Management tools for Castanea sativa coppice stands in northwestern Spain

Menéndez-Miguélez, María; Álvarez‐Álvarez, Pedro; Majada, Juan; Canga, Elena

doi:10.4067/s0717-92002016000100012

Cited by 14 publications

(7 citation statements)

References 10 publications

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“…The edaphic, climatic and ecological conditions in Asturias are ideal for growing trees and the area represents one of the regions with highest potential for growth of trees in Europe [12][13][14][15][16][17]. The trees could be used to generate a significant amount of timber and timber residues with a huge potential for use in energy production.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Tree Species for Biomass Energy Production in Northwest Spain

Álvarez‐Álvarez

Pizarro

Barrio-Anta

et al. 2018

Forests

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Three types of forest stands (chestnut coppice, maritime pine stands, and poplar and willow short-rotation woody crops (SRWC)) were evaluated to determine their potential for energy production. The properties of the main aboveground biomass fractions (wood, bark and crown) and also the whole tree were analysed, thus providing data that could be used for management purposes and for evaluating potential forest, biomass energy yields and atmospheric emissions. Proximate, elemental and energetic analyses of the biomass provided important information for evaluating the fuel potential. The energetic value of the biomass derived from the maritime pine stands was higher than that of the poplar and willow clonal stands and chestnut coppice stands. The high ash content of the chestnut bark, relative to that of the wood and crown material, is also an important consideration in relation to energy production. The proportion of carbon concentration accumulated per tree was very similar in all types of material studied, although the N and S contents were higher in the maritime pine stands than in the other stands. For this reason, selection of species and fractions can help to improve fuel quality and the efficiency of the combustion processes, and to minimize atmospheric emissions.

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Section: Introductionmentioning

confidence: 99%

Evaluation of Tree Species for Biomass Energy Production in Northwest Spain

Álvarez‐Álvarez

Pizarro

Barrio-Anta

et al. 2018

Forests

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“…Plot P1 and mainly P3 (without intervention) are out of this range of values and more closely to the densities observed in NW Spain. The P3 at age 24 produces mean diameter and volume similar to that of the NW Spain yield table (Menéndez-Miguélez et al 2016) prediction for high density in a medium site index. These yield tables do not apply to the remaining plots due to the differences in density that imply different forestry managements.…”

Section: Resultsmentioning

confidence: 59%

“…The equation developed for the NW of Spain (Menéndez-Miguélez et al 2015, 2016) was used to define the site quality since in Portugal SI equations are yet not available for chestnut coppice. Estimated average site quality was SI 20 = 15 m. Comparing with de site index curves of Duplat presented in Bourgeois et al (2004), our SI ranges from about 15-17 m for the same reference age.…”

Section: Resultsmentioning

confidence: 99%

Does the application of silvicultural management models drive the growth and stem quality of sweet chestnut coppices towards sustainability?

2019

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The coppice is a very flexible cultural system producing several calibers adapting to the demands of the market. Small-caliber roundwood from sweet chestnut (Castanea sativa Mill.) coppices, formerly in great demand, is now less interesting for the market. Thus, the improvement of coppices management by applying alternative silvicultural models in order to obtain benefits and sustainability is essential. For this purpose, four permanent plots (P1-P4) were established in 1994 to monitor different coppice management systems. The plots were installed in a coppice which resulted from the final clear cut of a sweet chestnut high-forest stand in 1992, at 50 years old. Three silvicultural management models were tested in order to produce roundwood of small (P1), medium (P2), and large (P4) diameters. A control plot was established without any type of silviculture which corresponds to most of the existing chestnut coppices (P3 = without intervention). Thinnings were applied in the plots according to the respective management model. Twenty-four years after the sprouting of the coppice, the silvicultural models were evaluated according to their objectives in terms of growth, yield, and quality of the sawlogs. This assessment period corresponds to the end of the rotation period for P1, and the results are in accordance with expected values. In P2 and P4 the observed growth closely matches expectations for this growth stage of the coppice. The quality of the sawlogs is clearly superior to that of the plot without intervention. Comparing the mean dendrometric values, higher values were observed in plots where the models were applied. The results also show that when roundwood is used for saw-timber, silvicultural management is essential.

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“…SDMDs have been constructed for several forest species worldwide to achieve diverse management objectives. and Castanea sativa coppices (Menéndez-Miguélez et al 2016). In general, these tools are less available for broadleaves than for conifers.…”

Section: Introductionmentioning

confidence: 99%

Density management diagrams for sweet chestnut high-forest stands in Portugal

Patrício¹,

Nunes²

2017

iForest

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This study aims to develop stand density management diagrams (SDMDs) for pure even-aged high-forest stands of sweet chestnut in Portugal, defining the appropriate upper and lower limits of growing stock while considering the biological, technological and economic objectives that are expected for these stands. The SDMDs were developed with data collected from high-forest stands in northern Portugal, which is the main representative area of these stands in the country. Data were collected from 23 pure even-aged permanent plots with re-measurement intervals of 4-10 years, 43 semi-permanent plots and 18 even-aged temporary plots; all plots were established in chestnut high-forest stands with a broad range of ages. SDMDs were constructed by simultaneously fitting four nonlinear equations relating stand variables using the full information likelihood technique. SDMDs for the estimation of stand total volume, stand stem biomass, stand total aboveground biomass, and carbon content in aboveground biomass are presented as bivariate graphs with dominant height on the x-axis and the number of trees per hectare on the y-axis (using logarithmic scale). A tool is made available to define an optimal range of stand density for a silviculture oriented to single-stem selection on a tree-by-tree basis, focusing management on the most valuable trees. This tool is aimed to support forest managers in the decision-making process, enabling them to schedule thinnings on the basis of the dominant height growth of the trees with the greatest potential (frame trees), maintaining an adequate growing stock and assessing the corresponding aboveground wood volume, biomass, carbon, and mean diameter breast height.

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Management tools for Castanea sativa coppice stands in northwestern Spain

Cited by 14 publications

References 10 publications

Evaluation of Tree Species for Biomass Energy Production in Northwest Spain

Evaluation of Tree Species for Biomass Energy Production in Northwest Spain

Does the application of silvicultural management models drive the growth and stem quality of sweet chestnut coppices towards sustainability?

Density management diagrams for sweet chestnut high-forest stands in Portugal

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