, Hormozgan, Iran. The results showed that soil with 0-15 cm depth had higher soil pH and moisture percentage, as well as lower nitrogen percentage and organic carbon percentage than soil at deeper depths. Soil samples from 0 to 15 cm depth had higher clay percentage. Multiple regression showed that nitrogen percentage and moisture percentage were the most effective traits contributing to carbon sequestration. Root and leaf plant tissues had higher and lower stored organic carbon, respectively. Overall, the results of this study indicated that the highest carbon sequestration was obtained at a soil depth of 0-15 cm and in the roots of A. aucheri in the SalehAbad region. Therefore, by recognizing the species that have more potential for carbon sequestration, as well as more resistance to environmental limits such as salinity and drought, and also to investigate the management factors affecting the sequestration process, regeneration and rehabilitation of rangeland can be followed in terms of carbon sequestration.

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Section: Resultssupporting

confidence: 92%

Capability investigation of carbon sequestration in Artemisia aucheri Bioss

Sadeghi

Raeini

2015

Int. J. Environ. Sci. Technol.

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“…Based on these observations, some studies examined the effects of forest thinning on soil CO 2 efflux with equivocal results ranging from positive effect on soil carbon release [14], negative effect [5,15] and no effect [16][17][18]. Others reported that intensive biomass harvesting may negatively impact carbon stocks in forest soil and vegetation [11], forest thinning did not have a significant impact on carbon stocks or fluxes [19], and remaining residues after harvesting increased carbon storage [20]. Unfortunately, few studies have examined the concurrent effects of two or more factors simultaneously, e.g., thinning and residual removal (branches, needle/leaf and twigs removed with thinning) on the forest net ecosystem productivity (NEP).…”

Section: Introductionmentioning

confidence: 99%

Optimization Forest Thinning Measures for Carbon Budget in a Mixed Pine-Oak Stand of the Qingling Mountains, China: A Case Study

Hou

Luo

et al. 2016

Forests

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Forest thinning is a silviculture treatment for sustainable forest management. It may promote growth of the remaining individuals by decreasing stand density, reducing competition, and increasing light and nutrient availability to increase carbon sequestration in the forest ecosystem. However, the action also increases carbon loss simultaneously by reducing carbon and other nutrient inputs as well as exacerbating soil CO 2 efflux. To achieve a maximum forest carbon budget, the central composite design with two independent variables (thinning intensity and thinning residual removal rate) was explored in a natural pine-oak mixed stand in the Qinling Mountains, China. The net primary productivity of living trees was estimated and soil CO 2 efflux was stimulated by the Yasso07 model. Based on two years observation, the preliminary results indicated the following. Evidently chemical compounds of the litter of the tree species affected soil CO 2 efflux stimulation. The thinning residual removal rate had a larger effect than thinning intensity on the net ecosystem productivity. When the selective thinning intensity and residual removal rate was 12.59% and 66.62% concurrently, the net ecosystem productivity reached its maximum 53.93 t·ha −1 ·year −1 . The lower thinning intensity and higher thinning residual removal rated benefited the net ecosystem productivity.

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“…Post-fire exports of nutrients in stream water were significantly less than nutrient removals in burnt and harvested tree biomass of radiata pine. For example, exports of K, Ca and Mg of 8.4, 9.1 and 14.0 kg ha À1 over 3 years in stream water compare with total removals in tree biomass estimated at 207, 235 and 127 kg ha À1 for the 27 year-old radiata pine plantation at Clem (Hopmans and Elms, 2009). …”

Section: Solutesmentioning

confidence: 99%

“…The standing volume based on a pre-harvest assessment of the 27 year-old radiata pine stand was estimated at 358 m 3 ha À1 and the P content of the above-ground tree biomass was estimated at 28 kg ha À1 based on biomass data for 30 year-old radiata pine (Hopmans and Elms, 2009) and adjusted for the difference in stand volume. It is reasonable to assume that most of the tree crowns (foliage and smaller branches) were combusted and lost in convection currents during the wildfire and this was followed by total removal of burnt trees at salvage harvesting within 3 months after the fire.…”

Section: Phosphorusmentioning

confidence: 99%