scholarly journals Pengaruh Limbah Pemanenan Kayu Terhadap Efisiensi Pemanfaatan Kayu Hutan Produksi Alam Pada Dua Pengusahaan Hutan di Kalimantan

2018 ◽  
Vol 16 (2) ◽  
pp. 147
Author(s):  
Sona Suhartana ◽  
Yuniawati Yuniawati
Keyword(s):  
Research Result ◽  
Forest Harvesting ◽  
Utilization Efficiency ◽  
Native Forest ◽  
Wood Industry ◽  
Wood Volume ◽  
Wood Supply ◽  
Logging Residue ◽  
Wood Utilization ◽  
Wood Demand

ABSTRAKPotensi limbah akibat pemanenan kayu sampai saat ini masih cenderung tinggi yang dapat menyebabkan rendahnya efisiensi pemanfaatan kayu. Hal ini sebagai kecenderungan pemborosan bahan baku kayu, sedangkan saat ini terjadi ketimpangan antara ketersediaan bahan baku yang terus menurun dengan kebutuhan kayu untuk industri. Tujuan penelitian adalah untuk mengetahui potensi limbah pemanenan kayu pada dua pengusahaan hutan di Kalimantan dan pengaruhnya terhadap efisiensi pemanfaatan kayu. Metodologi penelitian dengan mengukur potensi tegakan, volume kayu yang dimanfaatkan, volume limbah kayu setelah pemanenan kayu, menghitung indeks tebang, indeks sarad dan efisiensi pemanfaatan kayu. Hasil penelitian menunjukkan bahwa: (1). Rata-rata volume kayu yang dimanfaatkan pada IUPHHK-HA PT Karya Lestari (PT A) dan PT Inhutani II (PT B) masing-masing adalah 16,759 m3/pohon dan 6,742 m3/pohon; (2). Rata-rata volume limbah kayu pada PT A dan PT BI masing-masing adalah 2,410 m3/pohon dan 0,472 m3/pohon; (3). Proporsi limbah tunggak, pangkal batang, ujung batang pada PT A dan PT B masing-masing adalah 0%, 81,54%, 18,46% dan 70,25%, 21,78%, 7,97%; (4). Rata-rata efisiensi pemanfaatan kayu pada PT A dan PT B masing-masing adalah 88% dan 86%; dan (5). Pengaruh potensi limbah pemanenan kayu terhadap efisiensi pemanfaatan kayu ditunjukkan dengan model persamaan Y = 0,971 - 0,0341X. ABSTRACTPotential logging residue from forest harvesting operation is significantly high at tree quantities of logging. This reflects in a low efficient of harvesting that may derive wasteful in using forest resources. In the contrary, the wood supply is not equal to wood demand.  The wood supply continously decrease so that it is not able to support the demand of wood industry.  The aim of research is to find out the potential logging residue on forest harvesting operation and its effect on wood utilization at two companies in Kalimantan. Research method used by measuring potential forest standingstock, potensial use of wood volume and logging residue from the harvesting operation. The study also measures felling index, skidding index and efficiency of wood utilization. Research result showed that: (1). Average of wood volume used in IUPHHK- HA PT Karya Lestari (PT A) and Inhutani II (PT B) are consecutively 16.759 m3/tree and 6.742 m3/tree; (2). Average of logging residue PT A and PT B are 2.410 m3/tree and 0.472 m3/tree; (3) The percentage of the logging residue at tha bottom stem, middle stem, and upper stem at PT A are 0%, 81.54%, 18.46% and PT B is about 70.25%, 21.78%, 7.97%; (4). The average of timber utilization efficiency (TUE) at PT A and PT B are 88% and 86%; and (5). The equation derived from the comparation model between the effect of logging residue from forest harvesting operation and efficiency of wood utilization is Y = 0.971 - 0.0341 X.Keywords: forest harvesting, potential of logging residue, efficiency, native forest Sitasi: Suhartana, S dan Yuniawati (2018). Pengaruh Limbah Pemanenan Kayu Terhadap Efisiensi Pemanfaatan Kayu Hutan Produksi Alam Pada Dua Pengusahaan Hutan Di Kalimantan. Jurnal Ilmu Lingkungan, 16(2), 147-154, doi: 10.14710/jil.16.2.147-154.

