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http://dx.doi.org/10.5141/JEFB.2011.023

Carbon and nitrogen status in litterfall of a red pine stand with varying degrees of damage from pine wilt disease  

Kim, Choon-Sig (Department of Forest Resources, Gyeongnam National University of Science and Technology)
Jeong, Jae-Yeob (Department of Forest Resources, Gyeongnam National University of Science and Technology)
Cho, Hyun-Seo (Department of Forest Resources, Gyeongnam National University of Science and Technology)
Lee, Kwang-Soo (Southern Forest Research Center, Korea Forest Research Institute)
Park, Nam-Chang (Southern Forest Research Center, Korea Forest Research Institute)
Publication Information
Journal of Ecology and Environment / v.34, no.2, 2011 , pp. 215-222 More about this Journal
Abstract
We evaluated the carbon (C) and nitrogen (N) status of litterfall in a natural red pine (Pinus densiflora) stand damaged by pine wilt disease in Jinju City, which was one of the areas severely affected by the disease in Korea. A significant correlation (P < 0.05) was found between tree density and basal area and the C and N status of litterfall components, but C and N status was not correlated with mean diameter at breast height in the pine wilt disease stands. Needle-litter C and N concentrations were linearly related (P < 0.05) to basal area in pine wilt disease stands. Needle-litter C concentration decreased with a decrease in damage intensity due to pine wilt disease, whereas litter N concentration increased with an increase of basal area in pine wilt disease stands. The linear regression equations developed for litterfall C and N inputs were significant (P < 0.05), with basal area accounting for 50-86% of the variation, except for cone and flower litter. The results indicated that the incidence of pine wilt disease could impact the quality and quantity of C and N in litterfall of pine stands suffering from pine wilt disease.
Keywords
carbon cycle; nitrogen cycle; pine wilt disease; red pine;
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