Poplar biomass production in short rotation under irrigation: A case study in the Mediterranean

González-González, Borja D.; Oliveira, N.; González, I.; Cañellas, Isabel; Sixto, Hortensia

doi:10.1016/j.biombioe.2017.10.004

Cited by 17 publications

(15 citation statements)

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“…Due to limitations on water use at a global scale [204], the irrigation of SRC crops is viewed with caution in areas where this practice is necessary. This has led to changes in the way irrigation is applied, moving away from flood irrigation towards more efficient systems such as drip irrigation, although much more can still be done to increase the technical efficiency [205].…”

Section: Irrigationmentioning

confidence: 99%

“…For this reason, the identification of genotypes with a greater water-use efficiency through different methodological approaches is undoubtedly of interest [208], seeking to combine materials with a high productivity and greater water-use efficiency [209]. This is especially true in the Mediterranean area [77,[210][211][212][213], although accepting a certain loss of production may be advisable in these scenarios [205].…”

Section: Irrigationmentioning

confidence: 99%

“…Highly productive genotypes such as 'AF2' and 'Monviso' have exhibited the greatest water-use efficiency under optimal conditions, although under restrictive water conditions, they have presented a similar water-use efficiency to that of the less productive genotypes. The strategy followed by all of them to improve the intrinsic water-use efficiency seems to be linked to stomatal control, rather than differences in the rate of photosynthesis [205].…”

Section: Irrigationmentioning

confidence: 99%

“…The precision of such allometric equations is generally sufficient for stem biomass components [254]. However, other examples of equations exist that include more predictive variables in the models, which can improve the precision of the estimations [11,47,205,[255][256][257][258]. Although specific genotype-level models provide the greatest precision, in cases where genotype identification is complicated, models for genotypes which are taxonomically close or taxonomic-specific models are often used.…”

Section: Productionmentioning

confidence: 99%

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Poplar Short Rotation Coppice Plantations under Mediterranean Conditions: The Case of Spain

Oliveira

Pérez-Cruzado

Cañellas

et al. 2020

Forests

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Developing a circular bioeconomy based on the sustainable use of biological resources, such as biomass, seems to be the best way of responding to the challenges associated with global change. Among the many sources, short rotation forest crops are an essential instrument for obtaining quality biomass with a predictable periodicity and yield, according to the areas of cultivation. This review aims to provide an overview of available knowledge on short rotation coppice Populus spp. plantations under Mediterranean conditions and specifically in Spain, in order to identify not only the status, but also the future prospects, for this type of biomass production. The analysis of available information was conducted by taking into consideration the following aspects: Genetic plant material; plantation design, including densities, rotation lengths and the number of rotations, and mixtures; management activities, including irrigation, fertilization, and weed control; yield prediction; biomass characterization; and finally, an evaluation of the sustainability of the plantation and ecosystem services provided. Despite advances, there is still much to be done if these plantations are to become a commercial reality in some Mediterranean areas. To achieve this aim, different aspects need to be reconsidered, such as irrigation, bearing in mind that water restrictions represent a real threat; the specific adaptation of genetic material to these conditions, in order to obtain a greater efficiency in resource use, as well as a greater resistance to pests and diseases or tolerance to abiotic stresses such as drought and salinity; rationalizing fertilization; quantifying and valuing the ecosystem services; the advance of more reliable predictive models based on ecophysiology; the specific characterization of biomass for its final use (bioenergy/bioproducts); technological improvements in management and harvesting; and finally, improving the critical aspects detected in environmental, energy, and economic analyses to achieve profitable and sustainable plantations under Mediterranean conditions.

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Section: Irrigationmentioning

confidence: 99%

Section: Irrigationmentioning

confidence: 99%

Section: Irrigationmentioning

confidence: 99%

Section: Productionmentioning

confidence: 99%

See 2 more Smart Citations

Poplar Short Rotation Coppice Plantations under Mediterranean Conditions: The Case of Spain

Oliveira

Pérez-Cruzado

Cañellas

et al. 2020

Forests

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“…Hence, SRC crops face an uncertain future which underlines the need for an improved understanding of tree susceptibility to water stress and real water needs during the growing season. The challenge, in the near future, for growers of SRC poplar will be to resort to irrigation, even in midlatitude regions, to have profitable yields (Di et al., 2019; González‐González, Oliveira, González, Cañellas, & Sixto, 2017). The assessment of crop water requirements ( E c ) for specific genotypes is necessary for an efficient management of the irrigation system.…”

