Effects of thinning intensity on productivity and water use efficiency of Quercus robur L

Niccoli, Francesco; Pelleri, Francesco; Sansone, Dalila; Battipaglia, Giovanna

doi:10.1016/j.foreco.2020.118282

Cited by 22 publications

(19 citation statements)

References 72 publications

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“…According to many studies on the reforestation of degraded lands, we found a significant impact of thinning and species composition on planted trees (Ravagni et al 2015, Battipaglia et al 2017, Liu et al 2018, Niccoli et al 2020. The increasing coherence in synchronization since the last thinning among the tree-ring chronologies, as well as the increase in their correlation coefficients, points to similar thinning effects affecting the growth of pedunculate oak in the long period.…”

Section: Effects Of Thinning and Mixture On Growth Dynamics And Stem ...mentioning

confidence: 64%

“…Furthermore, in the early phase after planting, appropriate agronomical practices are needed to allow for a rapid tree growth. Thinning plays a significant role in the next stages, modifying the specific composition of the stand, the inter-and intraspecific competition among trees, and promoting growth and water use efficiency of the favoured trees (Niccoli et al 2020).…”

Section: Introductionmentioning

confidence: 99%

“…Tree-rings analysis is one of the most used techniques for detecting tree growth responses to environmental factors, as the coupled effects of site and climatic conditions can be assessed (Tardif et al 2003), and it has been applied in studies on mixed forest plantations to these aims (Battipaglia et al 2017, Niccoli et al 2020, Mazza et al 2021. Moreover, the positive effects of mixed-species composition, especially for resistance to climatic disturbances such as drought, can change under different growing conditions (e.g., nutrient-rich vs. nutrient-poor sites or wet vs. dry sites), suggesting the need to carefully consider specific site conditions (Pretzsch et al 2013).…”

Section: Introductionmentioning

confidence: 99%

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Effects of mixture and management on growth dynamics and responses to climate of Quercus robur L. in a restored opencast lignite mine

Manetti¹,

Mazza²,

Papini³

et al. 2022

iForest

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Opencast mining is currently one of the most destructive economic activities of natural ecosystems. Many restoration techniques have been developed to promote the recovery of terrestrial ecosystems degraded by mining, and afforestation and reforestation are among the most important methods to this purpose. In this study, we evaluated the combined effect of tree species mixture and thinning intervention on growth dynamics and responses to the climate of a target native planted oak (pedunculate oak, Quercus robur L.) about 40 years after reforestation of an opencast lignite mining area in Central Italy. The species used for reforestation were a native tree species (Q. robur L.), two valuable broadleaved trees (Fraxinus angustifolia Vahl. and Prunus avium L.) and a nitrogen-fixing tree (Alnus cordata Loisel.) to improve timber quality and restore the ecological and environmental value of the degraded land. Climate-growth relationships for precipitation, the Standardised Precipitation-Evaporation Index (SPEI), and temperature (on a monthly and seasonal scale) were tested together with indices based on tree-ring responses to drought. Thinning improved the stem quality and promoted a significant long-term increase in basal area increment (BAI, +31.0%) only in the mixture with alder. The thinning effect slightly mitigated radial growth reductions of oak trees during drought (resistance) and produced a general improvement in the magnitude of resilience and post-drought growth recovery (+37% and +27% on average, respectively). This effect was most evident when oak trees were mixed with only the N-fixing alder species, both after shorter-and longer-term drought or rainfall reduction. In conclusion, the mixture with alder combined with thinning practices resulted in the best management option to produce good-quality stems, improve growth performances, and mitigate drought effects in the recovery of opencast lignite mines through reforestation.

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Section: Effects Of Thinning and Mixture On Growth Dynamics And Stem ...mentioning

confidence: 64%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of mixture and management on growth dynamics and responses to climate of Quercus robur L. in a restored opencast lignite mine

Manetti¹,

Mazza²,

Papini³

et al. 2022

iForest

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“…The experimental design of the common garden in blocks and micro-blocks was made to minimize as much as possible the variation in environmental conditions among trees to improve the detection of genetic variations. However, in addition to the influence of genetic factors on WUE i , that of variations in the microenvironment, including those generated by differences in social status, cannot be excluded (McDowell et al, 2003;Niccoli et al, 2020).…”

