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Silvicultural practice and growth of the jabon tree(Anthocephalus cadamba Miq.) in community forests of West Java, Indonesia KCI 등재
- 언어ENG
- URLhttps://db.koreascholar.com/Article/Detail/306398
pp.81-93
Jabon tree(Anthocephalus cadamba Miq.) is a native and fast growing species in Indonesia that is preferred by the local community because of its good adaptability and economic profitability. However, information on this tree and its appropriate silvicultural practices are still lacking. Therefore, the aims of this study were to (1) document the existing silvicultural practices used by local communities, (2) investigate tree growth performance among different sites, and (3) examine the linkage between silvicultural practices and soil fertility and their effects on stand quality in West Java. The results obtained from interviews indicated that most of the jabon plantations are owned by outsiders from Jakarta or other cities. In addition, there are three types of management: partnership, hiring employees and direct management. There are only a few practitioners with silvicultural training; however, all practitioners have implemented basic silvicultural practices. Jabon plantations in West Java were inventoried and 53 plots were established across 19 sites. This species was introduced into Java in 2008; therefore, tree age ranges from 0.5 to 3.5years. The mean diameter ranges from 2.45 to 14.57cm with a maximum of 29.3cm, and the mean height ranges from 1.29 to 12.62m with a maximum of 18.68m in Situgede. Regression modeling was performed using dominant height, and the Chapman model was selected to generate a site index curve: Hd=10.6982(1-exp(-0.8915t))1.3078, with an R2 value of 0.6513. This model divided the 19sites into three categories, i.e., good, medium and poor. Based on these results, there are 2 good, 11 medium and 6 poor sites. Three DBH-age equations were generated based on site classification. A comparison between good and poor sites suggests that site conditions and soil fertility have more significant effects on the growth of jabon than silvicultural practices such as fertilization and site maintenance.
