Growth and nutrient uptake of perennial crops in a paludicultural approach in a drained Mediterranean peatland

Giannini, Vittoria; Silvestri, Nicola; Dragoni, Federico; Pistocchi, Chiara; Sabbatini, Tiziana; Bonari, E.

doi:10.1016/j.ecoleng.2015.11.049

Cited by 28 publications

(23 citation statements)

References 42 publications

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“…Nassi o Di Nasso et al [3] reported a poplar stool yield of 1380 ± 90 g DM m −2 in a 12-year-old SRC poplar stand in Pisa, which is higher than our result in the SRC (1073.9 ± 51.7 g DM m −2 ). Giannini et al [63] reported a value of around 1000 g DM m −2 , which is close to our value in the SRC, in a young SRC poplar stand (3 years) in organic soil in Tuscany. However, Ventura et al [64] reported a poplar C biomass of 1100 ± 200 g C m −2 year −1 in a young SRC poplar stand (3 years old) in Northern Italy, which is more or less two times higher than our C content value in the SRC (522.7 ± 24.5 g C m −2 year −1 ).…”

Section: Contribution Of the C Input To The Nbpsupporting

confidence: 91%

Carbon Budget of an Agroforestry System after Being Converted from a Poplar Short Rotation Coppice

et al. 2020

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Poplar (Populus L. spp.) Short Rotation Coppice systems (SRCs) for bioenergy production are being converted back to arable land. Transitioning to Alley Cropping Systems (ACSs) could be a suitable strategy for integrating former tree rows and arable crops. A field trial (Pisa, Central Italy) was set up with the aim of assessing the C storage of an ACS system based on hybrid poplar and sorghum (Sorghum bicolor L. Moench) and comparing it with that of an SRC cultivation system. The carbon budget at the agroecosystem scale was assessed in the first year of the transition using the net biome production (NBP) approach with a simplified method. The overall NBP for the SRC was positive (96 ± 40 g C m−2 year−1), highlighting that the system was a net carbon sink (i.e., NBP > 0). However, the ACS registered a net C loss (i.e., NBP < 0), since the NBP was −93 ± 56 g C m−2 year−1. In the first year of the transition, converting the SRC into an ACS counteracted the potential beneficial effect of C storage in tree belowground biomass due to the high heterotrophic respiration rate recorded in the ACS, which was fostered by the incorporation of residues and tillage disturbance in the alley. Additional years of heterotrophic respiration measurements could allow for an estimate of the speed and extent of C losses.

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Section: Contribution Of the C Input To The Nbpsupporting

confidence: 91%

Carbon Budget of an Agroforestry System after Being Converted from a Poplar Short Rotation Coppice

et al. 2020

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“…The measured values of P content were, also in this case, in line with what reported in literature (Giannini et al, 2017).…”

Section: Articlesupporting

confidence: 80%

“…This means that the rising soil nitrate content observed at end of August did not produce an increase of poplar N uptake presumably because the senescence process in poplar was already started. Anyway, the observed values of nitrogen content can be considered consistent with those reported in literature for different species of poplar at harvest time (Kauter et al, 2003;Pellis et al, 2004;Ceotto et al, 2016;Giannini et al, 2017).…”

Section: Poplar Biomass and Nutrient Uptakessupporting

confidence: 76%

Intercropping cover crops with a poplar short rotation coppice: Effects on nutrient uptake and biomass production

