Struktur, Komposisi Tegakan dan Riap Tanaman Shorea parvifolia Dyer. pada Areal Bekas Tebangan dengan Sistem Silvikultur Tebang Pilih Tanam Indonesia Intensif

Abstract

Application of intensive indonesian selective cutting and planting of silviculture system (TPTII) is expected to cause significant changes in the structure and composition of the stand. This relates to the diameter limit of trees felled and the commercial opening of 3 meter wide planting. This study aims to determine the changes in structure and composition of stands in TPTII system and to determine the value increment of plants planted Shorea parvifolia in line with TPTII Silviculture System. This research was held in IUPHHK Erna Djuliawati company area, Centre of Kalimantan which observed the vegetation succession in two different conditions of forest (LOA one and LOA two year). The analysis of vegetation was held with nested sampling technique on the two year forest after logging and striping (Et+2) at three of slope levels. diameter and height of retrieving data Shorea parvifolia plants growing on the path to know the value their increment. The results showed that the composition of the forest after logging has decreased at all levels of vegetation (seedlings, saplings, poles and trees). This is because the forest after harvesting is not fixed and a logged forest in 2006 and 2007. Shannon-Wiener species diversity (H ') in the LOA TPTII 2 (two) years ranged from 2.49 to 3.75 with a medium-high level of diversity. Stand structure on the LOA TPTII 2 (two) years are still indicating the characteristics of natural forest stand structure normal to the inverted J shape curve. Although the number of trees / ha decreased in each diameter class, but the availability of the tree is still quite pretty. Community Similarity Index (IS) between the primary forest with LOA TPTII 2 (two) only 58.03%, so it can be said to be the secondary succession process is still ongoing and not yet reached the climax stage. From the data on diameter growth of Shorea parvifolia can per year was 1.67 cm, while the high growth ranged from 175.32 cm per year. Having done a statistical test can be seen that the slope significantly affect the growth of seedlings in the LOA TPTII 2 (two) years.