RIAP DIAMETER TANAMAN MERANTI PADA SISTEM SILVIKULTUR TEBANG PILIH TANAM INDONESIA (TPTI) DAN TEBANG PILIH TANAM JALUR (TPTJ) DI AREAL IUPHHK-HA PT. SUKA JAYA MAKMUR KABUPATEN KETAPANG KALIMANTAN BARAT
ABSTRACT: Area of IUPHHK-HA
PT. Suka Jaya Makmur has planted three types of Shorea (Shorealeprosula, Shorea
parvifolia, and Shorea johoriensis) at silvicultural system TPTI andTPTJ. The
present study aimed at identifying the diameter increment of Shorealeprosula,
Shorea parvifolia, and Shorea johoriensis which were planted by usingsilvicultural
system of Indonesian Selective Logging and Plantation (TPTI) and Selective
Logging and Line Planting (TPTJ). Data collection was done through atechnique
called purposive sampling. Results of the discussion showed that the diameter increment
of Shorea leprosula was bigger than two other types of Shorea i.e. Shoreaparvifolia
and Shorea johoriensis. The analysis also revealed that there was adifference
of the diameter increment between silvicultural system of TPTI and TPTJ. The
diameter of TPTJ increased faster i.e. 3.46 cm/year in comparison with TPTI
whichwas only 1.02 cm/year.
Keywords: diameter increment,
silvicultural system TPTI and TPTJ, three types of Shorea
Penulis: Widiya Octa Selfiany,
Abdurrani Muin, Iskandar
Kode Jurnal: jpkehutanandd170044
