진주시에 식재된 은행나무, 느티나무, 왕벚나무의 탄소저장량 추정식에 관한 연구

Abstract

Quantitative evaluation for carbon storage of trees planted in an urban area is important for carbon sequestration management. This study was conducted to develop allometric equations to estimate the carbon storage of three representative urban tree species [Ginkgo biloba Linn., Zelkova serrata (Thunb.) Makino., and Prunus × yedoense Matsum.] planted in Jinju, Gyeongsangnam-do, Korea. Carbon concentrations in tree components were significantly different among three tree species, except for roots and branches. Allometric equations for carbon storage using generalized method of moments with diameter at breast height (DBH) or DBH2 × height (H) as independent variables were significant in all three species with high coefficient of determination (R2 = 0.92 0.99). There was little difference of coefficient of determination and root mean squared errors (RMSE) between allometric equations using DBH and DBH2 × H as independent variables. Generalized allometric equations for foliage, branches and aboveground carbon storage for three tree species were significantly different (P < 0.05) in regression coefficients (slope). These results suggest that the accuracy of estimates for carbon storage of three tree species planted in an urban area could be improved by using species-specific carbon concentration and species-specific allometric equations.