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http://dx.doi.org/10.5532/KJAFM.2021.23.1.46

The Analysis of Forest Fire Fuel Structure Through the Development of Crown Fuel Vertical Distribution Model: A Case Study on Managed and Unmanaged Stands of Pinus densiflora in the Gyeongbuk Province  

Lee, Sun Joo (Div. of Forest Disaster Management, National institute of Forest Science)
Kwon, Chun Geun (Div. of Forest Disaster Management, National institute of Forest Science)
Kim, Sung Yong (Div. of Forest Disaster Management, National institute of Forest Science)
Publication Information
Korean Journal of Agricultural and Forest Meteorology / v.23, no.1, 2021 , pp. 46-54 More about this Journal
Abstract
This study compared and analyzed the effects of forest tending works on the vertical distribution of wildfire fuel loads on Pinus densiflora stands in Gyeongbuk province. The study sites were located in Youngju and Bonghwa in Pinus densiflora stands. A total of 10 sample trees were collected for the development of the crown fuel vertical distribution model. The 6th NFI (National Forest Inventory) selected a sample point that only extracted from managed and unmanaged stands of Pinus densiflora in the Gyeongbuk province. The fitness index (F.I.) of the two models developed was 0.984 to 0.989, with the estimated parameter showing statistical significance (P<0.05). A s a results, the vertical distribution of wildfire fuel loads range of unmanaged stands was from 1m to 11m with the largest distribution at point 5m at the tree height. On the other hand, the vertical distribution of wildfire fuel loads range of the managed stands was from 1m to 15m with the largest distribution at the point of 8m at the tree height. The canopy bulk density was 0.16kg/㎥ for the managed stands and 0.25kg/㎥ for the unmanaged stands, unmanaged stands were about 1.6 times more than managed stands. This result is expected to be available for simulation through the implementation of the 3D model as crown fuel was analyzed in three dimensions.
Keywords
Crown fuel; Forest tending works; Pinus densiflora; Vertical distribution;
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