With an increasing demand of timber production, the use of heavy machinery in forest management has significantly increased, causing the changes of soil physical properties and the decline of long-term site productivity. This study was conducted to evaluate the effects of logging slash and machine passes(Harvester 1 pass & Forwarder 10 passes) on physical properties in harvester and forwarder operations. The results indicated that soil bulk density in the non-slash treatment site increased 10%-29%(25~139% in soil penetration resistance) at all soil depths, compared with the slash treatment site. Therefore, the creation of a slash mat could be an effective way to minimize the changes of soil physical properties. In addition, 90% of total soil compaction in slash treatment site was created within harvester 1 pass and forwarder 5 passes. In non-slash treatment site, 84% of total soil compaction was created within first harvester and forwarder passes.
저자
Sang-Kyun Han [ Department of Forestry, Korea National College of Agriculture and Fisheries ]
Jeong-Hoon Park [ Department of Forestry, Korea National College of Agriculture and Fisheries ]
Jae-Heun Oh [ Forest Practice Research Center, National Institute of Forest Science ]
Ho-Seoung Mun [ Forest Practice Research Center, National Institute of Forest Science ]
Sang-Tae Lee [ Forest Practice Research Center, National Institute of Forest Science ]
Yun-Sung Choi [ Forest Practice Research Center, National Institute of Forest Science ]
Byoung-Koo Choi [ College of Forest & Environmental Sciences, Kangwon National University ]
Corresponding Author