scholarly journals Determination of the optimal density of the forest road network

2019 ◽  
Vol 65 (No. 11) ◽  
pp. 438-444 ◽  
Author(s):  
Tihomir Krumov
Keyword(s):  
Road Network ◽  
Good Condition ◽  
National Average ◽  
Network Density ◽  
Primary Forest ◽  
Optimal Density ◽  
Forest Road ◽  
Financial Difficulties ◽  
State Educational

The forest road network is invariably linked to forestry and logging, as it transports logging products and products needed for forestry activities. Constructing and maintaining it in good condition are essential. In view of the economic situation in the country and the financial difficulties faced by forest holdings in the construction and maintenance of the forest road network, it is necessary to determine the optimal hauling distance and the optimal density of the primary forest road network. The analysis of the forest road network in the territory of the State Educational Experimental Forestry Enterprise “Georgi Avramov”, Yundola village, showed that the density of the primary forest road network is several times higher than the national average, namely 20.31 m'·ha–1, yet it does not reach the optimal road network density calculated at the farm, of 30.9 m'·ha–1, at a hauling distance of 323.15 m.<br /><br />

scholarly journals Development and perspective of the forest road infrastructure in the Republic of Macedonia

2015 ◽  
pp. 141-148
Author(s):  
Zdravko Trajanov ◽  
Ljupcho Nestorovski ◽  
Pande Trajkov
Keyword(s):  
Forest Management ◽  
Historical Development ◽  
Road Network ◽  
Scientific Research ◽  
Ecological Functions ◽  
Forest Roads ◽  
Optimal Density ◽  
Forest Road ◽  
Republic Of Macedonia ◽  
The Republic

This paper determines the historical development of infrastructure in the forest, streaming the development of the forest road network as a dominant element of infrastructure. The paper also covers the current condition with the openness of forests in Republic of Macedonia. On the basis of scientific research, the results from the optimal density of forest roads are determined. The paper also covers the period for which it is expected to achieve the goals of optimization which is the most efficient forest management without significantly affecting the ecological functions of the forest.

scholarly journals Assessment of the state of a forest road network as a basis for making a program of forest management unit opening

2014 ◽  
pp. 59-71
Author(s):  
Milorad Danilovic ◽  
Dusan Stojnic
Keyword(s):  
Road Network ◽  
The State ◽  
M Cell ◽  
Buffer Zones ◽  
Management Units ◽  
Forest Roads ◽  
Forest Road ◽  
Cell Dimensions ◽  
Absolute Density

The planning of a forest road network is preceded by a detailed analysis of the current qualitative and quantitative state of forest roads, and above all, the determination of their spatial layout. This paper presents a categorization and assessment of the state of the existing roads in the FMUs "Zeljin" and "Bukovik II" and defining of the parts of management units with insufficiently developed networks of forest roads. The identification of unopened and insufficiently opened parts of management units was performed on the basis of density of a forest road network by departments and using a fishnet with 500 x 500 m cell dimensions and buffer zones of different widths around forest roads. The absolute density of a forest road network in the FMU "Zeljin" is 18.62 m/ha and in the FMU "Bukovik II" 12.03 m/ha. After placing buffer zones around forest roads, it was found that in the FMU "Zeljin" over 56% of the area is covered by the zone ranging from 0 to 200 m, while in the FMU "Bukovik II" this zone covers 48% of the area.

scholarly journals Correlation of forest road network density and the production of forest assortments in Serbia in the period 1991-2000

2003 ◽  
pp. 187-195
Author(s):  
Bogdan Stefanovic ◽  
Nenad Rankovic
Keyword(s):  
Road Network ◽  
Forest Products ◽  
Network Density ◽  
Total Production ◽  
Forest Road ◽  
Round Wood

The dependence of the scope of production of the definite forest products (total felling volume, round wood, cordwood, felling waste, waste percentage) in Serbia was analyzed for the period 1991-2000, in relation to the changes of forest road network density. It was concluded that, with the change of forest road network density, the total felling volume, round wood and cordwood decreases, while the quantity of felling waste and its percentage in the total production are not in correlation. This is opposite to the expected which points to the paradox in these relations in the study period.

scholarly journals Calculating the correction factor of skidding distance based on forest road network

2011 ◽  
Vol 57 (No. 11) ◽  
pp. 467-471 ◽  
Author(s):  
M. Lotfalian ◽  
E.H. Zadeh ◽  
S.A. Hosseini
Keyword(s):  
Correction Factor ◽  
Road Network ◽  
Road Density ◽  
Forest Road ◽  
The Road ◽  
Topographical Map ◽  
Arc Gis ◽  
The Mean ◽  
Gis Software

&nbsp; Average skidding distance for forest stands is an important parameter for the determination of the optimum road density and spacing. In this research the real mean skidding distance and theoretical mean skidding distance were measured to calculate the correction factor of skidding distance for Chafrood forest in Hyrcanian zone. The length and azimuth of skid trails from road and depot junction to forest interior were measured. Moreover, the position of skid trail was recorded by GPS. These skid trails with a buffer of 140 m were designed on a topographical map using Arc GIS software. Results indicated that the road spacing of 500 m in the study area resulted in a theoretical mean skidding distance of 125 m. For a real mean skidding distance of 525.9 m and for the mean slope of 40%, the correction factor was estimated to be 4.2.

