蓮華池巨竹林之林分結構與地上部生物量

Growth and Aboveground Biomass of Giant Bamboo (Dendrocalamus giganteus) in Lien-Hua-Chih Area

陳財輝(Tsai-Huei Chen) ； 汪大雄(Dar-Hsiung Wang) ； 謝忠穎(Chung-Yin Hsieh)

《林業研究季刊》 36卷1期 (2014/03) Pp. 67-76

摘要

This paper reports the stand structure and biomass on giant bamboo forest in Lien-Hua-Chih Area at the period of 2012 and 2013. The results resulted showed that the bamboo forest was dominated by culms with age over 4 years at both 2012 and 2013, and the culms at DBH between 14 and 16 cm were most abundant in diameter distribution. The average of clump size was 4.5 m^2 clump^(-1), and 400 clumps ha^(-1) was in average which covers 17.8 % of total bamboo land. The culms density was 4,433, 4,867 culms ha-1 at 2012 and 2013, respectively. At 2012, the average of DBH, total height and the height to crown base was 14.3 cm, 17.5 m and 7.2 m, respectively, and 14.3 cm, 17.5 m and 7.2 m at 2013. In the biomass above ground, at 2012, the total biomass was 155.1 ton ha^(-1) with the components that culms biomass was 129.0 ton ha^(-1), branch biomass 17.6 ton ha^(-1), and leaf biomass 8.5 ton ha^(-1). The same figures at 2012 was 155.8 ton ha^(-1) in total biomass, 129.8 ton ha^(-1) in culms biomass, 16.7 ton ha^(-1) in branch biomass and 7.7 ton ha^(-1) in leaf biomass. In regard to new culms, the average of new culms was 433.3 culms ha^(-1) with the average of DBH 15.4 cm, average of total height 19.6 m, the average of height to crown base 19.0 m. The average ratio of new culms was about 9.8 %. Finally, the total biomass above ground for new culms was 10.9~20.9 ton ha^(-1), with the components that culms biomass was 12.9 ton ha^(-1), branch biomass 1.6 ton ha^(-1), and leaf biomass 0.7 ton ha^(-1). Moreover, the unbalanced age distribution of culms indicated that the activity of cutting old culms should be carried out to increase the productivity of giant bamboo forest.

關鍵字

巨竹 ； 林分結構 ； 生物量

並列摘要

This paper reports the stand structure and biomass on giant bamboo forest in Lien-Hua-Chih Area at the period of 2012 and 2013. The results resulted showed that the bamboo forest was dominated by culms with age over 4 years at both 2012 and 2013, and the culms at DBH between 14 and 16 cm were most abundant in diameter distribution. The average of clump size was 4.5 m^2 clump^(-1), and 400 clumps ha^(-1) was in average which covers 17.8 % of total bamboo land. The culms density was 4,433, 4,867 culms ha-1 at 2012 and 2013, respectively. At 2012, the average of DBH, total height and the height to crown base was 14.3 cm, 17.5 m and 7.2 m, respectively, and 14.3 cm, 17.5 m and 7.2 m at 2013. In the biomass above ground, at 2012, the total biomass was 155.1 ton ha^(-1) with the components that culms biomass was 129.0 ton ha^(-1), branch biomass 17.6 ton ha^(-1), and leaf biomass 8.5 ton ha^(-1). The same figures at 2012 was 155.8 ton ha^(-1) in total biomass, 129.8 ton ha^(-1) in culms biomass, 16.7 ton ha^(-1) in branch biomass and 7.7 ton ha^(-1) in leaf biomass. In regard to new culms, the average of new culms was 433.3 culms ha^(-1) with the average of DBH 15.4 cm, average of total height 19.6 m, the average of height to crown base 19.0 m. The average ratio of new culms was about 9.8 %. Finally, the total biomass above ground for new culms was 10.9~20.9 ton ha^(-1), with the components that culms biomass was 12.9 ton ha^(-1), branch biomass 1.6 ton ha^(-1), and leaf biomass 0.7 ton ha^(-1). Moreover, the unbalanced age distribution of culms indicated that the activity of cutting old culms should be carried out to increase the productivity of giant bamboo forest.

並列關鍵字

giant bamboo ； stand structure ； biomass