ROAD NETWORK PLANNING AND SELECTION OF HARVESTING MACHINES AT

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EGHTESADI ALI; SOBHANI H.; RAFATNIA N.A.

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Journal: Iranian Journal of Forest and Poplar Research Year:2003 | Volume:11 | Issue:1 Page(s): 95-132

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Title

ROAD NETWORK PLANNING AND SELECTION OF HARVESTING MACHINES AT "VAZ" EXPERIMENTAL FOREST

Author(s)

EGHTESADI ALI | SOBHANI H. | RAFATNIA N.A. | Issue Writer Certificate

Keywords

ROAD NETWORKQ2

ROAD DENSITYQ4

WOOD TRANSPORTATIONQ3

SLOPEQ4

SOIL MECHANICS AND STABILITYQ4

Abstract

Regarding to the importance of ROAD NETWORK in Forest Management, WOOD TRANSPORTATION and Forest operation, this investigation was carried out in four districts of "Vaz" experimental Forest. The study area was 4081 hectares. The forest network planning was based on essential factors such as length of roads, length density of roads, wood transport distance in forest, network percentage, SLOPE, soil mechanics, soil stability, volume of wood production and climatic factors. Three stages were considered to achieve these goals: In the first stage, existing roads were evaluated and recorded. The results were as follow: Length of roads: 21770 m, length density of roads: 7.8 m/ha and network percentage: 37 Due to unacceptable of the existing network, in the second stage forest network planning (Major roads and Minor roads) was performed based on the important factors mentioned above to obtain optimal road coverage and to reduce forest damages. In the third stage, new ROAD NETWORK was planned for each district and marked on its natural site, based on the factors mentioned above. The new ROAD NETWORK characteristics were as follow: Length of roads: 52469 m, length density of roads: 12.8 m/ha and percentage of network: 60 The soil mechanics test showed that soil is generally heavy textured with low plastic limit and high liquid limit. The result showed that although road length density was increased but percentage of ROAD NETWORK was not expanded, because steep areas of the forest was a limiting factor for major ROAD NETWORK. For this reason, secondary ROAD NETWORK was designed to complete the total road cover. As a result, the total length and density of the planned roads were 74459m and 19.5 m/ha, respectively. The density and percentage of minor ROAD NETWORK in series 1,2 and3 were appropriate and covered a desirable area of the forest. Slope was an important factor in major and minor road planning. Only 43% of the roads were located on the best class of SLOPE (O-30%).The logging roads were located on 62% of the forest ground with moderate mechanical class of soil. Soil stability and climatic factors had important roles in logging road planning. In district 2, the SLOPE was suitable but the soil stability was a limiting factorin logging road construction all over its area. As a result, cable crane system should be applied to transport logs outside the forest. The soil mechanics test showed that soil is generally heavy textured with low plastic limit and high liquid limit.

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APA: Copy

EGHTESADI, ALI, SOBHANI, H., & RAFATNIA, N.A.. (2003). ROAD NETWORK PLANNING AND SELECTION OF HARVESTING MACHINES AT "VAZ" EXPERIMENTAL FOREST. IRANIAN JOURNAL OF FOREST AND POPLAR RESEARCH, 11(1), 95-132. SID. https://sid.ir/paper/111279/en

Vancouver: Copy

EGHTESADI ALI, SOBHANI H., RAFATNIA N.A.. ROAD NETWORK PLANNING AND SELECTION OF HARVESTING MACHINES AT "VAZ" EXPERIMENTAL FOREST. IRANIAN JOURNAL OF FOREST AND POPLAR RESEARCH[Internet]. 2003;11(1):95-132. Available from: https://sid.ir/paper/111279/en

IEEE: Copy

ALI EGHTESADI, H. SOBHANI, and N.A. RAFATNIA, “ROAD NETWORK PLANNING AND SELECTION OF HARVESTING MACHINES AT "VAZ" EXPERIMENTAL FOREST,” IRANIAN JOURNAL OF FOREST AND POPLAR RESEARCH, vol. 11, no. 1, pp. 95–132, 2003, [Online]. Available: https://sid.ir/paper/111279/en

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