scholarly journals   Determination of correction coefficient of average skidding distance according to the existing road network in Alikia Soltan forest of Iran  

2013 ◽  
Vol 59 (No. 12) ◽  
pp. 475-478
Author(s):  
M. Rezaei ◽  
F. Shafizade ◽  
M.A. Rezaei
Keyword(s):  
Road Network ◽  
Correction Coefficient ◽  
Hyrcanian Forest ◽  
Topographic Map ◽  
Road Density ◽  
Forest Roads ◽  
Forest Road ◽  
Average Slope

One of the factors in planning forest roads is average skidding distance which is calculated in projects from the map, according to forest road density, however it has a low accuracy. In this study real average skidding distance and theoretical average skidding distance were measured to determine a correction coefficient in Alikia Soltan forest in Hyrcanian forest. In this study real average skidding distance was obtained by putting a meter on the axes of trails. Moreover, theoretical average skidding distance was calculated by means of road density according to the formula. Skid trails were recorded by GPS and overlaid to a topographic map by means of ArcGIS software. Results indicated that for the study area with the average slope of 27% and road density of 10.32 the correction coefficient is 2.1.

Effective Factors in Determination Optimal Density of Forest Road Network

2008 ◽  
Vol 1 (4) ◽  
pp. 470-475
Author(s):  
Majid Lotfalian ◽  
Yahya Kooch ◽  
Nosratollah Sarikhani
Keyword(s):  
Road Network ◽  
Optimal Density ◽  
Forest Road ◽  
Effective Factors

Optimal Density Determination of Bouguer Anomaly Using Fractal Analysis (Case of study: Charak area,IRAN)

2005 ◽  
Vol 1 (1) ◽  
pp. 21-24
Author(s):  
Hamid Reza Samadi
Keyword(s):  
Surface Roughness ◽  
Fractal Dimension ◽  
Fractal Analysis ◽  
Fractal Geometry ◽  
Host Rock ◽  
Bouguer Anomaly ◽  
Research Area ◽  
Density Difference ◽  
Optimal Density

In exploration geophysics the main and initial aim is to determine density of under-research goals which have certain density difference with the host rock. Therefore, we state a method in this paper to determine the density of bouguer plate, the so-called variogram method based on fractal geometry. This method is based on minimizing surface roughness of bouguer anomaly. The fractal dimension of surface has been used as surface roughness of bouguer anomaly. Using this method, the optimal density of Charak area insouth of Hormozgan province can be determined which is 2/7 g/cfor the under-research area. This determined density has been used to correct and investigate its results about the isostasy of the studied area and results well-coincided with the geology of the area and dug exploratory holes in the text area

Financial Statement Ratio Analysis to Predict Bankruptcy nn Company Registered in BEI - Jakarta (Altman Z-Score Method and Zmijewski)

2020 ◽  
Vol 3 (3) ◽  
pp. 122
Author(s):  
Andi Silvan
Keyword(s):  
Financial Distress ◽  
Stock Exchange ◽  
Good Condition ◽  
Financial Statement ◽  
Depth Information ◽  
Z Score ◽  
Industrial Manufacturing ◽  
Financial Difficulties ◽  
A Value ◽  
Score Method

AbstractThis study takes the topic of predicting corporate bankruptcies. This research dqlam use traditional methods Altman Z-Score and Zmijewski. The purpose of this study was to obtain in-depth information about predicting bankruptcy of companies that are not necessarily directly to bankruptcy, but there is financial distress.Based on the results of research conducted on the four (4) non industrial manufacturing company listed on the Indonesia Stock Exchange (BEI). Obtaining the value z-score represents the average company are in good condition, which means no financial distress. Acquisition value of x-score has a value of less than 0 (zero) which means that the company is in good condition and is predicted not experiencing financial difficulties. This study led to the conclusion that the Altman Z-Score and Zmijewski method can be used to predict corporate bankruptcy. Keywords: Financial Ratios, Bankruptcy, Company.

Optimales Layout einer Walderschliessung

2016 ◽  
Vol 167 (5) ◽  
pp. 294-301
Author(s):  
Leo Bont
Keyword(s):  
Road Network ◽  
Spatial Arrangement ◽  
Problem Situation ◽  
Optimal Layout ◽  
Forest Road ◽  
The Road ◽  
Network Cost ◽  
User Friendly ◽  
Short Time

Optimal layout of a forest road network The road network is the backbone of forest management. When creating or redesigning a forest road network, one important question is how to shape the layout, this means to fix the spatial arrangement and the dimensioning standard of the roads. We consider two kinds of layout problems. First, new forest road network in an area without any such development yet, and second, redesign of existing road network for actual requirements. For each problem situation, we will present a method that allows to detect automatically the optimal road and harvesting layout. The method aims to identify a road network that concurrently minimizes the harvesting cost, the road network cost (construction and maintenance) and the hauling cost over the entire life cycle. Ecological issues can be considered as well. The method will be presented and discussed with the help of two case studies. The main benefit of the application of optimization tools consists in an objective-based planning, which allows to check and compare different scenarios and objectives within a short time. The responses coming from the case study regions were highly positive: practitioners suggest to make those methods a standard practice and to further develop the prototype to a user-friendly expert software.

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