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

2022 ◽  
Vol 2022 ◽  
pp. 1-8
Author(s):  
Sona Suhartana ◽  
Yuniawati ◽  
Seca Gandaseca ◽  
Dulsalam ◽  
Soenarno ◽  
...  
Keyword(s):  
Timber Harvesting ◽  
Natural Forests ◽  
Average Volume ◽  
Wood Harvesting ◽  
Average Analysis ◽  
Residual Damage ◽  
Stand Damage ◽  
Residual Stand Damage ◽  
Total Average

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.

scholarly journals Residual Stand Damage under Different Harvesting Methods and Mitigation Strategies

2021 ◽  
Vol 13 (14) ◽  
pp. 7641
Author(s):  
Anil Raj Kizha ◽  
Evan Nahor ◽  
Noah Coogen ◽  
Libin T. Louis ◽  
Alex K. George
Keyword(s):  
Forest Management ◽  
Sugar Maple ◽  
Sustainable Forest Management ◽  
Timber Harvesting ◽  
Mitigation Strategies ◽  
Left Behind ◽  
Significant Difference ◽  
Stand Damage ◽  
Residual Stand Damage ◽  
Silvicultural Prescriptions

A major component of sustainable forest management are the stands left behind after the logging operation. Large mechanized harvesting equipment involved in current forest management can inflict damage on residual trees; and can pose a risk of mortality from diseases, natural calamities, and/or degrade future economic value. The primary objective of this study was to evaluate the residual stand damage under different harvesting methods and silvicultural prescriptions i.e., crop tree release (CTR), diameter limit cut (DLC), and overstory removal (OSR). The second objective was to evaluate the intensity and frequency of damage occurring on the bole, canopy, and root at tree and stand level. The third objective was to document strategies adopted globally to minimize stand damage due to timber harvesting. Five harvest blocks implementing three silvicultural prescriptions, were selected as the treatments across two different industrial timberlands in central and northern Maine (Study Site (SS) I and II, respectively). A hybrid cut-to-length (Hyb CTL) and whole-tree (WT) harvesting method were employed for conducting the harvest in SS I and II, respectively. Systematic transect sampling was employed to collect information on type, frequency, and intensity of damages. The inventory captured 41 and 8 damaged trees per hectare with 62 and 22 damages per hectare from SS I and SS II respectively. Bole damage was the most frequent damage across all treatments. The Hyb CTL had lower damage density (damage per ha) and severity compared to WT. The average number of trees damaged per ha was higher for CTR prescriptions compared to DLC. There were no significant differences in the height of the damages from the ground level between treatments within each study site; however, there was a significant difference between the study sites. Species damaged was directly related to the residual trees left behind and was dominated by American beech, yellow birch, sugar maple, and eastern hemlock. Finally, the study provides strategies that can be adopted at different forest managerial phases to mitigate residual stand damage.

scholarly journals DamQuick: A New Method for Rapidly Assessing Residual Stand Damage During Partial Timber Harvests

2003 ◽  
Vol 18 (2) ◽  
pp. 81-87
Author(s):  
H-Sup Han ◽  
Thomas W. Steele ◽  
Loren D. Kellogg
Keyword(s):  
General Pattern ◽  
Timber Harvest ◽  
Accurate Method ◽  
Estimation Errors ◽  
Mean Estimation ◽  
Residual Damage ◽  
The Mean ◽  
Stand Damage ◽  
Actual Damage ◽  
Residual Stand Damage

Abstract The increasing frequency of partial timber harvest prescriptions has created the need for an efficient and accurate method of assessing residual stand damage. In this study, we developed and tested a new sampling method that exploits the general pattern of residual stand damage being concentrated near primary transport routes. The method, termed DamQuick, consists of systematic belt transects located immediately adjacent and parallel to the harvesting operation's extraction corridors. Plot measures of tree wounding are scaled by sampling intensity and a concentration factor to yield stand-level estimates of residual damage. The method was evaluated for a skyline thinning operation in western Oregon. DamQuick damage estimates were compared with actual damage levels obtained from a 100% survey for three thinning treatments—30, 60, and 100 residual trees/ac. The mean DamQuick estimates were statistically similar to actual stand damage levels (t = 0.366–0.651, P = 0.531–0.725) for all thinning treatments, with mean estimation errors (standard errors) ranging from 0.7% (0.9%) to 2.1% (4.4%). Operationally, DamQuick was easy to implement. The primary transport routes provided ready stand access, which facilitated plot location and establishment. West. J. Appl. For. 18(2):81–87.

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

2020 ◽  
Vol 9 (2) ◽  
pp. 121
Author(s):  
Yuniawati Yuniawati ◽  
Dulsalam Dulsalam
Keyword(s):  
Timber Harvesting ◽  
Harvesting Techniques ◽  
Stand Damage ◽  
Residual Stand Damage

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.

