Studies on the Biomass of Mangrove Plantation of Sonneratia apetala and Bruguiera gymnorrhiza in the Wetland of Nansha in Guangzhou City
The biomass of six-year-old Sonneratia apetala Buch-Ham. And Bruguiera gymnorrhiza (L. ) Lamk. Pure plantation in Nansha were surveyed with both the correlative growth method and the mean sample tree method. The result showed that the biomass of S. Apetala was 1 146. 08 t . Hm-2, in which the aerial part was 869. 17 t . Hm-2 and the underground part was 276.91 t hm-2; the biomass of the trunk was 473. 79 t . Hm-2, which was accumulated as the highest biomass and took up 41. 3% of the total. The biomass distribution among organs was in the order of trunk > branch > root > bark > flower and fruit > leaf. The biomass of B. Gymnorrhiza was 55. 51 t . Hm-2, in which 40. 62 t . Hm-2 for the aerial part and 14. 89 t . Hm-2 for the underground part, and the biomass distribution among organs was in the order of trunk > root > branch > leaf. The average net productivity of S. Apetala was 191.02 t . Hm-2. A-1 and the average net productivity of B. Gymnorrhiza was 9. 26 t . Hm-2.a-1. As the population age and initial density of plantation are taken into consideration, both the biomass and productivity of six-year old S. Apetala were higher.
NETL
NSTL
万方数据
维普