Section: Discussionmentioning

confidence: 99%

Identifying the best plant water status indicator for bio‐energy poplar genotypes

2020

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This contribution provides better insights in the water relations and the physiological traits of four commercial poplar genotypes of different genetic background, 'Bakan', 'Oudenberg', 'Koster' and 'Grimminge'. The main continuous (nondestructive and providing continuous and automated data records) and discontinuous (destructive and not allowing automation) plant water status (PWS) indicators were monitored at a multigenotype, commercial-scale short-rotation coppice plantation in East-Flanders (Belgium), and their relationships with the principal environmental variables were assessed. All measurements were performed during the entire 2016 growing season on the third year of the third rotation in multistemmed trees. The discontinuous PWS indicators were measured on 10 separate days with a different evaporative demand and soil water content, while the continuous PWS indicators were recorded from April to November. The genotypes responded differently to environmental drivers and to soil conditions, based on the PWS indicators, featuring a different water behaviour in relation to the level of isohydricity. Poplar genotypes 'Koster' and 'Bakan' showed the typical water-conserving behaviour of isohydric species, while 'Grimminge' was more in line with the anisohydric ones. A principal component analysis showed that sap flow (F s ) was the most suitable PWS indicator. The F s and therefore the sap flow-based canopy transpiration (E c ) were tightly linked to the phenological stage of the trees as well as to vapour pressure deficit and photosynthetic photon flux density, based on relationships between E c and environmental variables. A quantitative predictive model was developed to estimate the crop water requirements for specific genotypes, by calculating transpiration per unit of ground area with a few environmental variables, monitored with easy-to-handle sensors.

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From facilitation to competition: the effect of black locust (Robinia pseudoacacia L.) on the growth performance of four poplar-hybrids (Populus spp.) in mixed short rotation coppice

et al. 2020

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Short rotation coppices play an important role in providing biomass for energetic use. Mixing fast-growing tree species in short rotation coppices may show complementarity effects and increased yield. The aim of this study was to analyze the effect of species interaction in mixed short rotation coppices with fast-growing Populus spp.-hybrids and the N-fixing Robinia pseudoacacia. Four different Populus-hybrids (AF2, Fritzi Pauley, Hybride 275 and Max 1), planted alternately in pure and mixed stands with R. pseudoacacia were used for the analysis. Height and root collar diameter were measured once a year, over a period of four years (2014–2017). Additionally, in the third year, aboveground competition was surveyed with a terrestrial laser scanner and root biomass was analyzed to assess belowground competition. Soil nitrogen was also determined in order to verify enrichment properties of mixtures compared to pure stands. Populus-hybrids’ stem volume showed no significant differences between stand types in the first year after planting. In the second and third year, however, two Populus-hybrids (AF2 and Max 1) had a higher stem volume increment of up to 3.8 times than stem volume increment in pure stands. This may be related to the fact that soil nitrogen was 39% higher in the mixtures than in pure stands. However, in the 4th year after stand establishment, R. pseudoacacia’s crowns were so massive and broad, that this species was far more competitive than the Populus-hybrids. With the exception of P. ‘Fritzi Pauley’, which showed no significant differences between stand types, growth rates reversed for the other three Populus-hybrids. AF2, Max 1 and Hybride 275 showed up to 75% lower stem volume increment in mixtures compared to pure stands. We assume that, in spite of the initially observed facilitation between the species, the competition exerted by R. pseudoacacia started dominating after 4 years and began to surpass the benefits of facilitation.

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Poplar biomass production in short rotation under irrigation: A case study in the Mediterranean

Cited by 17 publications

References 50 publications

Poplar Short Rotation Coppice Plantations under Mediterranean Conditions: The Case of Spain

Poplar Short Rotation Coppice Plantations under Mediterranean Conditions: The Case of Spain

Identifying the best plant water status indicator for bio‐energy poplar genotypes

From facilitation to competition: the effect of black locust (Robinia pseudoacacia L.) on the growth performance of four poplar-hybrids (Populus spp.) in mixed short rotation coppice

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