Impacts of native forest harvesting on flows into the Murray–Darling Basin system

2013 ◽  
Vol 76 (2) ◽  
pp. 91-100 ◽  
Author(s):  
Leon Bren ◽  
Jeya Jeyasingham ◽  
Stuart Davey
Keyword(s):  
Forest Harvesting ◽  
Native Forest ◽  
Murray Darling Basin ◽  
Basin System

Significance Analysis on the Affecting Factors of Basic Reserve Fund in Power Engineering Based on FAT

2014 ◽  
Vol 584-586 ◽  
pp. 2333-2338
Author(s):  
Xue Liang Hou ◽  
Yue Li ◽  
Ying Rong Yang
Keyword(s):  
Research Result ◽  
Fault Tree Analysis ◽  
Reference Value ◽  
Power Engineering ◽  
Utilization Efficiency ◽  
Engineering Practice ◽  
Affecting Factors ◽  
Analysis Model ◽  
Significance Analysis ◽  
Reserve Fund

Basic reserve fund is a part of the power engineering total cost. Reducing its quantity can obviously increase the utilization efficiency of engineering cost. But how can reduce the quantity of basic reserve fund, we can start from its affecting factors. To this, for the affecting factors of basic reserve fund, this paper constructed the significance analysis model about affecting factors based on its actual application situation and Fault Tree Analysis (FAT). Finally, we got the degree and prior about affecting factors of basic reserve fund. Thereby the empirical research result provided a theory reference value which can control the quantity of basic reserve fund in the engineering practice.

scholarly journals EFFECTS OF UTILIZATION DEVELOPMENTS AND TRENDS ON THE FOREST

1957 ◽  
Vol 33 (2) ◽  
pp. 109-109
Author(s):  
R. W. B. Thomson
Keyword(s):  
Forest Products ◽  
Paper Mill ◽  
Forest Harvesting ◽  
Future Generations ◽  
Weed Species ◽  
Paper Company ◽  
Wood Utilization ◽  
Forestry Services ◽  
Government Legislation ◽  
Time And Energy

In the last 10 years, I would venture to say, we foresters in the woods industries and governmental forestry services, have seen more developments in forest harvesting methods, wood handling, transportation methods, woods workers' living conditions, and in wood utilization than have been witnessed in the previous 100 years of logging history. Reflect for a moment on some of the more obvious changes of the last 10 years—woods workers and their families living comfortably on the job; power saws superseding bucksaws; tractors and trucks replacing horses; and former nuisance or weed species of trees becoming more useful and therefore more valuable. These are but a few of the changes which we have seen in the last few years.The developments of which I speak are not local ones by any means. This march of progress exists from one end of Canada to the other and I believe that this greatly accelerated progress is causing a degree of confusion in the minds of many foresters who are responsible for the proper management of our forests so as to ensure a continued supply of forest products for future generations of Canadians.The existence of this confusion is illustrated by the fact that while in one part of Canada it is apparently necessary to have Government legislation to ensure sawmills a supply of sawlogs from pulp and paper company cutting operations, in another part of Canada private enterprise has seen fit to invest millions of dollars in a paper mill to be run almost entirely on waste from sawmill operations. Without a doubt foresters played their part in formulating and guiding both of these plans of action.Many surveys and calculations were undoubtedly carried out by Company foresters before a pulpmill was established on the basis of using sawmill and sawlog operation waste. Similarly much time and energy were probably spent by highly placed Government foresters before advising their Parliament of the necessity of enacting legislation to ensure the production of sawlogs on pulp cutting operations thus apparently condoning "wasteful practices" or at least poorer utilization than if the togs were produced as pulpwood.

The System of Two-Phased Pyrogenation and Gasification Waste Incinerator

2005 ◽  
Author(s):  
Zheng-Mi Li ◽  
Ze-Peng Chen
Keyword(s):  
Energy Saving ◽  
Research Result ◽  
Energy Utilization ◽  
Utilization Efficiency ◽  
Waste Incinerator ◽  
Environment Friendly ◽  
Economic Result ◽  
Secondary Pollution ◽  
Industrial Use ◽  
Air Control

A novel environment-friendly energy-saving waste disposing equipment — the Two-phased Pyrogenation and Gasification Waste Incinerator (TPGI) is introduced. Basing on the study on the cause of dioxins forming and the mechanism to inhibit such forming, the mechanism of pyrolyzing-gasifying and combustion air control, a two-phased pyrogenation and gasification waste incinerator is successfully developed. Principle of operation of TPGI is emphatically analyzed, process steps of TPGI and the result of industrial use is presented. Research result shows that the TPGI is complete in combustion, free of secondary pollution, high in energy utilization efficiency, environment-friendly, of obvious economic result and of wide application prospect.

scholarly journals UNDERSTANDING THE DYNAMICS OF THE BRAZILIAN MARKET FOR NATIVE FOREST WOOD: A CASE STUDY FOR MINAS GERAIS STATE, BRAZIL