Did humans and natural forests coexist in close proximity? A case study of the Lateglacial and Holocene Mollusca in the Moravian Karst, Czech Republic

Boreas ◽  
2019 ◽  
Vol 48 (4) ◽  
pp. 929-939 ◽  
Author(s):  
Lucie Juřičková ◽  
Jitka Horáčková ◽  
Anna Jansová ◽  
Jana Škodová ◽  
Tereza Kosová ◽  
...  
Keyword(s):  
Czech Republic ◽  
Natural Forests ◽  
Close Proximity ◽  
Moravian Karst

scholarly journals THE SUNDANESE ECO-RELIGION KAMPONG OF KASEPUHAN CIPTAGELAR INDIGENOUS LOCAL COMMUNITY: CASE STUDY KAMPONG CENGKUK, SUKABUMI REGENCY

KALPATARU ◽  
2020 ◽  
Vol 29 (1) ◽  
pp. 39-50
Author(s):  
Ary Sulistyo
Keyword(s):  
Local Community ◽  
Rice Cultivation ◽  
Home Garden ◽  
Natural Forests ◽  
Social Culture ◽  
Sustainable Environment ◽  
Outer Island ◽  
The Social ◽  
Internal And External Factors

Abstract. This research focused on eco-religion of indigenous Sundanese local community of Kasepuhan Ciptagelar at Southern Halimun Mountain on how to manage sustainable environment. The Kampong Cengkuk is one of several kampongs that still follow the tradition of indigenous local community of Kasepuhan Ciptagelar for hundred years. This descriptive qualitative research aims to reveal the internal and external factors led to deforestation of natural forests with average around 6-8% per year. The research shows that the kampong is still practicing eco-religion tradition by protecting forestland (leuweung tutupan) only for their subsistence. The hypothesis is that the social-culture changes had been occurred in the community not only to restrict outer island agriculture in the forest, but also, in wet rice cultivation activities, to manage sustainable environment. The reduction in process and ceremonial activities also happened, which was originally eight ceremonies of outer island agriculture rituals into five ceremonies of wet rice cultivation. The more profane activities were developing economic crops in home garden. Keywords: Ecoreligion, Kampong, Environment, Forest, Tradition   Abstrak. Penelitian ini membahas tentang eko-religi masyarakat lokal Sunda Kampung Ciptagelar di Pegunungan Halimun Selatan bagaimana dalam pengelolaan lingkungan keberlanjutan saat ini. Kampung Cengkuk adalah salah satu dari kampung-kampung pengikut tradisi Kasepuhan Ciptagelar selama ratusan tahun. Penelitian dengan menggunakan pendekatan deskriptif-kualitatif ini yang bertujuan untuk mengetahui faktor dari dalam dan luar kampung penyebab deforestasi hutan alam dengan rata-rata sekitar 6-8% per tahun. Hasil penelitian menunjukkan bahwa praktik ekoreligi masih dianut warga kampung dengan menjaga hutan tutupan (leuweung tutupan) untuk kegiatan subsistensi. Hipotesa yang dibangun adalah perubahan sosio-kultur terjadi pada masyarakat dengan membatasi kegiatan berladang di hutan tetapi lebih kepada kegiatan bertani di sawah ladang untuk mengelola lingkungan berkelanjutan. Pengurangan pada proses dan kegiatan upacara, yang semula delapan upacara daur ladang menjadi lima upacara daur sawah. Kegiatan profan lebih banyak pada pengembangan komoditas tanaman ekonomi di kebun-talun. Kata kunci: Ekoreligi, Kampung, Lingkungan, Hutan, Tradisi

scholarly journals Harvest System Selection and Design for Damage Reduction in Noble Fir Stands: A Case Study on the Warm Springs Indian Reservation, Oregon

2003 ◽  
Vol 18 (2) ◽  
pp. 118-126 ◽  
Author(s):  
Peter J. Matzka ◽  
Loren D. Kellogg
Keyword(s):  
High Elevation ◽  
Heterobasidion Annosum ◽  
Indian Reservation ◽  
Commercial Thinning ◽  
Warm Springs ◽  
Abies Procera ◽  
Noble Fir ◽  
Stand Damage ◽  
Warm Springs Indian Reservation ◽  
Residual Stand Damage

Abstract Many high-elevation stands of noble fir (Abies procera) in the northern Oregon Cascades are being actively managed. Forest managers are investigating different activities that will control stand impacts and the subsequent spread of Heterobasidion annosum, a rot pathogen on the Warm Springs Indian Reservation. The purpose of this study was to quantify the relationship between logging production and costs with associated residual stand damage during a commercial thinning operation. Investigated in the study were four ground-based harvesting systems and two different harvest unit layout methods. Harvesting costs for the four different systems and layout methods ranged from $67.75 to $92.66/mbf (thousand board feet), with residual stand damage of 20.1 to 62.6%. Equipment size, log lengths, and layout method were found to affect total residual stand damage. West. J. Appl. For. 18(2):118–126.

Building Consensus on Timber Harvesting in Minnesota: A Decision Case Study

1998 ◽  
Vol 27 (1) ◽  
pp. 1-7
Author(s):  
D. G. MacKay ◽  
M. A. Kilgore ◽  
P. V. Ellefson
Keyword(s):  
Timber Harvesting

scholarly journals An Assessment of Stand Damage Following Timber Harvests in West Virginia

1999 ◽  
Vol 16 (4) ◽  
pp. 191-196 ◽  
Author(s):  
Curt C. Hassler ◽  
Shawn T. Grushecky ◽  
Mary Ann Fajvan
Keyword(s):  
West Virginia ◽  
Basal Area ◽  
Plot Sampling ◽  
Stand Damage ◽  
Residual Stand Damage ◽  
Stand Basal Area ◽  
Timber Harvests

Abstract Fixed plot sampling was used to measure residual stand damage on 101 harvested stands in West Virginia. Damage was categorized for roots, base, bole, and crown components of all trees 4 in. dbh and greater. The level of damage was correlated to both preharvest and residual stand densities. Equations were developed to estimate stand damage, based on preharvest and residual stand basal area and trees per acre. These equations were found to reasonably estimate levels of stand damage from previous studies in partial/selection cuts, but not in thinnings. North. J. Appl. For. 16(4):191-196.

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