scholarly journals Physical Strain, Exposure to Noise and Postural Assessment in Motor-Manual Felling of Willow Short Rotation Coppice

2019 ◽  
Vol 40 (2) ◽  
pp. 377-388 ◽  
Author(s):  
Stelian Alexandru Borz ◽  
Nicolae Talagai ◽  
Marius Cheţa ◽  
Diana Chiriloiu ◽  
Alex Vinicio Gavilanes Montoya ◽  
...  

Biomass for energy production and other bioproducts may be procured from various sources including willow short-rotation coppice (WSRC). Management of WSRCs involves several operations, including harvesting, which accounts for the greatest cost share and, if conducted motor-manually, it can expose the workers to noise, uncomfortable work postures and high cardiovascular loads. In this study, we evaluated the productivity, physical strain, exposure to noise, and postural risk index of workers operating in motor-manual felling of WSRC using a set of automatic dataloggers. Productivity of felling operations was rated at 0.07 ha/h, which is in line with the results reported by other studies. Cardiovascular load was rated at cca. 35% of the HRR, indicating a medium to heavy work experienced by the feller, with a greater contribution of tasks involving movement. Exposure to noise (LEX,8h = 95.19) exceeded the limit value set by the European legislation (87 dBA) and it could increase as a function of the engine utilization rate, which was 68% in this study, advocating for mandatory wearing of protective equipment. Postural risk index was evaluated at 191.11% for the worker handling the brush cutter and at 192.02% for the manual assistant indicating rather reduced risks, but also the need to evaluate how the dynamic work of the upper limbs would affect the workers’ health. While this work stands for a preliminary case study, the procedures described may be successfully used to easily collect long-term data in such operations.

GCB Bioenergy ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 1283-1297 ◽  
Author(s):  
Gerald Kalt ◽  
Andreas Mayer ◽  
Michaela C. Theurl ◽  
Christian Lauk ◽  
Karl‐Heinz Erb ◽  
...  

New Forests ◽  
2019 ◽  
Vol 50 (6) ◽  
pp. 969-990 ◽  
Author(s):  
Maurizio Ventura ◽  
Pietro Panzacchi ◽  
Enrico Muzzi ◽  
Federico Magnani ◽  
Giustino Tonon

2017 ◽  
Vol 97 ◽  
pp. 525-535 ◽  
Author(s):  
Nicholas J.B. Brereton ◽  
Nicolas Berthod ◽  
Benoit Lafleur ◽  
Karine Pedneault ◽  
Frederic E. Pitre ◽  
...  

2015 ◽  
Vol 75 ◽  
pp. 85-92 ◽  
Author(s):  
E. Santangelo ◽  
A. Scarfone ◽  
A. Del Giudice ◽  
A. Acampora ◽  
V. Alfano ◽  
...  

Fuel ◽  
2021 ◽  
Vol 295 ◽  
pp. 120601
Author(s):  
Ana Álvarez ◽  
Sergio Migoya ◽  
Roy Menéndez ◽  
Gemma Gutiérrez ◽  
Consuelo Pizarro ◽  
...  

2013 ◽  
Vol 33 (11) ◽  
pp. 2195-2203 ◽  
Author(s):  
B. Vandecasteele ◽  
K. Willekens ◽  
A. Zwertvaegher ◽  
L. Degrande ◽  
F.M.G. Tack ◽  
...  

2016 ◽  
Vol 13 (1) ◽  
pp. 95-113 ◽  
Author(s):  
S. Sabbatini ◽  
N. Arriga ◽  
T. Bertolini ◽  
S. Castaldi ◽  
T. Chiti ◽  
...  

Abstract. The production of bioenergy in Europe is one of the strategies conceived to reduce greenhouse gas (GHG) emissions. The suitability of the land use change from a cropland (REF site) to a short-rotation coppice plantation of hybrid poplar (SRC site) was investigated by comparing the GHG budgets of these two systems over 24 months in Viterbo, Italy. This period corresponded to a single rotation of the SRC site. The REF site was a crop rotation between grassland and winter wheat, i.e. the same management of the SRC site before the conversion to short-rotation coppice. Eddy covariance measurements were carried out to quantify the net ecosystem exchange of CO2 (FCO2), whereas chambers were used to measure N2O and CH4 emissions from soil. The measurements began 2 years after the conversion of arable land to SRC so that an older poplar plantation was used to estimate the soil organic carbon (SOC) loss due to SRC establishment and to estimate SOC recovery over time. Emissions from tractors and from production and transport of agricultural inputs (FMAN) were modelled. A GHG emission offset, due to the substitution of natural gas with SRC biomass, was credited to the GHG budget of the SRC site. Emissions generated by the use of biomass (FEXP) were also considered. Suitability was finally assessed by comparing the GHG budgets of the two sites. CO2 uptake was 3512 ± 224 g CO2 m−2 at the SRC site in 2 years, and 1838 ± 107 g CO2 m−2 at the REF site. FEXP was equal to 1858 ± 240 g CO2 m−2 at the REF site, thus basically compensating for FCO2, while it was 1118 ± 521 g CO2 m−2 at the SRC site. The SRC site could offset 379.7 ± 175.1 g CO2eq m−2 from fossil fuel displacement. Soil CH4 and N2O fluxes were negligible. FMAN made up 2 and 4 % in the GHG budgets of SRC and REF sites respectively, while the SOC loss was 455 ± 524 g CO2 m−2 in 2 years. Overall, the REF site was close to neutrality from a GHG perspective (156 ± 264 g CO2eq m−2), while the SRC site was a net sink of 2202 ± 792 g CO2eq m−2. In conclusion the experiment led to a positive evaluation from a GHG viewpoint of the conversion of cropland to bioenergy SRC.


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