DAMAGE TO REMAINING TREES BY FOUR SYSTEMS OF MECHANIZED HARVEST IN COMMERCIAL THINNING OF &lt;i&gt;Pinus radiata&lt;/i&gt;

Acuña, Eduardo; Sanfuentes, Eugenio; Cancino, Jorge; Mena, Pablo

doi:10.5902/1980509833386

Cited by 4 publications

(2 citation statements)

References 8 publications

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“…Pine and eucalyptus plantations in Chile are fast growing, with P. radiata reaching mean annual increment values MAI m 3 •ha −1 •year −1 between 15 and 34, depending on the soil type [48]. The plantations are cut down after a cycle duration 10 to 25 years by clearing the entire plantation, and at a diameter at breast height (DBH) of 17 to 22 cm [48,65]. Harvest is done in a highly mechanized fashion.…”

Section: Study Sitementioning

confidence: 99%

Deforestation by Afforestation: Land Use Change in the Coastal Range of Chile

Braun

2022

Remote Sensing

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In southern Chile, an establishment of a plantation-based forest industry occurred early in the industrial era. Forest companies claim that plantations were established on eroded lands. However, the plantation industry is under suspicion to have expanded its activities by clearing near-natural forests since the early 1970s. This paper uses a methodologically complex classification approach from own previously published research to elucidate land use dynamics in southern Chile. It uses spatial data (extended morphological profiles) in addition to spectral data from historical Landsat imagery, which are fusioned by kernel composition and then classified in a multiple classifier system (based on support, import and relevance vector machines). In a large study area (~67,000 km2), land use change is investigated in a narrow time frame (five-year steps from 1975 to 2010) in a two-way (prospective and retrospective) analysis. The results are discussed synoptically with other results on Chile. Two conclusions can be drawn for the coastal range. Near-natural forests have always been felled primarily in favor of the plantation industry. Vice versa, industrial plantations have always been primarily established on sites, that were formerly forest covered. This refutes the claim that Chilean plantations were established primarily to restore eroded lands; also known as badlands. The article further shows that Chile is not an isolated case of deforestation by afforestation, which has occurred in other countries alike. Based on the findings, it raises the question of the extent to which the Chilean example could be replicated in other countries through afforestation by market economy and climate change mitigation.

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Section: Study Sitementioning

confidence: 99%

Deforestation by Afforestation: Land Use Change in the Coastal Range of Chile

Braun

2022

Remote Sensing

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“…Pemanenan kayu tidak terlepas dari penggunaan alat dan mesin dengan ukuran besar dan berat, hal ini terkait dengan bentuk, ukuran dan berat kayu yang dipanen tidak bisa dilakukan secara manual terutama di hutan alam Indonesia. Acuna et al (2018) mengemukakan bahwa penggunaan alat mekanis dalam pemanenan kayu akan membawa pengaruh negatif berupa kerusakan biologis pada tegakan tinggal. Kerusakan tegakan tinggal tersebut dapat menyebabkan terhambatnya pertumbuhan pohon karena adanya serangan hama dan serangga sehingga terjadi pembusukan pada pohon tersebut dan berakhir pada kematian.…”

Section: Pendahuluanunclassified

Residual Stand Damage Due to Timber Harvesting in PT Tunas Timber Lestari, Papua

Yuniawati¹,

Dulsalam²

2020

JPKW

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Timber harvesting activities can cause damage to residual stands, this can occur due to improper timber harvesting techniques. The study was conducted at one of PT Tunas Timber Lestari’s IUPHHK-HA in Papua Province. The results showed that: 1). The number of trees felled and skidded on 3 logging compartment with each of the 3 plot of observation sample has an area of 2 ha (the total area of the research is 18 ha) is 16 trees on average; 2). The average number of residual stand (trees with a diameter of ≥ 20 cm) damaged by logging is 26 trees (13.00%) per ha with details of damage to canopy of 4 trees (15.39%), broken branches of 13 trees (50.00%), the trunk wound of 2 trees (7.69%) and the collapsed/tilted of 7 trees (26.92%); 3). Damage to the residual stand in felling is caused more by the lack of skilled chainsaw operators in determining felling direction; 4) Damage to residual stands due to skidding is an average of 23 trees (9.99%) per ha, with details of 1 trees buttress (4.4%), wounds injuries of 7 trees steam (2.97) and collapsed/slanted 15 trees (65.2%); and 5). The cause of damage to the residual stand on skidding is that the skid trail has not been made and the skid tractor maneuvers too often.

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Potential of Wood Harvesting Residues and Residual Stand Damage due to Timber Harvesting: A Case Study at PT Austral Byna in Central Kalimantan, Indonesia

Suhartana

Yuniawati

Gandaseca

et al. 2022

International Journal of Forestry Research

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The practice of timber harvesting in natural forests which has been conducted up to now still leaves wood harvesting residue and residual stand damage. Most condition of wood harvesting residue is still good and can be utilized. The objective of this research was to determine the potency of wood harvesting residue and residual stand damage on timber harvesting in natural forests. The data on wood utilization, wood harvesting residue, and residual damage were collected from three sample plots. The sample plots were arranged in a systematic and purposive manner, and the data were processed with tabulation and average analysis. Research results showed that the average volume of wood being utilized was 9.212 m3 tree−1. The average volume of wood harvesting residues was 2.310 m3 tree−1, and the total average volume of wood harvesting residues which were good, defected, and broken was 2.121 m3 (80.952%), with an average volume for good wood harvesting residue condition of 1.038 m3 (34.808%). Proportions of wood harvesting residues were 2.154 m3 (94.444%) consisting of buttress as large as 0.102 m3 (5.159%), stumps as large as 0.375 m3 tree−1 (23.597%), butt as large as 0.855 m3 (35.930%), and end part as large as 0.821 m3 (29.758%). The average number of trees with a diameter of 20 cm which were damaged due to felling and skidding was 5 trees ha−1 (5.40%) and 6 trees ha−1 (6.58%), respectively.

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DAMAGE TO REMAINING TREES BY FOUR SYSTEMS OF MECHANIZED HARVEST IN COMMERCIAL THINNING OF <i>Pinus radiata</i>

Cited by 4 publications

References 8 publications

Deforestation by Afforestation: Land Use Change in the Coastal Range of Chile

Deforestation by Afforestation: Land Use Change in the Coastal Range of Chile

Residual Stand Damage Due to Timber Harvesting in PT Tunas Timber Lestari, Papua

Potential of Wood Harvesting Residues and Residual Stand Damage due to Timber Harvesting: A Case Study at PT Austral Byna in Central Kalimantan, Indonesia

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