2018

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The risks of soil erosion and nutrient leaching can be considered appreciable in short rotation coppices especially in the first growth phases because of the absence of any plant cover. The temporary intercropping with legumes or grasses used as cover crops can help to overcome these environmental issues. The present research work aims to evaluate the effects of the introduction of cover crops in a short rotation poplar (Populus deltoides W. Bartram ex Marshall) with two-year harvest cycle. The plantation was located in a Typic Xerofluvent, silty-loam soil of the coastal Central Italy. Two different species of cover crops, Trifolium subterraneum L. (TS) and Lolium perenne L. (LP), were compared along with an untreated control, colonised by spontaneous vegetation (CO). Several plant and soil parameters were evaluated: the above ground biomass and nutrient accumulation for the three different soil cover types, the nitrate and water content in two soil layers (0.00-0.30 and 0.30-0.60 m), the poplar yield and nutrient content in branches and leaves.TS returned to the soil about 70 kg ha -1 of nitrogen at the end of its biological cycle, thanks to the high N content (over 2%) and to the noticeable amount of dry matter produced (3.46 t ha -1 of dry matter). This value was considerably higher than those of the LP (23 kg ha -1 of N) or CO (10 kg ha -1 ). The different amount of nitrogen returned to the soil affected both nitrate concentration in topsoil (0.00-0.30 m) and accumulation of nitrogen in poplar organs. Concerning phosphorous, the differences among treatments were less evident and the amount of P returned to the soil ranged from 2 (CO) to 10 (TS) kg ha -1 . However, the effect of soil cover type on P uptake in poplar was still appreciable. Generally, the soil water content was slightly affected by the soil cover types. Indeed, the differences between the cover crops and the control became significant only in the shallowest soil layer and over the summer season. In the first year, LP induced a significant decrease in poplar yield (10.1 t ha -1 of dry matter) in comparison with TS (14.7 t ha -1 ) and CO (13.4 t ha -1 ), whereas in the second year there were no significant differences among treatments due to the weak regrowth of cover crops.These results show how to make it feasible a long lasting coexistence between cover crops and SRC, a clever design of agro-forestry systems is therefore needed.

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“…was cultivated since April 2012 in Vecchiano (43°49′ 59.5″ N; 10°19′ 50.7″ E), about 10 km from Pisa (Italy) within a paludiculture system in the Natural Park of Migliarino-San Rossore-Massaciuccoli. This system lies within a larger phyto-treatment area (15 ha), described by Giannini et al [32], using eutrophic waters gathered from the surrounding reclamation district, in which the water table level is artificially lowered by pumping to allow for conventional farming [33]. Contrastingly, the water table level in the paludiculture system is kept markedly higher than in the surrounding watershed because of the continuous supply of water to be treated, and it ranges from 0-5 cm to 10-20 cm below the soil surface, during winter and summer, respectively.…”

Section: Field Experiments and Sample Collectionmentioning

confidence: 99%

Effect of Harvest Time and Frequency on Biomass Quality and Biomethane Potential of Common Reed (Phragmites australis) Under Paludiculture Conditions

et al. 2017

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This study examined the effect of harvest time (from May to September) and dry matter partitioning on biomethane potential and methane yield per unit area of Phragmites australis cultivation under paludiculture conditions. The experimental site is part of a larger experimental platform (San NiccolÃ², Pisa) located within the Massaciuccoli Lake Basin in Central Italy (Tuscany, IT). The study also took into account the double cut strategy by evaluating the regrowth from June to September. Biomethane potentials ranged from 384 to 315 and from 412 to 283Â NLÂ CH4Â kgÂ VSâ\u88\u921(normal liters of methane per kg of volatile solids) for leaves and stems, respectively. About digestion kinetics, maximum daily production rate (Rmax) was significantly affected by harvest time and not by plant partitioning. Along the harvest season, biomethane yield per unit area was mostly driven by the biomass yield showing an increasing trend from May (1659Â Nm3Â haâ\u88\u921) to September (3817Â Nm3Â haâ\u88\u921). The highest value was obtained with the double harvest option (4383Â Nm3Â haâ\u88\u921), although it was not statistically different from the single harvest carried out in September. Owing to its remarkably lower yields, P. australis cannot be considered along the same lines as crops conventionally used for biogas production, but it may represent an interesting option for paludiculture cropping systems by coupling peatland restoration with bioenergy production. September harvest management seemed the most feasible option, although further investigation on crop lifespan is needed

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Growth and nutrient uptake of perennial crops in a paludicultural approach in a drained Mediterranean peatland

Cited by 28 publications

References 42 publications

Carbon Budget of an Agroforestry System after Being Converted from a Poplar Short Rotation Coppice

Carbon Budget of an Agroforestry System after Being Converted from a Poplar Short Rotation Coppice

Intercropping cover crops with a poplar short rotation coppice: Effects on nutrient uptake and biomass production

Effect of Harvest Time and Frequency on Biomass Quality and Biomethane Potential of Common Reed (Phragmites australis) Under Paludiculture Conditions

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