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http://dx.doi.org/10.14578/jkfs.2013.102.4.515

Comparison of Competition Indices by Silvicultural Systems Before and After Treatments for Natural Deciduous Forests in Pyeongchang  

Choi, Hyun Kwon (Department of Forest, Environment, and System, Kookmin University)
Park, Byung Bae (Division of Forest Ecology, Korea Forest Research Institute)
Sung, Joo Han (Division of Forest Ecology, Korea Forest Research Institute)
Shin, Man Yong (Department of Forest, Environment, and System, Kookmin University)
Publication Information
Journal of Korean Society of Forest Science / v.102, no.4, 2013 , pp. 515-521 More about this Journal
Abstract
The objective of this study was to estimate the changes of stand structure before and after applying the three different silvicultural treatments such as selection cutting system, two-storied system, and shelterwood system. This study has been conducted in the natural deciduous forests in Pyeongchang of Gangwon Province, Korea. Nine permanent sampling plots of 0.09 ha were established in the forests and each of the three silvicultural treatments was applied to three sampling points. Some tree variables were measured in each stand before and after the silvicultural treatments were applied. With these data, stand attributes were estimated in each stand before and after applying the silvicultural treatments. In this study, a competition index was used to analyze the differences among structures of stands managed by three different silvicultural treatments. Hegyi's distance-dependent competition index was estimated and compared to analyze the differences of stand structures among the stands before and after silvicultural treatments. A method using a height angle $50^{\circ}$ from the base of the subject tree was adopted as the selection method of competitor trees. Duncan's multiple range test and t-test were then employed to statistically analyze the difference of stand structure among the stands. The results revealed that competition status among trees in the stand seems to be improved after applying the silvicultural treatments. There are significant differences in the competition index between before and after silvicultural treatments for each stand. According to the evaluation of competition index, it was confirmed that spatial structure of the stands was improved by applying the silvicultural treatments.
Keywords
natural deciduous forest; stand structure indices; selection cutting system; two-storied system; shelterwood system;
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