2021 ◽  
Vol 45 ◽  
Author(s):  
Thales Guilherme Vaz Martins ◽  
Geraldo Gonçalves dos Reis ◽  
Maria das Graças Ferreira Reis ◽  
Rodrigo Vieira Leite ◽  
Lucas Arthur de Almeida Telles ◽  
...  
Keyword(s):  
Supply And Demand ◽  
Solid Wood ◽  
Minas Gerais ◽  
Wood Products ◽  
Native Forest ◽  
Distribution Centers ◽  
Essential Information ◽  
Mato Grosso ◽  
Wood Supply ◽  
Belo Horizonte

ABSTRACT Understanding the Brazilian market for native wood helps forest managers and can guide conservation policies. This study aimed to evaluate the spatial and temporal distribution of supply and demand of the Brazilian native wood for four products namely, charcoal, roundwood, firewood, and sawn wood. We used the consumed wood volume from 2006 to 2016 in Minas Gerais (MG) tracking its supplier in Brazil accounting for 31 million cubic meters. These data were used as input for calculating mean centers and performing grouping analysis. The wood supply centers for the energy sector in Brazil have moved from Cerrado to the Caatinga biome. This change is consistent with historical patterns of agricultural expansion in Brazil. The largest mesoregions producing wood were: East of Mato Grosso do Sul State, South of Goiás State, and Center-South of Bahia State. The solid wood supply centers have moved from the North to Midwest regions but remained within the Amazon biome for almost all the years. This pattern is likely a consequence of timber regulation practices in the Amazon. The mesoregions: Madeira-Guaporé and East of Rondônia State, Southeast and Northeast of Pará State, and North of Mato Grosso State were the most important suppliers of solid wood to MG. Wood consumption for energy is centered in the Center and North regions of MG State, especially in Sete Lagoas, a hub of pig iron and cement industries. Solid wood products are dispersed in MG State, being Belo Horizonte, Conselheiro Lafaiete, Ubá, and Uberlândia the distribution centers of native wood for the furniture industry within MG. The spatial statistics helped to exploit the activity of the native wood market in Brazil and provides essential information for decision-makers that was not previously available.

scholarly journals Wood utilization efficiency and acceptability of fried and smoked fish from Lake Malawi

2019 ◽  
Vol 19 (02) ◽  
pp. 14432-14457
Author(s):  
Zione Makawa ◽  
◽  
E Kaunda ◽  
Fanuel Kapute ◽  
◽  
...  
Keyword(s):  
Lake Malawi ◽  
Utilization Efficiency ◽  
Smoked Fish ◽  
Wood Utilization

scholarly journals Avaliação nutricional da candiúva (Trema micrantha L. Blumes) em casa de vegetação

FLORESTA ◽  
1999 ◽  
Vol 29 (12) ◽  
Author(s):  
NELSON VENTURIN ◽  
PATRÍCIA APARECIDA DE SOUZA ◽  
REGIS PEREIRA VENTURIN ◽  
RENATO LUIZ GRISI DE MACEDO
Keyword(s):  
Dry Matter ◽  
Height Growth ◽  
Diameter Growth ◽  
Native Forest ◽  
Forest Fertilization ◽  
Wood Volume ◽  
Matter Production ◽  
Complete Treatment ◽  
Nutrients Availability ◽  
Trema Micrantha

Estudos recentes demonstram que a fertilização de espécies florestais melhora a produtividade das florestas plantadas. Os conhecimentos científicos sobre fertilização de espécies nativas, no entanto, são escassos. Com o objetivo de avaliar os aspectos nutricionais e os efeitos da falta de nutrientes no desenvolvimento de plântulas de candiúva (Trema micrantha), foi conduzido um experimento em casa de vegetação, em substrato de Latossolo Vermelho-Amarelo de baixa fertilidade. Foram utilizados 10 tratamentos dispostos em delineamento de blocos inteiramente casualizados, com cinco repetições e uma planta por vaso, usando-se a técnica do elemento faltante. Foi aplicado um tratamento completo com (N, P, K, Ca, Mg, S, B e Zn), outros oitos com omissão de um nutriente por vez (-N, -P, -K, Ca, -Mg, -S, -B e -Zn) e um como testemunha (solo natural). Foram avaliadas as seguintes característica aos 110 dias do plantio: diâmetro do colo, altura da parte aérea e produção de matéria seca. Concluiu-se que para o crescimento em altura o nutriente mais limitante foi o N e para o diâmetro foram N, P e B. A matéria seca da parte aérea e radicular foi reduzida com a omissão de N, P e B. O tratamento completo afetou o desenvolvimento da candiúva devido a toxidez do nutriente Zinco. Nutritional evaluation of seedlings of candiuva (Trema micrantha) growth in greenhouse conditions Abstract Recent studies have shown that fertilization of tree epecies seedlings increases wood volume of forest plantations. However, scientific knoledge about native forest fertilization is still scarse. In order to study nutritrional aspects and lack of nutrients on the development of plants, a greenhouse experiment was carried out with seedlings of candiuva (Trema micrantha). As substrate an oxisol with low nutrients availability was used and distributed in 10 treatments: a complete one (N, P, K, Ca, Mg, S, B and Zn), the others lacking one element in each treatment (-N, -P, -K, -Ca, -Mg, -B and –Zn) and a control (natura soil). The following characteristics were assessed: diameter growth, plant height and dry matter production. It was concluded that height growth was affected by lack of N. Diameter growth, however, was affected by lack of N, P and B. The complete treatment affected seedlings development due to the toxicity of Zn. The lack of B affected the diameter growth of Trema micrantha seedlings.

