Machinery and Equipment in Harvesting

Castro, Gustavo Pereira; Malinovski, Jorge Roberto; Nutto, Leif; Malinovski, Ricardo Anselmo

doi:10.1007/978-3-642-54601-3_183

Cited by 3 publications

(2 citation statements)

References 6 publications

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“…In addition, in some cases, the use of fast-growing trees allows rotation cycles of 8-10 years (J. S. Pereira et al, 1996). Altogether, these factors contribute to the high productivity and profit trait of forest plantations (Castro et al, 2016;Forrester & Smith, 2012;L opez-Amoedo et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

What is the extension of bench terrace construction for forest plantations? The case of North Central Portugal

et al. 2023

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Over the last decades, the establishment of new fast‐growing forest plantations has been prospering. Although the European continent has the lowest share worldwide of forest plantations out of its total forest area, the Portuguese reality contrasts this. Since the last century, eucalypt plantations have increased widely in Portugal, and nowadays, it represents 36% of the total country's forests. Consequently, the soils of these plantations are commonly targeted with intensive soil mobilization by heavy machinery before planting, which in the case of sloped areas, frequently results in bench terracing. This study aims to quantify the widespread bench terracing implementation over the last 20 years in the Caramulo Mountains in north central Portugal. To do so, an analysis of satellite imagery was performed with Google Earth Pro, which allowed determining the coverage of forest areas where new terraces have been implemented, and their respective temporal dynamics. These results were then compared with additional spatiotemporal databases on land cover, topography, and bedrock, in order to understand the drivers of terrace implementation. Till date, 15% of the forest area in the mountains of Caramulo is under terraces, and over the last 20 years, the construction rate of new terraced land decreased in time, from 4% between 2000 and 2004 to 2% between 2015 and 2019. Among the two bedrock types existent in the area, terracing was found nearly exclusive over schist bedrock type (97%), while few areas were implemented over granites (3%). Their distribution was found limited above 30° of slope angle while 39% were found implemented below 15° of slope angle, conflicting with literature recommendations. Terracing was also found to be a driver of land cover change in 12% of the newly constructed terraces, whereas 8% were constructed over previous pine plantations and 4% on shrublands. This study allowed identifying several knowledge gaps associated with terracing implementation. Therefore, the authors of this work suggest a multidisciplinary approach when planning new terraces for a better assessment of the benefits and impacts of such land management practices.

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Section: Introductionmentioning

confidence: 99%

What is the extension of bench terrace construction for forest plantations? The case of North Central Portugal

et al. 2023

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“…Brazil alone has over 7.5 million ha of planted forests (FAO, ), and Eucalyptus plantations cover more than 5.6 million ha of the country (IBÁ, ). In tropical planted forests, homogeneous and short‐rotation plantations are often harvested in clear‐cut systems that favour high levels of mechanization with high productivity (Castro, Malinovski, Nutto, & Malinovski, ). As a result of the intensive traffic with increasingly bigger and heavier machinery commonly employed nowadays (especially during harvesting operations), soil compaction remains a major issue in forest production (Cambi, Certini, Neri, & Marchi, ; Osman, ).…”

Section: Introductionmentioning

confidence: 99%

Soil compaction caused by harvesting, skidding and wood processing in eucalyptus forests on coarse‐textured tropical soils

Tassinari¹,

Andrade²,

Dias³

et al. 2019

Soil Use and Management

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Eucalyptus forests play a major role in the world economy, providing raw materials for different purposes. In planted forests, harvest operations performed by heavy machinery may cause severe soil compaction. This study aimed to evaluate the impact of a full‐tree harvesting system in planted eucalyptus forests from Northeastern Brazil. Different soils were evaluated (two Hapludults and one Haplorthod) in two horizons (BA and Bt). We tested different equipment, namely feller buncher, skidder (with traffic intensities of 3, 6, 12 and 16 passes), flail (at different ground‐contact points), grapple saw and loader. The soil physical attributes reflected not only the impact of equipment traffic but also the intrinsic differences between the soils. Bulk density (ranging from 1.36 to 1.80 t m−3 after trafficking) related well to soil class and horizon. Precompression stress (ranging from 203 to 430 kPa) and degree of compaction (76%–94%) following trafficking were well correlated, while increase in bulk density (reaching a maximum of 20%) related more strongly to soil moisture. A contingency table was constructed with the number of compacted samples and further examined by correspondence analysis. Compaction varied according to soil, horizon and equipment, indicating that machine–soil interactions are very specific and demand detailed research under different conditions. The Haplorthod experienced the greatest amount of compaction, whereas the Hapludult‐2 was more resistant (60% and 25% of compacted samples, respectively). The grapple saw and the skidder at higher traffic intensities (12 and 16 passes) exerted the highest mechanical impacts (81% and 67% of compacted samples, respectively).

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Work for Industrial Forest Utilization in Natural Forests

Lewark

2022

Work in Tropical Forests

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Machinery and Equipment in Harvesting

Cited by 3 publications

References 6 publications

What is the extension of bench terrace construction for forest plantations? The case of North Central Portugal

What is the extension of bench terrace construction for forest plantations? The case of North Central Portugal

Soil compaction caused by harvesting, skidding and wood processing in eucalyptus forests on coarse‐textured tropical soils

Work for Industrial Forest Utilization in Natural Forests

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