Indrawan, Andry, Indonesia

  • Jurnal Manajemen Hutan Tropika Vol. 9 No. 2 (2003) - Articles

    The study discribes a system model of natural forest on logged over areas under selective cutting and planting system. The study departs from a fact that disturbance of forest from logging activity will affect the equilibrium of forest ecosystem including the forest stand composition. The study was performed in the forest concession area of PT. Inhutani II, Pulau Laut South Kalimantan. From the simulation results derived based upon permanent plot data, it was found that respond of logged over natural forest management system revealed that cutting cycle I after logging requires approximately 24 years, where cutting cycle II requires approximately 37 years. This expresses that cutting cycles are not consist and will change in line with the composition and structure of logged over natural forest as will as their development.

     


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  • Jurnal Manajemen Hutan Tropika Vol. 8 No. 2 (2002) - Articles
    Penerapan Sistem Silvikultur Tebang Pilih Tanam Indonesia (TPTI) Pada Hutan Dipterocarpaceae, Hutan Hujan Dataran Rendah di HPH PT. Hugurya, Aceh (Implementation of Sylvicultural System of Indonesian Selective Cutting and Planting in Dipterocarps Lowland
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  • Jurnal Manajemen Hutan Tropika Vol. 12 No. 3 (2006) - Articles
    Analisis Kebijakan Pengelolaan Sumberdaya Lahan pada Cagar Alam Pegunungan Cycloop (Analysis of Land Management Policy Resources at Preserve Cycloop Mountain)
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  • Jurnal Manajemen Hutan Tropika Vol. 10 No. 2 (2004) - Articles
    Prediksi Kebutuhan Hutan Kota Berbasis Oksigen di Kota Padang, Sumatera Barat (Predicting Oxygen-base Urban Forest Needs in Padang City, West Sumatera)
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  • Jurnal Manajemen Hutan Tropika Vol. 9 No. 2 (2003) - Articles

    Lowland Tropical Rain Forest in Forest concession (HPH) PT. Inhutani II, Stagen Pulau Laut, South Kalimantan, and in forest concession PT. Ratah Timber Co, are climax forest under dynamic equilibrium, which are dominated by tree species from Dipterocarps family. Mechanical logging which is conducted in forest concession area will result in the formation of forest with certain composition and structure. Recovery of the forest is left to proceed naturally and will take a certain amount of time, and will affect the next duration of rotation. From the simulation result which were made on the basis of data from permanen plot in area of PT. Inhutani II, it was found that respond of simulation or respond of logged over natural forest management system in permanen plot, revealed that cutting cycle I after logging require ± 24 years time, whereas cutting cycle II require ± 37 years time. Model obtained from simulation result which were made on the basis of data obtained from permanen plot in area of PT. Inhutani II, is used for data which were obtained from non permanen plot at forest concession area of PT. Ratah Timber Co. Respon of simulation from forest concession of PT. Ratah Timber Co reveal that cutting cycle I after logging require ± 30 years time, whereas cutting cycle II require ± 43 years of time. This Phenomena imply that cutting cycles, are not always constant and will change in line with the composition and structure of logged over natural forest and their development with time.

     


    Abstract  PDF