Trial Radio-tracking of Feather-tailed Gliders Acrobates pygmaeus

2000 ◽  
Vol 22 (2) ◽  
pp. 129 ◽  
Author(s):  
M Johnston ◽  
M Shaw
Keyword(s):  
Animal Species ◽  
Management Strategies ◽  
Tail Length ◽  
Forest Harvesting ◽  
Home Range Size ◽  
The Other ◽  
Habitat Requirements ◽  
Native Forest ◽  
Radio Tracking ◽  
History Of

ALTHOUGH possibly one of Australia?s commonest gliders, little is known about the den requirements or home range size of the feathertail glider Acrobates pygmaeus. This is not surprising given the inherent difficulties involved in detecting these small gliders (Henry 1995, Ward 2000); head and body length 65 - 80 mm, tail length 70 - 80 mm, weight 10 - 14 g (Woodside 1995). Although aspects of the life history of this species have been studied (Ward 1990) some of the information that will assist the formulation of management strategies for conserving this species is lacking. Gibbons and Lindenmayer (1996, 1997) stressed the importance of considering all hollowdependent wildlife when devising management strategies pertinent to the protection of animal species during native forest harvesting. On the other hand, Goldingay and Kavanagh (1995) suggest that the habitat requirements of A. pygmaeus can probably be secured through management strategies developed to conserve other forest mammals.

scholarly journals RESEARCH ON THE IMPACT OF DIGITAL FINANCE ON CORPORATE FINANCIAL FLEXIBILITY UNDER THE BACKGROUND OF THE NEW DEVELOPMENT PATTERN OF "DOUBLE CYCLES"

2021 ◽  
Author(s):  
FENG-XIN ZHU ◽  
YU-FANG DING ◽  
YA-MING ZHAO
Keyword(s):  
Resource Utilization ◽  
Stock Markets ◽  
Research Result ◽  
Utilization Efficiency ◽  
Development Pattern ◽  
Manufacturing Companies ◽  
Financial Flexibility ◽  
New Development ◽  
The Impact ◽  
Resource Utilization Efficiency

This paper selects 2013-2018 data of A-share manufacturing companies in Shanghai and Shenzhen stock markets as samples, and uses the method of double differentiation to study the impact of the policy of promoting the development of digital finance on the level of corporate financial flexibility under the background of the new development pattern of "double cycles". The research result shows that after the promotion of digital finance, the level of corporate financial flexibility has been significantly reduced. Finally, based on the above conclusions, this article puts forward relevant suggestions for enterprises and governments to improve resource utilization efficiency and rationally guide the development of digital finance.

scholarly journals Analysis of Flexural Strength Test Results of Coconut Fiber and Corn Husk Composite for Hanging Rack

2020 ◽  
Vol 7 (1) ◽  
pp. 45
Author(s):  
Syamsul Hadi ◽  
Bangkit Agung Sudrajat
Keyword(s):  
Flexural Strength ◽  
Polyester Resin ◽  
Strength Test ◽  
Size Analysis ◽  
Test Results ◽  
Coconut Fiber ◽  
Wood Industry ◽  
Standard Size ◽  
Corn Husk ◽  
Wood Demand

The wood demand for construction, buildings and furniture is always increasing, while the availability of wood continues to decline with the growth of the wood industry. The purpose of this study was to determine the best flexural strength of the variation of composite board resin material with filler fibers of Coconut Fiber and Corn Husk (CFCH) with comparative specimens of particle boards and Sengon wood. Preparation of composite specimens from Yucalac 157 BQTN-EX polyester resin type added by CFCH fillers with different weight fractions, composite specimens were made accordance with ASTM-D 7264 standard size. Analysis of test data using One-wayAnova  approach. The best percentage results on the composition of the weight of the hanging rackcomposite with the ratio of filler CFCH was 4.5%: 4.5% (1: 1) with 91% hardener resin, and the weight fractions of CFCH was affected to the flexural strengthcomposite, because Fcalculated> Ftable (15.05 > 5.14).

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