Section: High Within-population Variability In Intrinsic Water-use Ef...mentioning

confidence: 99%

Provenance Differences in Water-Use Efficiency Among Sessile Oak Populations Grown in a Mesic Common Garden

Rabarijaona

Ponton

Bert

et al. 2022

Front. For. Glob. Change

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ContextAs a widespread species, sessile oak (Quercus petraea) populations occupy a wide range of ecological conditions, with large gradients of soil water availability. Drought acclimation involves a plastic increase in water-use efficiency (WUE), a trait that is easily measured using the carbon isotope composition (δ13C). However, the question remains whether WUE is an adaptive trait that impacts the fitness of trees in natural environments.Objectives and MethodsTo investigate whether WUE was a drought-adaptive trait, we studied a sample of 600 trees originating from 16 provenances, grown for 21 years in a common garden. Intrinsic WUE (WUEi), estimated from tree ring δ13C, was compared among and within populations for three climatically contrasted years. The adaptive character of WUEi was evaluated by relating population mean WUEi, as well as its plasticity to drought, to the pedoclimatic conditions of their provenance sites. The contribution of WUEi to tree and population fitness was finally assessed from the relationship between WUEi and tree radial growth (GI).ResultsSignificant differences in WUEi were found among populations but a much larger variability was observed within than among populations. The population WUEi of the juvenile oak trees growing in the relatively mesic conditions of the common garden showed no relationship with a modeled water deficit index for the provenance sites. However, a higher population WUEi plasticity to severe drought was related to a higher proportion of silt and carbon and a lower proportion of sand in the soil of the provenance sites. In response to severe drought, populations with a higher increase in WUEi showed a lower decrease in GI. Populations with lower GI reduction were from sites with higher vapor pressure deficit in May–July (VPD). For the wet year only, populations with a higher WUEi also had a higher GI.ConclusionThe correlations observed at the common garden site between (i) population means of WUEi plasticity to drought and soil texture of the provenance sites, and (ii) GI plasticity to drought and VPD, suggested a local adaptation of sessile oak.

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“…The use of BAI avoids detrending procedure [46] allowing to not lose information on low frequency variability. Then average of Cumulative Basal Area (CBA) was determined by summing the average BAI and propagating uncertainties [47,48]. To distinguish the measurements of the two studied tree species in each intercropping systems, hereafter we refer to intercropping and then P (for poplar) and the J (for walnut) after an underscore, e.g., PJ_P refers to P. alba sampled in the PJ intercropping and PJ_J refers to J. regia sampled in the PJ intercropping.…”

Section: Sampling and Dendrochronological Processingmentioning

confidence: 99%

Tree Species Composition in Mixed Plantations Influences Plant Growth, Intrinsic Water Use Efficiency and Soil Carbon Stock

Niccoli

Danise

Innangi

et al. 2021

Forests

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Species interactions in mixed plantations can influence tree growth, resources capture and soil fertility of the stands. A combined approach of tree-ring analyses and carbon stable isotope was used to check tree growth and water use efficiency of two species, Populus alba L. and Juglans regia L., intercropped with each other and with N-fixing or competitive production species. Furthermore, soil analyses were performed to understand how the different intercropping systems can influence soil characteristics, in particular soil carbon stock. Dendrochronological data showed that during the first years, the growth of principal species was favored by intercropping. This positive effect decreased in the following years in most of intercropped stands, due to light competition with the crown of companion species. Carbon isotope data showed that P. alba and J. regia had the highest intrinsic water use efficiency when growing with Elaeagnus umbellata Thunb, a shrubby species with a shallow root system that favors a non-competitive exploitation of soil water resources. Finally, the intercropping of the principal species with Corylus avellana L. promoted the highest soil C stock. Our findings confirmed the importance to consider the plantation dynamics and wood formation in the long-run and to apply appropriate thinning and pruning interventions to counteract interspecific competition.

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Effects of thinning intensity on productivity and water use efficiency of Quercus robur L

Cited by 22 publications

References 72 publications

Effects of mixture and management on growth dynamics and responses to climate of Quercus robur L. in a restored opencast lignite mine

Effects of mixture and management on growth dynamics and responses to climate of Quercus robur L. in a restored opencast lignite mine

Provenance Differences in Water-Use Efficiency Among Sessile Oak Populations Grown in a Mesic Common Garden

Tree Species Composition in Mixed Plantations Influences Plant Growth, Intrinsic Water Use Efficiency and Soil Carbon Stock

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