Abstract
Growth modeling and yield simulation of forest is a very important aspect in forest management including community forests. Stand growth model is an abstraction of the dynamic nature of a forest stand, including growth, ingrowths, mortality, and other changes in the structure and composition of the stand. In forest management, growth estimation plays an important role in supporting the sustainability of the benefits value of the community forests. The objectives of the research were to find out the stand growth model and the potential of community's pine forest. The study was conducted at the location of the community pine forests in District Mengkendek Tana Toraja Regency. Sample location, as representative of stand age classes that distribute on some villages in Mengkendek District, were selected by purposive sampling.The study results indicate that the most suitable model for upper trees mean height (H) is Weibull Model, for growth diameter and growth volume is Logistic Model . The stand mean height (h) can be presented as a function of H and Relative Spacing Ratio (Sr) on the basis of function log Sr = 0,197 – 0,653 log H, then the tree volume, can be estimated on the basis of function log V = -1,70 + 0,94logD + 1,50logh, and then the growth function of volume on the basis of function V = 1.008 / 1 + 251.322 exp(-0.373t. Further, the maximum value of stand Annual Increment was 18 m3ha-1year-1, attained at the age of 20 years.
Highlights
Community forest is a forest located on a land not owned by the government, it is owned by public (Hendarto 2003)
Whereas, according to Act No 41/1999 on Forestry Section 5 Article 1(b), the term private forest is replaced by right forest which is in its explanation section called community forest
This study was aimed to establish a model for pine (Pinus merkusii Jungh. et de Vriese) stand growth in community forest of the Tana Toraja Regency
Summary
Community forest is a forest located on a land not owned by the government, it is owned by public (Hendarto 2003). According to Act No 5/1967 on Forestry Principal Provisions, community forest is considered as private forest growing or planted on alienated land, usually called community forest and can be owned by an individual or shared by some people or corporations. Forests planted with own initiative on land charged by other right, are considered as the forests owned by the respective people/corporations. Whereas, according to Act No 41/1999 on Forestry (the substitute for Act No 5/1967) Section 5 Article 1(b), the term private forest is replaced by right forest which is in its explanation section called community forest. In Tana Toraja, pine trees have been planted since the late 1960s. In attempt to utilize the pine trees in Tana Toraja Regency, the governor of South Sulawesi in 1994 had issued a Decree No 71/II/1994 dated
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