Compared to regressions obtained using the traditional logarithmic transformation method, the above regressions had a much better fit. The original biomass data of the sample trees were also used to calculate the proportion of total biomass apportioned to trunk, branches, leaves and roots. | JOURNAL OF SCIENCE OF HNUE Chemical and Biological Sci. 2013 Vol. 58 No. 9 pp. 91-103 This paper is available online at http ALLOMETRIC RELATIONSHIP AND BIOMASS PARTITION OF Kandelia obovata LIU amp YONG PLANTED IN NAM DINH PROVINCE Pham Hong Tinh1 and Mai Sy Tuan2 1 Mangrove Ecosystem Research Center Hanoi National University of Education 2 Faculty of Biology Hanoi National University of Education Abstract. Measurements were made of 101 Kandelia obovata Liu amp Yong trees growing in Giao Lac Commune Giao Thuy District Nam Dinh Province and based on the diameter cm at 30 cm above the widening of the trunk base allometric regressions were done to estimate the biomass kg of the entire tree above-ground biomass trunk biomass leaf biomass and below-ground biomass found to be W R2 0 86 W R2 0 84 W R2 0 79 W R2 0 63 and W R2 0 73 respectively. Compared to regressions obtained using the traditional logarithmic transformation method the above regressions had a much better fit. The original biomass data of the sample trees were also used to calculate the proportion of total biomass apportioned to trunk branches leaves and roots. While for small trees D 4 cm 20 is leaves 20 is branches 35 is trunk and 25 is roots for larger trees D 10 cm only about 5 is leaves 5 is branches 65 is trunk and 25 is roots. The allometric equations and biomass partition obtained in this study could be used effectively to account for biomass and carbon in Kandelia obovata Liu amp Yong mangroves. Keywords Allometric relationship Kandelia obovata Liu amp Yong Biomass Vietnam. 1. Introduction Mangrove forest is an important ecosystem in tropical and subtropical coastal regions. However this ecosystem is being degraded and damaged at an alarming rate by human activites . land use change unsustainable exploitation and human population increase 6 . Moreover the value of mangrove forests in terms of .
