2016
DOI: 10.1016/j.foreco.2015.11.048
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Root rather than leaf litter input drives soil carbon sequestration after afforestation on a marginal cropland

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Cited by 61 publications
(32 citation statements)
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“…The stronger relationship between SOC stocks and fine root biomass (R 2 = 0.42) indicated higher control of fine roots than of aboveground biomass on the soil C stock at our forest sites. Recent experiments with 13 C-labelled leaf and root materials confirmed that C derived from fine roots has more potential for long-term sequestration than foliar C, presumably due to the recalcitrant nature of root compounds (Hu et al 2016). Contrary with our second hypothesis, the influence of aboveground and fine root biomass, induced by polyculture plantations showed no significant effect on the soil C stock at 50 cm soil depth.…”
Section: Tree Biomass and Soil C And N Stockscontrasting
confidence: 66%
“…The stronger relationship between SOC stocks and fine root biomass (R 2 = 0.42) indicated higher control of fine roots than of aboveground biomass on the soil C stock at our forest sites. Recent experiments with 13 C-labelled leaf and root materials confirmed that C derived from fine roots has more potential for long-term sequestration than foliar C, presumably due to the recalcitrant nature of root compounds (Hu et al 2016). Contrary with our second hypothesis, the influence of aboveground and fine root biomass, induced by polyculture plantations showed no significant effect on the soil C stock at 50 cm soil depth.…”
Section: Tree Biomass and Soil C And N Stockscontrasting
confidence: 66%
“…Carbon accumulated in root fractions showed a trend to be higher in sludge amended planting holes than in control ones. The benefit of amendments was more pronounced in root‐C than in litter‐C fractions, and this could have a longer term impact on soil C sequestration as it is mostly driven by roots rather than by litter (Hu, Zeng, Ma, & Chang, ). Nevertheless, in most forests, the organic fraction present in surface detritus and roots is the lesser amount of the whole C pool as compared with aboveground biomass and mineral SOM (Fahey et al, ).…”
Section: Discussionmentioning
confidence: 99%
“…The benefit of amendments was more pronounced in root-C FIGURE 3 Annual rates of C accumulation in the control and the most successful treatments on each experimental site: 30 Mg/ha of compost and dry sewage sludge in Enguera, 220 Mg/ha of fresh sewage sludge in Zarra, and 10 Mg/ha of liquid sludge in Ayora. The percentage of increment relative to control is shown on the right axis (green line) [Colour figure can be viewed at wileyonlinelibrary.com] than in litter-C fractions, and this could have a longer term impact on soil C sequestration as it is mostly driven by roots rather than by litter (Hu, Zeng, Ma, & Chang, 2016). Nevertheless, in most forests, the organic fraction present in surface detritus and roots is the lesser amount of the whole C pool as compared with aboveground biomass and mineral SOM (Fahey et al, 2010).…”
Section: Discussionmentioning
confidence: 99%
“…Carbon costs (growth respiration) of constructing roots are commonly lower than aboveground tissues [ Poorter , ]. In addition, tissue lifespan [ Withington et al ., ], decomposability [ Hobbie et al ., ], maintenance respiration [ Segal and Sullivan , ], and contribution to soil carbon accumulation [ Hu et al ., ] differ among leaves and roots. Integration of these essential root traits into ESMs will improve understanding of how arctic tundra plants will respond to climate warming, through informing the magnitude of warming‐induced increases in nitrogen availability on tundra carbon production.…”
Section: Discussionmentioning
confidence: 99%