Estimation of Site Index for Larix kaempferi and Pinus koraiensis in Gangwon and North Gyeongsang Provinces

Abstract Site index curves were developed for Larix kaempferi and Pinus koraiensis in Gangwon and North Gyeongsang provinces in Korea. For the development of site index, Schumacher and Chapman-Richards model were applied using the data collected from 2012 to 2014. Base age was set to 40 years for Larix kaempferi and Pinus koraiensis in site index of this study. Coefficient of determination and root mean square error of site index models were provided by species, and the models were compared with the previous studies to check the suitability. Overall, site index models developed in this study fitted in the current data well. Thus, the site indexes are considered to be properly used in Gangwon and North Gyeongsang provinces.Key Words: Schumacher model, Chapman-Richards model, Base age, Dominant tree height Received: August 6, 2015. Revised: August 13, 2015. Accepted: August 13, 2015.Corresponding author: Jungkee ChoiDepartment of Forest Management, College of Forest and Environm ental Sciences, Kangwon National University, Chuncheon 24341, R epublic of KoreaTel: 82-33-250-8337, Fax: 82-33-259-5617, E-mail: jungkee@kangw on.ac.kr