Effect of girdling on soil respiration and root composition in a sweet chestnut forest

Frey, Beat; Hagedorn, Frank; Giudici, Fulvio

doi:10.1016/j.foreco.2006.01.003

Cited by 50 publications

(38 citation statements)

References 30 publications

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“…Binkley et al (2006) proposed that in both systems, large carbohydrate reserves in the root systems were utilized to sustain root activity. This has also been suggested in other deciduous forest systems (Frey et al 2006;Chen et al 2010). We do not believe this is a major source of error in the Quercus population.…”

Section: Discussionsupporting

confidence: 75%

“…These findings indicate that biotic and abiotic controls on photosynthesis can have large implications for forest carbon budgets. Factors that affect the rates of photosynthate production and soil biotic activity, such as herbivory, defoliation (Frey et al 2006), nutrient availability (Olsson et al 2005), and forest stand decline, have the potential to profoundly alter forest carbon balance.…”

Section: Discussionmentioning

confidence: 99%

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The autotrophic contribution to soil respiration in a northern temperate deciduous forest and its response to stand disturbance

2011

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The goal of this study was to evaluate the contribution of oak trees (Quercus spp.) and their associated mycorrhizal fungi to total community soil respiration in a deciduous forest (Black Rock Forest) and to explore the partitioning of autotrophic and heterotrophic respiration. Trees on twelve 75 × 75-m plots were girdled according to four treatments: girdling all the oaks on the plot (OG), girdling half of the oak trees on a plot (O50), girdling all non-oaks on a plot (NO), and a control (C). In addition, one circular plot (diameter 50 m) was created where all trees were girdled (ALL). Soil respiration was measured before and after tree girdling. A conservative estimate of the total autotrophic contribution is approximately 50%, as indicated by results on the ALL and OG plots. Rapid declines in carbon dioxide (CO(2)) flux from both the ALL and OG plots, 37 and 33%, respectively, were observed within 2 weeks following the treatment, demonstrating a fast turnover of recently fixed carbon. Responses from the NO and O50 treatments were statistically similar to the control. A non-proportional decline in respiration rates along the gradient of change in live aboveground biomass complicated partitioning of the overall rate of soil respiration and indicates that belowground carbon flux is not linearly related to aboveground disturbance. Our findings suggest that in this system there is a threshold disturbance level between 35 and 74% of live aboveground biomass loss, beyond which belowground dynamics change dramatically.

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Section: Discussionsupporting

confidence: 75%

Section: Discussionmentioning

confidence: 99%

The autotrophic contribution to soil respiration in a northern temperate deciduous forest and its response to stand disturbance

2011

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“…The bottom of the chamber was equipped with a deflector that prevented high fan speeds from creating erroneously high CO 2 flux values (Le Dantec et al 1999). The chambers were set up on permanent PVC collars (4.5 cm high) (Frey et al 2006). The respiration collars (10) were randomly located on three 20 9 20 m 2 sampling grids in the vicinity of the weather station at each site, and were inserted in the soil at a depth of 2.5 cm in autumn 2000.…”

Section: Sampling and Measurementsmentioning

confidence: 99%

Response of carbon fluxes to the 2003 heat wave and drought in three mature forests in Switzerland

et al. 2010

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The effects of the heat and drought of the summer 2003 on carbon (C) fluxes (soil CO 2 efflux, dissolved organic carbon in soil, C from litterfall and C sequestration in tree) were investigated in three mature forests in Switzerland between 2001 and 2005. Measurements of the soil matric potential (W) indicated a gradient in drought intensity at the three sites (Vordemwald, Schänis, Beatenberg) with average W during the summer 2003 of -75, -41 and -5 kPa, respectively. In Vordemwald where the drought was the most severe, the hourly soil CO 2 efflux declined by about 30% when W \ -90 kPa. Estimated annual soil CO 2 efflux in 2003 was about 10% smaller than effluxes in wetter years (2001, 2002 and 2004) but the differences were not significant. In Schänis and Beatenberg, no suppression of hourly soil CO 2 efflux was observed during the summer 2003. The annual efflux in 2003 at both sites was 10-15% larger than the effluxes in the other years but the differences were not significant. DOC concentrations increased during the first rewetting events after the drought in Vordemwald and in Schänis. This was mainly due to a concentration effect due to the low soil water content. Because precipitation was lower in 2003, annual DOC fluxes substantially decreased at the three sites. Carbon sequestration in tree stems in Vordemwald declined by 32% in 2003 compared to the mean 2002-2005. In Beatenberg and Schänis, tree growth responded little to the extreme summer 2003. Litterfall at the three sites showed no marked reaction to the summer 2003. Estimate of annual net ecosystem production (NEP) suggested that the stands in Vordemwald and in Schänis remained a C sink between 2002 and 2005 but that the extreme summer 2003 caused a decrease in NEP. In Beatenberg, the impact on the NEP seemed to be limited in 2003. The annual NEP in 2003 decreased with increasing drought intensity over the three sites.

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“…The current photosynthate supplies a substantial portion of the substrates used for root respiration Frey et al 2006). However, leaf area reduction in pruned trees did not result in the decline of root CO 2 efflux during the measurement period, which was contrary to our Trees second hypothesis.…”

Section: Soil Co 2 Effluxmentioning

confidence: 99%

Different responses of stem and soil CO2 efflux to pruning in a Chinese fir (Cunninghamia lanceolata) plantation

Yang

Liu

Zhang

et al. 2015

Trees

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Key message Pruning significantly reduced stem CO 2 efflux, but had little effect on soil CO 2 efflux and root respiration. Pruning did not alter temperature sensitivity of CO 2 efflux from stem and soil. Abstract Pruning is one of the common silvicultural practices for Chinese fir (Cunninghamia lanceolata) plantations to produce knot-free wood. However, little is known about the effects of pruning on stem and soil CO 2 efflux in Chinese fir plantations. In this study, we experimentally manipulated the canopy of Chinese fir by pruning the lower 50 % of the green crown length in a Chinese fir plantation. We monitored the effects of pruning on the stem and soil CO 2 efflux, stem radial growth, xylem sap flow, and nonstructural carbohydrate (NSC) concentrations. Our results showed that pruning resulted in the significant reduction of stem CO 2 efflux, particularly during the growing season. Despite the removal of the lower 50 % of the green crown length, we did not observe a pronounced reduction in soil CO 2 efflux and its components. Moreover, pruning had only little effect on sap flow. No significant difference was observed in the NSC concentrations between treatments in the stem cores and fine roots. We speculated that the different responses of stem and soil CO 2 efflux to pruning in the Chinese fir (sprouting species) plantation may have resulted from the different carbon allocations between aboveground and belowground tissues. However, further studies are required to confirm if our findings could be applied to other tree species or ecosystems.

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Effect of girdling on soil respiration and root composition in a sweet chestnut forest

Cited by 50 publications

References 30 publications

The autotrophic contribution to soil respiration in a northern temperate deciduous forest and its response to stand disturbance

The autotrophic contribution to soil respiration in a northern temperate deciduous forest and its response to stand disturbance

Response of carbon fluxes to the 2003 heat wave and drought in three mature forests in Switzerland

Different responses of stem and soil CO2 efflux to pruning in a Chinese fir (Cunninghamia lanceolata) plantation

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